math tracker: space before the skipped count

Schema math (parts, chapters, sections, activity), seeded with all 100 chapters
(Ch 0-94, appendix A-E), 647 sections, PDF pages, exercise counts and approximate
prereqs. Triggers stamp started_at/completed_at and log status/exercise/note/section
changes; math.apply_progress(jsonb) applies the JSON format bots send. Private by
default via MATH_PRIVATE in #lib/math (owner-only prefix + lock in every tracker list).
Overall + per-part progress, current chapter, prereq hints, quick status buttons,
exercises stepper, notes, optional section ticks, activity log, dependency chart.
Deploy preflight checks the math schema (4 tables, 100 chapters).

drizzle.config.ts

@@ -35,7 +35,8 @@ export default defineConfig({
 		'ai',
 		'movies',
 		'worldtodo',
-		'notes'
+		'notes',
+		'math'
 	],
 	migrations: { schema: 'drizzle', table: '__drizzle_migrations' },
 	verbose: true,

drizzle/20261026082438_worldtodo_map/migration.sql

@@ -0,0 +1,32 @@
+CREATE TYPE "worldtodo"."location_precision" AS ENUM('exact', 'approximate', 'none');--> statement-breakpoint
+ALTER TABLE "worldtodo"."tasks" ADD COLUMN "location_precision" "worldtodo"."location_precision";--> statement-breakpoint
+-- Hand-written: location_precision follows scale and lat/lon (map pins, tracker #4641).
+-- street/city = exact, region/country = approximate (rough centre), planet or no coordinates
+-- = none. A trigger instead of a generated column so drizzle-kit can diff the enum column.
+CREATE OR REPLACE FUNCTION worldtodo.set_location_precision() RETURNS trigger
+LANGUAGE plpgsql AS $$
+BEGIN
+  NEW.location_precision := CASE
+    WHEN NEW.lat IS NULL OR NEW.lon IS NULL OR NEW.scale = 'planet' THEN 'none'
+    WHEN NEW.scale IN ('street', 'city') THEN 'exact'
+    ELSE 'approximate'
+  END::worldtodo.location_precision;
+  RETURN NEW;
+END $$;
+--> statement-breakpoint
+DROP TRIGGER IF EXISTS tasks_location_precision ON worldtodo.tasks;
+--> statement-breakpoint
+CREATE TRIGGER tasks_location_precision BEFORE INSERT OR UPDATE OF scale, lat, lon, location_precision
+  ON worldtodo.tasks FOR EACH ROW EXECUTE FUNCTION worldtodo.set_location_precision();
+--> statement-breakpoint
+-- Backfill (the trigger computes it) without bumping updated_at: touch_updated_at is paused
+-- for this one statement when it exists.
+DO $$
+DECLARE has_touch boolean := EXISTS (
+  SELECT 1 FROM pg_trigger WHERE tgrelid = 'worldtodo.tasks'::regclass AND tgname = 'touch_updated_at'
+);
+BEGIN
+  IF has_touch THEN ALTER TABLE worldtodo.tasks DISABLE TRIGGER touch_updated_at; END IF;
+  UPDATE worldtodo.tasks SET location_precision = NULL;
+  IF has_touch THEN ALTER TABLE worldtodo.tasks ENABLE TRIGGER touch_updated_at; END IF;
+END $$;

drizzle/20261026084751_cs_catalog/migration.sql

@@ -0,0 +1,101 @@
+CREATE TABLE "cs"."daily_prices" (
+	"item_id" integer,
+	"stream_id" smallint,
+	"day" date,
+	"price_cents" integer NOT NULL,
+	"volume" integer,
+	CONSTRAINT "daily_prices_pkey" PRIMARY KEY("item_id","stream_id","day")
+);
+--> statement-breakpoint
+CREATE TABLE "cs"."fx_rates" (
+	"day" date PRIMARY KEY,
+	"usd_eur" numeric(12,8) NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "cs"."price_windows" (
+	"item_id" integer,
+	"source" text,
+	"currency" text NOT NULL,
+	"span" text,
+	"median_cents" integer,
+	"avg_cents" integer,
+	"min_cents" integer,
+	"max_cents" integer,
+	"volume" integer,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "price_windows_pkey" PRIMARY KEY("item_id","source","span")
+);
+--> statement-breakpoint
+CREATE TABLE "cs"."skins" (
+	"id" text PRIMARY KEY,
+	"slug" text NOT NULL,
+	"name" text NOT NULL,
+	"kind" text NOT NULL,
+	"weapon" text,
+	"pattern" text,
+	"category" text,
+	"rarity" text,
+	"rarity_color" text,
+	"image" text,
+	"min_float" real,
+	"max_float" real,
+	"collections" text[],
+	"source" text DEFAULT 'bymykel' NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+DROP INDEX "cs"."items_hash_idx";--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD COLUMN "skin_id" text;--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD COLUMN "phase" text;--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD COLUMN "wear" text;--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD COLUMN "stattrak" boolean DEFAULT false NOT NULL;--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD COLUMN "souvenir" boolean DEFAULT false NOT NULL;--> statement-breakpoint
+ALTER TABLE "cs"."price_streams" ADD COLUMN "id" smallint GENERATED BY DEFAULT AS IDENTITY (sequence name "cs"."price_streams_id_seq" INCREMENT BY 1 MINVALUE 1 MAXVALUE 32767 START WITH 1 CACHE 1);--> statement-breakpoint
+ALTER TABLE "cs"."price_streams" ADD COLUMN "label" text;--> statement-breakpoint
+ALTER TABLE "cs"."price_streams" ADD COLUMN "last_fetched_at" timestamp with time zone;--> statement-breakpoint
+ALTER TABLE "cs"."price_streams" ADD COLUMN "last_rows" integer;--> statement-breakpoint
+ALTER TABLE "cs"."price_streams" ADD COLUMN "last_error" text;--> statement-breakpoint
+CREATE INDEX "daily_prices_day_idx" ON "cs"."daily_prices" ("day","stream_id");--> statement-breakpoint
+CREATE UNIQUE INDEX "items_config_idx" ON "cs"."items" ("market_hash_name",coalesce("phase", ''));--> statement-breakpoint
+CREATE INDEX "items_skin_idx" ON "cs"."items" ("skin_id");--> statement-breakpoint
+CREATE UNIQUE INDEX "price_streams_id_idx" ON "cs"."price_streams" ("id");--> statement-breakpoint
+CREATE UNIQUE INDEX "skins_slug_idx" ON "cs"."skins" ("slug");--> statement-breakpoint
+CREATE INDEX "skins_name_idx" ON "cs"."skins" ("name");--> statement-breakpoint
+CREATE INDEX "skins_kind_idx" ON "cs"."skins" ("kind");--> statement-breakpoint
+ALTER TABLE "cs"."daily_prices" ADD CONSTRAINT "daily_prices_item_id_items_id_fkey" FOREIGN KEY ("item_id") REFERENCES "cs"."items"("id") ON DELETE CASCADE;--> statement-breakpoint
+ALTER TABLE "cs"."items" ADD CONSTRAINT "items_skin_id_skins_id_fkey" FOREIGN KEY ("skin_id") REFERENCES "cs"."skins"("id") ON DELETE SET NULL;--> statement-breakpoint
+ALTER TABLE "cs"."price_windows" ADD CONSTRAINT "price_windows_item_id_items_id_fkey" FOREIGN KEY ("item_id") REFERENCES "cs"."items"("id") ON DELETE CASCADE;--> statement-breakpoint
+-- Facets for the listings that already exist (the daily job keeps these up to date).
+UPDATE cs.items SET
+	stattrak = market_hash_name LIKE '%StatTrak™ %',
+	souvenir = market_hash_name LIKE 'Souvenir %',
+	wear = substring(market_hash_name from '\((Factory New|Minimal Wear|Field-Tested|Well-Worn|Battle-Scarred)\)$');
+--> statement-breakpoint
+-- Price streams the daily job writes (one row per config per stream per day).
+INSERT INTO cs.price_streams (source, currency, kind, label) VALUES
+	('skinport', 'EUR', 'lowest-listing', 'Skinport lowest listing'),
+	('skinport', 'EUR', 'sale-median-24h', 'Skinport sales, 24h median'),
+	('steam-market', 'USD', 'sale-avg', 'Steam Market average sale (24h, else 7d)'),
+	('csfloat', 'USD', 'lowest-listing', 'CSFloat lowest listing'),
+	('buff163', 'USD', 'lowest-listing', 'Buff163 lowest listing')
+ON CONFLICT (source, currency, kind) DO UPDATE SET label = EXCLUDED.label;
+--> statement-breakpoint
+UPDATE cs.price_streams SET label = 'Steam Market lowest listing'
+WHERE source = 'steam-market' AND currency = 'USD' AND kind = 'lowest-listing' AND label IS NULL;
+--> statement-breakpoint
+-- Backfill: the one Steam lowest-listing sweep from Sep 2026 becomes the first daily point.
+INSERT INTO cs.daily_prices (item_id, stream_id, day, price_cents, volume)
+SELECT DISTINCT ON (p.item_id, (p.observed_at AT TIME ZONE 'UTC')::date)
+	p.item_id, s.id, (p.observed_at AT TIME ZONE 'UTC')::date, p.price_cents, p.volume
+FROM cs.price_observations p
+JOIN cs.price_streams s ON s.source = p.source AND s.currency = p.currency AND s.kind = p.kind
+ORDER BY p.item_id, (p.observed_at AT TIME ZONE 'UTC')::date, p.observed_at DESC
+ON CONFLICT DO NOTHING;
+--> statement-breakpoint
+DO $$
+BEGIN
+  IF current_user = 'personal' AND EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'personal_app') THEN
+    GRANT SELECT, INSERT, UPDATE, DELETE ON cs.skins, cs.daily_prices, cs.price_windows, cs.fx_rates TO personal_app;
+    GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA cs TO personal_app;
+  END IF;
+END $$;

drizzle/20261026090557_ai_provider_setup/migration.sql

@@ -0,0 +1,51 @@
+CREATE TABLE "ai"."provider_setup_entries" (
+	"id" serial PRIMARY KEY,
+	"provider_id" integer NOT NULL,
+	"section" text NOT NULL,
+	"name" text NOT NULL,
+	"note" text,
+	"scope" text,
+	"link" text,
+	"body" text,
+	"sort_order" integer DEFAULT 0 NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "provider_setup_entries_section_check" CHECK ("section" IN ('connections','skills','instructions','plugins','routines','agents','plan','notes')),
+	CONSTRAINT "provider_setup_entries_scope_check" CHECK ("scope" IS NULL OR "scope" IN ('global','per-repo','app')),
+	CONSTRAINT "provider_setup_entries_name_check" CHECK (length(btrim("name")) > 0)
+);
+--> statement-breakpoint
+CREATE TABLE "ai"."provider_setup_providers" (
+	"id" serial PRIMARY KEY,
+	"name" text NOT NULL,
+	"products" text,
+	"color" text DEFAULT 'zinc' NOT NULL,
+	"sort_order" integer DEFAULT 0 NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "provider_setup_providers_name_check" CHECK (length(btrim("name")) > 0),
+	CONSTRAINT "provider_setup_providers_color_check" CHECK ("color" IN ('orange','green','blue','violet','pink','sky','amber','zinc'))
+);
+--> statement-breakpoint
+CREATE INDEX "provider_setup_entries_provider_idx" ON "ai"."provider_setup_entries" ("provider_id","section","sort_order");--> statement-breakpoint
+CREATE UNIQUE INDEX "provider_setup_providers_name_key" ON "ai"."provider_setup_providers" ("name");--> statement-breakpoint
+ALTER TABLE "ai"."provider_setup_entries" ADD CONSTRAINT "provider_setup_entries_JxI1C1Zk458j_fkey" FOREIGN KEY ("provider_id") REFERENCES "ai"."provider_setup_providers"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+--> statement-breakpoint
+-- Seed the provider cards (owner edits them on /trackers/ai/setup). Entries are added there.
+INSERT INTO "ai"."provider_setup_providers" ("name", "products", "color", "sort_order") VALUES
+	('Claude', 'claude.ai + Claude Code', 'orange', 10),
+	('ChatGPT', 'ChatGPT + Codex', 'green', 20),
+	('Gemini', 'Gemini + Gemini CLI', 'blue', 30),
+	('Grok', 'Grok + Grok Bot', 'violet', 40),
+	('Copilot', 'GitHub Copilot', 'sky', 50)
+ON CONFLICT DO NOTHING;
+--> statement-breakpoint
+-- Same privacy as the rest of schema ai: app role only (default privileges already cover new
+-- tables; granted explicitly too). Grants only run on prod (migrations as `personal`).
+DO $$
+BEGIN
+  IF current_user = 'personal' AND EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'personal_app') THEN
+    GRANT SELECT, INSERT, UPDATE, DELETE ON "ai"."provider_setup_providers", "ai"."provider_setup_entries" TO personal_app;
+    GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA ai TO personal_app;
+  END IF;
+END $$;

drizzle/20261026091249_cs_history/migration.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "cs"."history_fetches" (
+	"item_id" integer,
+	"source" text,
+	"fetched_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"points" integer DEFAULT 0 NOT NULL,
+	"first_day" date,
+	"error" text,
+	CONSTRAINT "history_fetches_pkey" PRIMARY KEY("item_id","source")
+);
+--> statement-breakpoint
+ALTER TABLE "cs"."history_fetches" ADD CONSTRAINT "history_fetches_item_id_items_id_fkey" FOREIGN KEY ("item_id") REFERENCES "cs"."items"("id") ON DELETE CASCADE;

drizzle/20261026104832_math/migration.sql

@@ -0,0 +1,983 @@
+CREATE SCHEMA "math";
+--> statement-breakpoint
+CREATE TABLE "math"."activity" (
+	"id" serial PRIMARY KEY,
+	"chapter_id" integer NOT NULL,
+	"section_id" integer,
+	"kind" text NOT NULL,
+	"from_value" text,
+	"to_value" text,
+	"delta" integer,
+	"source" text DEFAULT 'sql' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "activity_kind_check" CHECK ("kind" IN ('status','exercises','note','section'))
+);
+--> statement-breakpoint
+CREATE TABLE "math"."chapters" (
+	"id" serial PRIMARY KEY,
+	"key" text NOT NULL,
+	"part_id" integer NOT NULL,
+	"title" text NOT NULL,
+	"page_start" integer NOT NULL,
+	"page_end" integer NOT NULL,
+	"exercise_count" integer,
+	"prereqs" text[] DEFAULT '{}'::text[] NOT NULL,
+	"status" text DEFAULT 'not_started' NOT NULL,
+	"exercises_done" integer DEFAULT 0 NOT NULL,
+	"notes" text,
+	"started_at" timestamp with time zone,
+	"completed_at" timestamp with time zone,
+	"sort_order" integer NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "chapters_status_check" CHECK ("status" IN ('not_started','reading','exercises','done','skipped')),
+	CONSTRAINT "chapters_exercises_done_check" CHECK ("exercises_done" >= 0)
+);
+--> statement-breakpoint
+CREATE TABLE "math"."parts" (
+	"id" serial PRIMARY KEY,
+	"key" text NOT NULL,
+	"num" integer,
+	"title" text NOT NULL,
+	"sort_order" integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "math"."sections" (
+	"id" serial PRIMARY KEY,
+	"chapter_id" integer NOT NULL,
+	"key" text NOT NULL,
+	"title" text NOT NULL,
+	"sort_order" integer NOT NULL,
+	"done_at" timestamp with time zone
+);
+--> statement-breakpoint
+CREATE INDEX "activity_created_idx" ON "math"."activity" ("created_at");--> statement-breakpoint
+CREATE INDEX "activity_chapter_idx" ON "math"."activity" ("chapter_id","created_at");--> statement-breakpoint
+CREATE UNIQUE INDEX "chapters_key_key" ON "math"."chapters" ("key");--> statement-breakpoint
+CREATE INDEX "chapters_part_idx" ON "math"."chapters" ("part_id","sort_order");--> statement-breakpoint
+CREATE UNIQUE INDEX "parts_key_key" ON "math"."parts" ("key");--> statement-breakpoint
+CREATE UNIQUE INDEX "sections_chapter_key_key" ON "math"."sections" ("chapter_id","key");--> statement-breakpoint
+ALTER TABLE "math"."activity" ADD CONSTRAINT "activity_chapter_id_chapters_id_fkey" FOREIGN KEY ("chapter_id") REFERENCES "math"."chapters"("id") ON DELETE CASCADE ON UPDATE CASCADE;--> statement-breakpoint
+ALTER TABLE "math"."activity" ADD CONSTRAINT "activity_section_id_sections_id_fkey" FOREIGN KEY ("section_id") REFERENCES "math"."sections"("id") ON DELETE SET NULL ON UPDATE CASCADE;--> statement-breakpoint
+ALTER TABLE "math"."chapters" ADD CONSTRAINT "chapters_part_id_parts_id_fkey" FOREIGN KEY ("part_id") REFERENCES "math"."parts"("id") ON DELETE CASCADE ON UPDATE CASCADE;--> statement-breakpoint
+ALTER TABLE "math"."sections" ADD CONSTRAINT "sections_chapter_id_chapters_id_fkey" FOREIGN KEY ("chapter_id") REFERENCES "math"."chapters"("id") ON DELETE CASCADE ON UPDATE CASCADE;--> statement-breakpoint
+-- Seed: the Napkin outline (parts, chapters with PDF page ranges, exercise counts and approximate
+-- prereqs, sections) from Terence Tao's extraction of the book (2026-10-26). Progress starts empty.
+INSERT INTO "math"."parts" ("key", "num", "title", "sort_order") VALUES
+	('1', 1, 'Starting Out', 1),
+	('2', 2, 'Basic Abstract Algebra', 2),
+	('3', 3, 'Basic Topology', 3),
+	('4', 4, 'Linear Algebra', 4),
+	('5', 5, 'More on Groups', 5),
+	('6', 6, 'Representation Theory', 6),
+	('7', 7, 'Quantum Algorithms', 7),
+	('8', 8, 'Calculus 101', 8),
+	('9', 9, 'Complex Analysis', 9),
+	('10', 10, 'Measure Theory', 10),
+	('11', 11, 'Probability (TO DO)', 11),
+	('12', 12, 'Differential Geometry', 12),
+	('13', 13, 'Riemann Surfaces', 13),
+	('14', 14, 'Algebraic NT I: Rings of Integers', 14),
+	('15', 15, 'Algebraic NT II: Galois and Ramification Theory', 15),
+	('16', 16, 'Algebraic Topology I: Homotopy', 16),
+	('17', 17, 'Category Theory', 17),
+	('18', 18, 'Algebraic Topology II: Homology', 18),
+	('19', 19, 'Algebraic Geometry I: Classical Varieties', 19),
+	('20', 20, 'Algebraic Geometry II: Affine Schemes', 20),
+	('21', 21, 'Set Theory I: ZFC, Ordinals, and Cardinals', 21),
+	('22', 22, 'Set Theory II: Model Theory and Forcing', 22),
+	('appendix', NULL, 'Appendix', 23);
+--> statement-breakpoint
+INSERT INTO "math"."chapters" ("key", "part_id", "title", "page_start", "page_end", "exercise_count", "prereqs", "sort_order") VALUES
+	('0', (SELECT id FROM "math"."parts" WHERE key = '1'), 'Sales pitches', 37, 42, NULL, '{}'::text[], 1),
+	('1', (SELECT id FROM "math"."parts" WHERE key = '1'), 'Groups', 43, 54, 9, '{}'::text[], 2),
+	('2', (SELECT id FROM "math"."parts" WHERE key = '1'), 'Metric spaces', 55, 68, 6, '{}'::text[], 3),
+	('3', (SELECT id FROM "math"."parts" WHERE key = '2'), 'Homomorphisms and quotient groups', 69, 80, 8, '{}'::text[], 4),
+	('4', (SELECT id FROM "math"."parts" WHERE key = '2'), 'Rings and ideals', 81, 92, 8, '{}'::text[], 5),
+	('5', (SELECT id FROM "math"."parts" WHERE key = '2'), 'Flavors of rings', 93, 108, 9, '{}'::text[], 6),
+	('6', (SELECT id FROM "math"."parts" WHERE key = '3'), 'Properties of metric spaces', 109, 114, 5, '{}'::text[], 7),
+	('7', (SELECT id FROM "math"."parts" WHERE key = '3'), 'Topological spaces', 115, 124, 8, '{}'::text[], 8),
+	('8', (SELECT id FROM "math"."parts" WHERE key = '3'), 'Compactness', 125, 138, 9, '{}'::text[], 9),
+	('9', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Vector spaces', 139, 156, 9, '{1,3,4,5}'::text[], 10),
+	('10', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Eigen-things', 157, 166, 7, '{1,3,4,5}'::text[], 11),
+	('11', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Dual space and trace', 167, 174, 4, '{1,3,4,5}'::text[], 12),
+	('12', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Determinant', 175, 182, 8, '{1,3,4,5}'::text[], 13),
+	('13', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Inner product spaces', 183, 190, 8, '{1,3,4,5}'::text[], 14),
+	('14', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Bonus: Fourier analysis', 191, 200, 2, '{1,3,4,5}'::text[], 15),
+	('15', (SELECT id FROM "math"."parts" WHERE key = '4'), 'Duals, adjoint, and transposes', 201, 212, 8, '{1,3,4,5}'::text[], 16),
+	('16', (SELECT id FROM "math"."parts" WHERE key = '5'), 'Group actions overkill AIME problems', 213, 218, 5, '{1,3,4,5}'::text[], 17),
+	('17', (SELECT id FROM "math"."parts" WHERE key = '5'), 'Find all groups', 219, 224, 5, '{16}'::text[], 18),
+	('18', (SELECT id FROM "math"."parts" WHERE key = '5'), 'The PID structure theorem', 225, 236, 5, '{1,3,4,5}'::text[], 19),
+	('19', (SELECT id FROM "math"."parts" WHERE key = '6'), 'Representations of algebras', 237, 248, 5, '{9,10,11,12,13,14,15,18}'::text[], 20),
+	('20', (SELECT id FROM "math"."parts" WHERE key = '6'), 'Semisimple algebras', 249, 256, 5, '{9,10,11,12,13,14,15,18}'::text[], 21),
+	('21', (SELECT id FROM "math"."parts" WHERE key = '6'), 'Characters', 257, 264, 5, '{9,10,11,12,13,14,15,18}'::text[], 22),
+	('22', (SELECT id FROM "math"."parts" WHERE key = '6'), 'Some applications', 265, 270, NULL, '{9,10,11,12,13,14,15,18}'::text[], 23),
+	('23', (SELECT id FROM "math"."parts" WHERE key = '7'), 'Quantum states and measurements', 271, 278, 2, '{9,10,11,12,13,14,15,18}'::text[], 24),
+	('24', (SELECT id FROM "math"."parts" WHERE key = '7'), 'Quantum circuits', 279, 286, 4, '{9,10,11,12,13,14,15,18}'::text[], 25),
+	('25', (SELECT id FROM "math"."parts" WHERE key = '7'), 'Shor''s algorithm', 287, 294, NULL, '{9,10,11,12,13,14,15,18}'::text[], 26),
+	('26', (SELECT id FROM "math"."parts" WHERE key = '8'), 'Limits and series', 295, 306, 8, '{2,6,7,8}'::text[], 27),
+	('27', (SELECT id FROM "math"."parts" WHERE key = '8'), 'Bonus: A hint of p-adic numbers', 307, 318, 4, '{2,6,7,8}'::text[], 28),
+	('28', (SELECT id FROM "math"."parts" WHERE key = '8'), 'Differentiation', 319, 330, 7, '{2,6,7,8}'::text[], 29),
+	('29', (SELECT id FROM "math"."parts" WHERE key = '8'), 'Power series and Taylor series', 331, 338, 5, '{2,6,7,8}'::text[], 30),
+	('30', (SELECT id FROM "math"."parts" WHERE key = '8'), 'Riemann integrals', 339, 348, 4, '{2,6,7,8}'::text[], 31),
+	('31', (SELECT id FROM "math"."parts" WHERE key = '9'), 'Holomorphic functions', 349, 364, 6, '{26,27,28,29,30}'::text[], 32),
+	('32', (SELECT id FROM "math"."parts" WHERE key = '9'), 'Meromorphic functions', 365, 374, 5, '{26,27,28,29,30}'::text[], 33),
+	('33', (SELECT id FROM "math"."parts" WHERE key = '9'), 'Holomorphic square roots and logarithms', 375, 380, 2, '{26,27,28,29,30}'::text[], 34),
+	('34', (SELECT id FROM "math"."parts" WHERE key = '9'), 'Bonus: Topological Abel-Ruffini Theorem', 381, 386, 1, '{26,27,28,29,30}'::text[], 35),
+	('35', (SELECT id FROM "math"."parts" WHERE key = '10'), 'Measure spaces', 387, 394, 2, '{26,27,28,29,30}'::text[], 36),
+	('36', (SELECT id FROM "math"."parts" WHERE key = '10'), 'Constructing the Borel and Lebesgue measure', 395, 404, 3, '{26,27,28,29,30}'::text[], 37),
+	('37', (SELECT id FROM "math"."parts" WHERE key = '10'), 'Lebesgue integration', 405, 410, 2, '{26,27,28,29,30}'::text[], 38),
+	('38', (SELECT id FROM "math"."parts" WHERE key = '10'), 'Swapping order with Lebesgue integrals', 411, 418, NULL, '{26,27,28,29,30}'::text[], 39),
+	('39', (SELECT id FROM "math"."parts" WHERE key = '10'), 'Bonus: A hint of Pontryagin duality', 419, 426, 2, '{26,27,28,29,30}'::text[], 40),
+	('40', (SELECT id FROM "math"."parts" WHERE key = '11'), 'Random variables (TO DO)', 427, 428, 2, '{35,36,37,38,39}'::text[], 41),
+	('41', (SELECT id FROM "math"."parts" WHERE key = '11'), 'Large number laws (TO DO)', 429, 436, 2, '{35,36,37,38,39}'::text[], 42),
+	('42', (SELECT id FROM "math"."parts" WHERE key = '11'), 'Stopped martingales (TO DO)', 437, 452, 6, '{35,36,37,38,39}'::text[], 43),
+	('43', (SELECT id FROM "math"."parts" WHERE key = '12'), 'Multivariable calculus done correctly', 453, 460, 2, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 44),
+	('44', (SELECT id FROM "math"."parts" WHERE key = '12'), 'Differential forms', 461, 472, 2, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 45),
+	('45', (SELECT id FROM "math"."parts" WHERE key = '12'), 'Integrating differential forms', 473, 484, 7, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 46),
+	('46', (SELECT id FROM "math"."parts" WHERE key = '12'), 'A bit of manifolds', 485, 496, 1, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 47),
+	('47', (SELECT id FROM "math"."parts" WHERE key = '13'), 'Basic definitions of Riemann surfaces', 497, 504, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 48),
+	('48', (SELECT id FROM "math"."parts" WHERE key = '13'), 'Morphisms between Riemann surfaces', 505, 510, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 49),
+	('49', (SELECT id FROM "math"."parts" WHERE key = '13'), 'Affine and projective plane curves', 511, 520, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 50),
+	('50', (SELECT id FROM "math"."parts" WHERE key = '13'), 'Differential forms', 521, 524, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 51),
+	('51', (SELECT id FROM "math"."parts" WHERE key = '13'), 'The Riemann-Roch theorem', 525, 530, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 52),
+	('52', (SELECT id FROM "math"."parts" WHERE key = '13'), 'Line bundles', 531, 540, NULL, '{9,10,11,12,13,14,15,18,26,27,28,29,30}'::text[], 53),
+	('53', (SELECT id FROM "math"."parts" WHERE key = '14'), 'Algebraic integers', 541, 546, 9, '{9,10,11,12,13,14,15,18}'::text[], 54),
+	('54', (SELECT id FROM "math"."parts" WHERE key = '14'), 'The ring of integers', 547, 556, 6, '{9,10,11,12,13,14,15,18}'::text[], 55),
+	('55', (SELECT id FROM "math"."parts" WHERE key = '14'), 'Unique factorization (finally!)', 557, 568, 5, '{9,10,11,12,13,14,15,18}'::text[], 56),
+	('56', (SELECT id FROM "math"."parts" WHERE key = '14'), 'Minkowski bound and class groups', 569, 588, 6, '{9,10,11,12,13,14,15,18}'::text[], 57),
+	('57', (SELECT id FROM "math"."parts" WHERE key = '14'), 'More properties of the discriminant', 589, 590, 6, '{9,10,11,12,13,14,15,18}'::text[], 58),
+	('58', (SELECT id FROM "math"."parts" WHERE key = '14'), 'Bonus: Let''s solve Pell''s equation!', 591, 598, 2, '{9,10,11,12,13,14,15,18}'::text[], 59),
+	('59', (SELECT id FROM "math"."parts" WHERE key = '15'), 'Things Galois', 599, 610, 6, '{9,10,11,12,13,14,15,18}'::text[], 60),
+	('60', (SELECT id FROM "math"."parts" WHERE key = '15'), 'Finite fields', 611, 616, 1, '{53,54,55,56,57,58,59}'::text[], 61),
+	('61', (SELECT id FROM "math"."parts" WHERE key = '15'), 'Ramification theory', 617, 626, 1, '{53,54,55,56,57,58,59}'::text[], 62),
+	('62', (SELECT id FROM "math"."parts" WHERE key = '15'), 'The Frobenius element', 627, 638, 5, '{53,54,55,56,57,58,59}'::text[], 63),
+	('63', (SELECT id FROM "math"."parts" WHERE key = '15'), 'Bonus: A Bit on Artin Reciprocity', 639, 654, 3, '{53,54,55,56,57,58,59}'::text[], 64),
+	('64', (SELECT id FROM "math"."parts" WHERE key = '16'), 'Some topological constructions', 655, 666, 3, '{1,2,3,4,5,6,7,8}'::text[], 65),
+	('65', (SELECT id FROM "math"."parts" WHERE key = '16'), 'Fundamental groups', 667, 678, 4, '{1,2,3,4,5,6,7,8}'::text[], 66),
+	('66', (SELECT id FROM "math"."parts" WHERE key = '16'), 'Covering projections', 679, 692, NULL, '{1,2,3,4,5,6,7,8}'::text[], 67),
+	('67', (SELECT id FROM "math"."parts" WHERE key = '17'), 'Objects and morphisms', 693, 704, 4, '{1,3,4,5}'::text[], 68),
+	('68', (SELECT id FROM "math"."parts" WHERE key = '17'), 'Functors and natural transformations', 705, 716, 3, '{1,3,4,5}'::text[], 69),
+	('69', (SELECT id FROM "math"."parts" WHERE key = '17'), 'Limits in categories (TO DO)', 717, 718, 1, '{1,3,4,5}'::text[], 70),
+	('70', (SELECT id FROM "math"."parts" WHERE key = '17'), 'Abelian categories', 719, 728, 4, '{1,3,4,5}'::text[], 71),
+	('71', (SELECT id FROM "math"."parts" WHERE key = '18'), 'Singular homology', 729, 742, 2, '{64,65,66,67,68,69,70}'::text[], 72),
+	('72', (SELECT id FROM "math"."parts" WHERE key = '18'), 'The long exact sequence', 743, 754, 6, '{64,65,66,67,68,69,70}'::text[], 73),
+	('73', (SELECT id FROM "math"."parts" WHERE key = '18'), 'Excision and relative homology', 755, 762, 5, '{64,65,66,67,68,69,70}'::text[], 74),
+	('74', (SELECT id FROM "math"."parts" WHERE key = '18'), 'Bonus: Cellular homology', 763, 774, 5, '{64,65,66,67,68,69,70}'::text[], 75),
+	('75', (SELECT id FROM "math"."parts" WHERE key = '18'), 'Singular cohomology', 775, 786, 3, '{64,65,66,67,68,69,70}'::text[], 76),
+	('76', (SELECT id FROM "math"."parts" WHERE key = '18'), 'Application of cohomology', 787, 806, 4, '{64,65,66,67,68,69,70}'::text[], 77),
+	('77', (SELECT id FROM "math"."parts" WHERE key = '19'), 'Affine varieties', 807, 816, 3, '{1,3,4,5}'::text[], 78),
+	('78', (SELECT id FROM "math"."parts" WHERE key = '19'), 'Affine varieties as ringed spaces', 817, 826, 3, '{1,3,4,5}'::text[], 79),
+	('79', (SELECT id FROM "math"."parts" WHERE key = '19'), 'Projective varieties', 827, 834, NULL, '{1,3,4,5}'::text[], 80),
+	('80', (SELECT id FROM "math"."parts" WHERE key = '19'), 'Bonus: Bézout''s theorem', 835, 842, 2, '{1,3,4,5}'::text[], 81),
+	('81', (SELECT id FROM "math"."parts" WHERE key = '19'), 'Morphisms of varieties', 843, 854, 4, '{1,3,4,5}'::text[], 82),
+	('82', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Sheaves and ringed spaces', 855, 866, 4, '{67,68,69,70,77,78,79,80,81}'::text[], 83),
+	('83', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Localization', 867, 876, 4, '{67,68,69,70,77,78,79,80,81}'::text[], 84),
+	('84', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Affine schemes: the Zariski topology', 877, 886, 3, '{67,68,69,70,77,78,79,80,81}'::text[], 85),
+	('85', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Affine schemes: the sheaf', 887, 896, 5, '{67,68,69,70,77,78,79,80,81}'::text[], 86),
+	('86', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Interlude: eighteen examples of affine schemes', 897, 912, 4, '{67,68,69,70,77,78,79,80,81}'::text[], 87),
+	('87', (SELECT id FROM "math"."parts" WHERE key = '20'), 'Morphisms of locally ringed spaces', 913, 926, 2, '{67,68,69,70,77,78,79,80,81}'::text[], 88),
+	('88', (SELECT id FROM "math"."parts" WHERE key = '21'), 'Interlude: Cauchy''s functional equation and Zorn''s lemma', 927, 934, 3, '{}'::text[], 89),
+	('89', (SELECT id FROM "math"."parts" WHERE key = '21'), 'Zermelo-Fraenkel with choice', 935, 942, 5, '{}'::text[], 90),
+	('90', (SELECT id FROM "math"."parts" WHERE key = '21'), 'Ordinals', 943, 954, 3, '{}'::text[], 91),
+	('91', (SELECT id FROM "math"."parts" WHERE key = '21'), 'Cardinals', 955, 964, 4, '{}'::text[], 92),
+	('92', (SELECT id FROM "math"."parts" WHERE key = '22'), 'Inner model theory', 965, 976, 4, '{}'::text[], 93),
+	('93', (SELECT id FROM "math"."parts" WHERE key = '22'), 'Forcing', 977, 986, 2, '{}'::text[], 94),
+	('94', (SELECT id FROM "math"."parts" WHERE key = '22'), 'Breaking the continuum hypothesis', 987, 994, 1, '{}'::text[], 95),
+	('A', (SELECT id FROM "math"."parts" WHERE key = 'appendix'), 'Pedagogical comments and references', 995, 998, NULL, '{}'::text[], 96),
+	('B', (SELECT id FROM "math"."parts" WHERE key = 'appendix'), 'Hints to selected problems', 999, 1010, NULL, '{}'::text[], 97),
+	('C', (SELECT id FROM "math"."parts" WHERE key = 'appendix'), 'Sketches of selected solutions', 1011, 1038, NULL, '{}'::text[], 98),
+	('D', (SELECT id FROM "math"."parts" WHERE key = 'appendix'), 'Glossary of notations', 1039, 1048, NULL, '{}'::text[], 99),
+	('E', (SELECT id FROM "math"."parts" WHERE key = 'appendix'), 'Terminology on sets and functions', 1049, 1052, NULL, '{}'::text[], 100);
+--> statement-breakpoint
+INSERT INTO "math"."sections" ("chapter_id", "key", "title", "sort_order")
+SELECT c.id, v.key, v.title, v.ord FROM (VALUES
+	('0', '0.1', 'The basics', 1),
+	('0', '0.2', 'Abstract algebra', 2),
+	('0', '0.3', 'Real and complex analysis', 3),
+	('0', '0.4', 'Algebraic number theory', 4),
+	('0', '0.5', 'Algebraic topology', 5),
+	('0', '0.6', 'Algebraic geometry', 6),
+	('0', '0.7', 'Set theory', 7),
+	('1', '1.1', 'Definition and examples of groups', 1),
+	('1', '1.2', 'Properties of groups', 2),
+	('1', '1.3', 'Isomorphisms', 3),
+	('1', '1.4', 'Orders of groups, and Lagrange''s theorem', 4),
+	('1', '1.5', 'Subgroups', 5),
+	('1', '1.6', 'Groups of small orders', 6),
+	('1', '1.7', 'Unimportant long digression', 7),
+	('1', '1.8', 'A few harder problems to think about', 8),
+	('2', '2.1', 'Definition and examples of metric spaces', 1),
+	('2', '2.2', 'Convergence in metric spaces', 2),
+	('2', '2.3', 'Continuous maps', 3),
+	('2', '2.4', 'Homeomorphisms', 4),
+	('2', '2.5', 'Extended example/definition: product metric', 5),
+	('2', '2.6', 'Open sets', 6),
+	('2', '2.7', 'Closed sets', 7),
+	('2', '2.8', 'A few harder problems to think about', 8),
+	('3', '3.1', 'Generators and group presentations', 1),
+	('3', '3.2', 'Homomorphisms', 2),
+	('3', '3.3', 'Cosets and modding out', 3),
+	('3', '3.4', '(Optional) Proof of Lagrange''s theorem', 4),
+	('3', '3.5', 'Eliminating the homomorphism', 5),
+	('3', '3.6', '(Digression) The first isomorphism theorem', 6),
+	('3', '3.7', 'A few harder problems to think about', 7),
+	('4', '4.1', 'Some motivational metaphors about rings vs groups', 1),
+	('4', '4.2', '(Optional) Pedagogical notes on motivation', 2),
+	('4', '4.3', 'Definition and examples of rings', 3),
+	('4', '4.4', 'Fields', 4),
+	('4', '4.5', 'Homomorphisms', 5),
+	('4', '4.6', 'Ideals', 6),
+	('4', '4.7', 'Generating ideals', 7),
+	('4', '4.8', 'Principal ideal domains', 8),
+	('4', '4.9', 'Noetherian rings', 9),
+	('4', '4.10', 'A few harder problems to think about', 10),
+	('5', '5.1', 'Fields', 1),
+	('5', '5.2', 'Integral domains', 2),
+	('5', '5.3', 'Prime ideals', 3),
+	('5', '5.4', 'Maximal ideals', 4),
+	('5', '5.5', 'Field of fractions', 5),
+	('5', '5.6', 'Unique factorization domains (UFD''s)', 6),
+	('5', '5.7', 'Extra: Euclidean domains', 7),
+	('5', '5.8', 'A few harder problems to think about', 8),
+	('6', '6.1', 'Boundedness', 1),
+	('6', '6.2', 'Completeness', 2),
+	('6', '6.3', 'Let the buyer beware', 3),
+	('6', '6.4', 'Subspaces, and (inb4) a confusing linguistic point', 4),
+	('6', '6.5', 'A few harder problems to think about', 5),
+	('7', '7.1', 'Forgetting the metric', 1),
+	('7', '7.2', 'Re-definitions', 2),
+	('7', '7.3', 'Hausdorff spaces', 3),
+	('7', '7.4', 'Subspaces', 4),
+	('7', '7.5', 'Connected spaces', 5),
+	('7', '7.6', 'Path-connected spaces', 6),
+	('7', '7.7', 'Homotopy and simply connected spaces', 7),
+	('7', '7.8', 'Bases of spaces', 8),
+	('7', '7.9', 'A few harder problems to think about', 9),
+	('8', '8.1', 'Definition of sequential compactness', 1),
+	('8', '8.2', 'Criteria for compactness', 2),
+	('8', '8.3', 'Compactness using open covers', 3),
+	('8', '8.4', 'Applications of compactness', 4),
+	('8', '8.5', '(Optional) Equivalence of formulations of compactness', 5),
+	('8', '8.6', 'A few harder problems to think about', 6),
+	('9', '9.1', 'The definitions of a ring and field', 1),
+	('9', '9.2', 'Modules and vector spaces', 2),
+	('9', '9.3', 'Direct sums', 3),
+	('9', '9.4', 'Linear independence, spans, and basis', 4),
+	('9', '9.5', 'Linear maps', 5),
+	('9', '9.6', 'What is a matrix?', 6),
+	('9', '9.7', 'Subspaces and picking convenient bases', 7),
+	('9', '9.8', 'A cute application: Lagrange interpolation', 8),
+	('9', '9.9', 'Pedagogical digression: Arrays of numbers are evil', 9),
+	('9', '9.10', 'A word on general modules', 10),
+	('9', '9.11', 'A few harder problems to think about', 11),
+	('10', '10.1', 'Why you should care', 1),
+	('10', '10.2', 'Warning on assumptions', 2),
+	('10', '10.3', 'Eigenvectors and eigenvalues', 3),
+	('10', '10.4', 'The Jordan form', 4),
+	('10', '10.5', 'Nilpotent maps', 5),
+	('10', '10.6', 'Reducing to the nilpotent case', 6),
+	('10', '10.7', '(Optional) Proof of nilpotent Jordan', 7),
+	('10', '10.8', 'Algebraic and geometric multiplicity', 8),
+	('10', '10.9', 'A few harder problems to think about', 9),
+	('11', '11.1', 'Tensor product', 1),
+	('11', '11.2', 'Dual space', 2),
+	('11', '11.3', 'VW gives matrices from V to W', 3),
+	('11', '11.4', 'The trace', 4),
+	('11', '11.5', 'A few harder problems to think about', 5),
+	('12', '12.1', 'Wedge product', 1),
+	('12', '12.2', 'The determinant', 2),
+	('12', '12.3', 'Characteristic polynomials, and Cayley-Hamilton', 3),
+	('12', '12.4', 'A few harder problems to think about', 4),
+	('13', '13.1', 'The inner product', 1),
+	('13', '13.2', 'Norms', 2),
+	('13', '13.3', 'Orthogonality', 3),
+	('13', '13.4', 'Hilbert spaces', 4),
+	('13', '13.5', 'A few harder problems to think about', 5),
+	('14', '14.1', 'Synopsis', 1),
+	('14', '14.2', 'A reminder on Hilbert spaces', 2),
+	('14', '14.3', 'Common examples', 3),
+	('14', '14.4', 'Summary, and another teaser', 4),
+	('14', '14.5', 'Parseval and friends', 5),
+	('14', '14.6', 'Application: Basel problem', 6),
+	('14', '14.7', 'Application: Arrow''s Impossibility Theorem', 7),
+	('14', '14.8', 'A few harder problems to think about', 8),
+	('15', '15.1', 'Dual of a map', 1),
+	('15', '15.2', '(Optional) A cautionary tale on what goes wrong if you don''t have a natural isomorphism V .5-.5.5-.5.5-.5.5-.5V', 2),
+	('15', '15.3', 'Identifying with the dual space', 3),
+	('15', '15.4', 'The adjoint (conjugate transpose)', 4),
+	('15', '15.5', 'Eigenvalues of normal maps', 5),
+	('15', '15.6', 'A few harder problems to think about', 6),
+	('16', '16.1', 'Definition of a group action', 1),
+	('16', '16.2', 'Stabilizers and orbits', 2),
+	('16', '16.3', 'Burnside''s lemma', 3),
+	('16', '16.4', 'Conjugation of elements', 4),
+	('16', '16.5', 'A few harder problems to think about', 5),
+	('17', '17.1', 'Sylow theorems', 1),
+	('17', '17.2', '(Optional) Proving Sylow''s theorem', 2),
+	('17', '17.3', '(Optional) Simple groups and Jordan-Hölder', 3),
+	('17', '17.4', 'A few harder problems to think about', 4),
+	('18', '18.1', 'Finitely generated abelian groups', 1),
+	('18', '18.2', 'Some ring theory prerequisites', 2),
+	('18', '18.3', 'The structure theorem', 3),
+	('18', '18.4', 'Reduction to maps of free R-modules', 4),
+	('18', '18.5', 'Uniqueness of primary form', 5),
+	('18', '18.6', 'Smith normal form', 6),
+	('18', '18.7', 'A few harder problems to think about', 7),
+	('19', '19.1', 'Algebras', 1),
+	('19', '19.2', 'Representations', 2),
+	('19', '19.3', 'Direct sums', 3),
+	('19', '19.4', 'Irreducible and indecomposable representations', 4),
+	('19', '19.5', 'Morphisms of representations', 5),
+	('19', '19.6', 'The representations of Matd(k)', 6),
+	('19', '19.7', 'A few harder problems to think about', 7),
+	('20', '20.1', 'Schur''s lemma continued', 1),
+	('20', '20.2', 'Density theorem', 2),
+	('20', '20.3', 'Semisimple algebras', 3),
+	('20', '20.4', 'Maschke''s theorem', 4),
+	('20', '20.5', 'Example: the representations of C[S3]', 5),
+	('20', '20.6', 'A few harder problems to think about', 6),
+	('21', '21.1', 'Definitions', 1),
+	('21', '21.2', 'The dual space modulo the commutator', 2),
+	('21', '21.3', 'Orthogonality of characters', 3),
+	('21', '21.4', 'Examples of character tables', 4),
+	('21', '21.5', 'A few harder problems to think about', 5),
+	('22', '22.1', 'Frobenius divisibility', 1),
+	('22', '22.2', 'Burnside''s theorem', 2),
+	('22', '22.3', 'Frobenius determinant', 3),
+	('23', '23.1', 'Bra-ket notation', 1),
+	('23', '23.2', 'The state space', 2),
+	('23', '23.3', 'Observations', 3),
+	('23', '23.4', 'Entanglement', 4),
+	('23', '23.5', 'A few harder problems to think about', 5),
+	('24', '24.1', 'Classical logic gates', 1),
+	('24', '24.2', 'Reversible classical logic', 2),
+	('24', '24.3', 'Quantum logic gates', 3),
+	('24', '24.4', 'Deutsch-Jozsa algorithm', 4),
+	('24', '24.5', 'A few harder problems to think about', 5),
+	('25', '25.1', 'The classical (inverse) Fourier transform', 1),
+	('25', '25.2', 'The quantum Fourier transform', 2),
+	('25', '25.3', 'Shor''s algorithm', 3),
+	('26', '26.1', 'Completeness and inf/sup', 1),
+	('26', '26.2', 'Proofs of the two key completeness properties of R', 2),
+	('26', '26.3', 'Monotonic sequences', 3),
+	('26', '26.4', 'Infinite series', 4),
+	('26', '26.5', 'Series addition is not commutative: a horror story', 5),
+	('26', '26.6', 'Limits of functions at points', 6),
+	('26', '26.7', 'Limits of functions at infinity', 7),
+	('26', '26.8', 'A few harder problems to think about', 8),
+	('27', '27.1', 'Motivation', 1),
+	('27', '27.2', 'Algebraic perspective', 2),
+	('27', '27.3', 'Analytic perspective', 3),
+	('27', '27.4', 'Mahler coefficients', 4),
+	('27', '27.5', 'A few harder problems to think about', 5),
+	('28', '28.1', 'Definition', 1),
+	('28', '28.2', 'How to compute them', 2),
+	('28', '28.3', 'Local (and global) maximums', 3),
+	('28', '28.4', 'Rolle and friends', 4),
+	('28', '28.5', 'Smooth functions', 5),
+	('28', '28.6', 'A few harder problems to think about', 6),
+	('29', '29.1', 'Motivation', 1),
+	('29', '29.2', 'Power series', 2),
+	('29', '29.3', 'Differentiating them', 3),
+	('29', '29.4', 'Analytic functions', 4),
+	('29', '29.5', 'A definition of Euler''s constant and exponentiation', 5),
+	('29', '29.6', 'This all works over complex numbers as well, except also complex analysis is heaven', 6),
+	('29', '29.7', 'A few harder problems to think about', 7),
+	('30', '30.1', 'Uniform continuity', 1),
+	('30', '30.2', 'Dense sets and extension', 2),
+	('30', '30.3', 'Defining the Riemann integral', 3),
+	('30', '30.4', 'Meshes', 4),
+	('30', '30.5', 'A few harder problems to think about', 5),
+	('31', '31.1', 'The nicest functions on earth', 1),
+	('31', '31.2', 'Complex differentiation', 2),
+	('31', '31.3', 'Contour integrals', 3),
+	('31', '31.4', 'Cauchy-Goursat theorem', 4),
+	('31', '31.5', 'Cauchy''s integral theorem', 5),
+	('31', '31.6', 'Holomorphic functions are analytic', 6),
+	('31', '31.7', 'Optional: Proof that holomorphic functions are analytic', 7),
+	('31', '31.8', 'A few harder problems to think about', 8),
+	('32', '32.1', 'The second nicest functions on earth', 1),
+	('32', '32.2', 'Meromorphic functions', 2),
+	('32', '32.3', 'Winding numbers and the residue theorem', 3),
+	('32', '32.4', 'Argument principle', 4),
+	('32', '32.5', 'Digression: the Argument Principle viewed geometrically', 5),
+	('32', '32.6', 'Philosophy: why are holomorphic functions so nice?', 6),
+	('32', '32.7', 'A few harder problems to think about', 7),
+	('33', '33.1', 'Motivation: square root of a complex number', 1),
+	('33', '33.2', 'Square roots of holomorphic functions', 2),
+	('33', '33.3', 'Covering projections', 3),
+	('33', '33.4', 'Complex logarithms', 4),
+	('33', '33.5', 'Some special cases', 5),
+	('33', '33.6', 'A few harder problems to think about', 6),
+	('34', '34.1', 'The Game Plan', 1),
+	('34', '34.2', 'Step 1: The Simplest Case', 2),
+	('34', '34.3', 'Step 2: Nested Roots', 3),
+	('34', '34.4', 'Step 3: Normal Groups', 4),
+	('34', '34.5', 'Summary', 5),
+	('34', '34.6', 'A few harder problems to think about', 6),
+	('35', '35.1', 'Letter connotations', 1),
+	('35', '35.2', 'Motivating measure spaces via random variables', 2),
+	('35', '35.3', 'Motivating measure spaces geometrically', 3),
+	('35', '35.4', 'σ-algebras and measurable spaces', 4),
+	('35', '35.5', 'Measure spaces', 5),
+	('35', '35.6', 'A hint of Banach-Tarski', 6),
+	('35', '35.7', 'Measurable functions', 7),
+	('35', '35.8', 'On the word ``almost''''', 8),
+	('35', '35.9', 'A few harder problems to think about', 9),
+	('36', '36.1', 'Pre-measures', 1),
+	('36', '36.2', 'Outer measures', 2),
+	('36', '36.3', 'Carathéodory extension for outer measures', 3),
+	('36', '36.4', 'Defining the Lebesgue measure', 4),
+	('36', '36.5', 'A fourth row: Carathéodory for pre-measures', 5),
+	('36', '36.6', 'From now on, we assume the Borel measure', 6),
+	('36', '36.7', 'A few harder problems to think about', 7),
+	('37', '37.1', 'The definition', 1),
+	('37', '37.2', 'An equivalent definition', 2),
+	('37', '37.3', 'Relation to Riemann integrals (or: actually computing Lebesgue integrals)', 3),
+	('37', '37.4', 'A few harder problems to think about', 4),
+	('38', '38.1', 'Motivating limit interchange', 1),
+	('38', '38.2', 'Overview', 2),
+	('38', '38.3', 'Fatou''s lemma', 3),
+	('38', '38.4', 'Everything else', 4),
+	('38', '38.5', 'Fubini and Tonelli', 5),
+	('38', '38.6', 'A few harder problems to think about', 6),
+	('39', '39.1', 'LCA groups', 1),
+	('39', '39.2', 'The Pontryagin dual', 2),
+	('39', '39.3', 'The orthonormal basis in the compact case', 3),
+	('39', '39.4', 'The Fourier transform of the non-compact case', 4),
+	('39', '39.5', 'Summary', 5),
+	('39', '39.6', 'A few harder problems to think about', 6),
+	('40', '40.1', 'Random variables', 1),
+	('40', '40.2', 'Distribution functions', 2),
+	('40', '40.3', 'Examples of random variables', 3),
+	('40', '40.4', 'Characteristic functions', 4),
+	('40', '40.5', 'Independent random variables', 5),
+	('40', '40.6', 'A few harder problems to think about', 6),
+	('41', '41.1', 'Notions of convergence', 1),
+	('41', '41.2', 'Weak law of large numbers', 2),
+	('41', '41.3', 'Strong law of large numbers', 3),
+	('41', '41.4', 'A few harder problems to think about', 4),
+	('42', '42.1', 'How to make money almost surely', 1),
+	('42', '42.2', 'Sub-σ-algebras and filtrations', 2),
+	('42', '42.3', 'Conditional expectation', 3),
+	('42', '42.4', 'Supermartingales', 4),
+	('42', '42.5', 'Optional stopping', 5),
+	('42', '42.6', 'Fun applications of optional stopping (TO DO)', 6),
+	('42', '42.7', 'A few harder problems to think about', 7),
+	('43', '43.1', 'The total derivative', 1),
+	('43', '43.2', 'The projection principle', 2),
+	('43', '43.3', 'Total and partial derivatives', 3),
+	('43', '43.4', '(Optional) A word on higher derivatives', 4),
+	('43', '43.5', 'Towards differential forms', 5),
+	('43', '43.6', 'A few harder problems to think about', 6),
+	('44', '44.1', 'Pictures of differential forms', 1),
+	('44', '44.2', 'Pictures of exterior derivatives', 2),
+	('44', '44.3', 'Differential forms', 3),
+	('44', '44.4', 'Exterior derivatives', 4),
+	('44', '44.5', 'Digression: k(V) versus (k(V))', 5),
+	('44', '44.6', 'Tangential remark: Arc length ds is not a 1-form', 6),
+	('44', '44.7', 'Closed and exact forms', 7),
+	('44', '44.8', 'A few harder problems to think about', 8),
+	('45', '45.1', 'Motivation: line integrals', 1),
+	('45', '45.2', 'Pullbacks', 2),
+	('45', '45.3', 'Cells', 3),
+	('45', '45.4', 'Boundaries', 4),
+	('45', '45.5', 'Stokes'' theorem', 5),
+	('45', '45.6', 'Back to Earth: A comparison to what you learned in vector calculus', 6),
+	('45', '45.7', 'A few harder problems to think about', 7),
+	('46', '46.1', 'Topological manifolds', 1),
+	('46', '46.2', 'Smooth manifolds', 2),
+	('46', '46.3', 'Regular value theorem', 3),
+	('46', '46.4', 'Differential forms on manifolds', 4),
+	('46', '46.5', 'Orientations', 5),
+	('46', '46.6', 'Stokes'' theorem for manifolds', 6),
+	('46', '46.7', '(Optional) The tangent and cotangent space', 7),
+	('46', '46.8', 'A few harder problems to think about', 8),
+	('47', '47.1', 'Complex structures', 1),
+	('47', '47.2', 'Riemann surface', 2),
+	('47', '47.3', 'Complex manifold', 3),
+	('47', '47.4', 'Examples of Riemann surfaces', 4),
+	('48', '48.1', 'Definition', 1),
+	('48', '48.2', 'Functions to the Riemann sphere', 2),
+	('48', '48.3', 'Some other nice properties', 3),
+	('48', '48.4', 'Multiplicity of a map', 4),
+	('48', '48.5', 'The sum of the orders of a meromorphic function', 5),
+	('48', '48.6', 'The Hurwitz formula', 6),
+	('48', '48.7', 'The identity theorem', 7),
+	('49', '49.1', 'Affine plane curves', 1),
+	('49', '49.2', 'The projective line CP1', 2),
+	('49', '49.3', 'Projective plane curves', 3),
+	('49', '49.4', 'Filling in the holes', 4),
+	('49', '49.5', 'Nodes of a plane curve', 5),
+	('50', '50.1', 'Differential form on C', 1),
+	('50', '50.2', 'Visualization of differential forms', 2),
+	('51', '51.1', 'Motivation', 1),
+	('51', '51.2', 'Divisors', 2),
+	('51', '51.3', 'Degree of a divisor', 3),
+	('51', '51.4', 'The principal divisor of a meromorphic function', 4),
+	('51', '51.5', 'The Riemann-Roch theorem', 5),
+	('52', '52.1', 'Overview', 1),
+	('52', '52.2', 'Definition', 2),
+	('52', '52.3', 'Visualizing a line bundle', 3),
+	('52', '52.4', 'Morphisms between line bundles', 4),
+	('52', '52.5', 'Relation to invertible sheaves', 5),
+	('53', '53.1', 'Motivation from high school algebra', 1),
+	('53', '53.2', 'Algebraic numbers and algebraic integers', 2),
+	('53', '53.3', 'Number fields', 3),
+	('53', '53.4', 'Primitive element theorem, and monogenic extensions', 4),
+	('53', '53.5', 'A few harder problems to think about', 5),
+	('54', '54.1', 'Norms and traces', 1),
+	('54', '54.2', 'The ring of integers', 2),
+	('54', '54.3', 'On monogenic extensions', 3),
+	('54', '54.4', 'A few harder problems to think about', 4),
+	('55', '55.1', 'Motivation', 1),
+	('55', '55.2', 'Ideal arithmetic', 2),
+	('55', '55.3', 'Dedekind domains', 3),
+	('55', '55.4', 'Unique factorization works', 4),
+	('55', '55.5', 'The factoring algorithm', 5),
+	('55', '55.6', 'Fractional ideals', 6),
+	('55', '55.7', 'The ideal norm', 7),
+	('55', '55.8', 'A few harder problems to think about', 8),
+	('56', '56.1', 'The class group', 1),
+	('56', '56.2', 'The discriminant of a number field', 2),
+	('56', '56.3', 'The signature of a number field', 3),
+	('56', '56.4', 'Minkowski''s theorem', 4),
+	('56', '56.5', 'The trap box', 5),
+	('56', '56.6', 'The Minkowski bound', 6),
+	('56', '56.7', 'The class group is finite', 7),
+	('56', '56.8', 'Computation of class numbers', 8),
+	('56', '56.9', 'Optional: Proof that OK is a free Z-module', 9),
+	('56', '56.10', 'A few harder problems to think about', 10),
+	('57', '57.1', 'A few harder problems to think about', 1),
+	('58', '58.1', 'Units', 1),
+	('58', '58.2', 'Dirichlet''s unit theorem', 2),
+	('58', '58.3', 'Finding fundamental units', 3),
+	('58', '58.4', 'Pell''s equation', 4),
+	('58', '58.5', 'A few harder problems to think about', 5),
+	('59', '59.1', 'Motivation', 1),
+	('59', '59.2', 'Field extensions, algebraic extension, and splitting fields', 2),
+	('59', '59.3', 'Embeddings into algebraic closures for number fields', 3),
+	('59', '59.4', 'Everyone hates characteristic 2: separable vs irreducible', 4),
+	('59', '59.5', 'Automorphism groups and Galois extensions', 5),
+	('59', '59.6', 'Fundamental theorem of Galois theory', 6),
+	('59', '59.7', 'A few harder problems to think about', 7),
+	('59', '59.8', '(Optional) Proof that Galois extensions are splitting', 8),
+	('60', '60.1', 'Example of a finite field', 1),
+	('60', '60.2', 'Finite fields have prime power order', 2),
+	('60', '60.3', 'All finite fields are isomorphic', 3),
+	('60', '60.4', 'The Galois theory of finite fields', 4),
+	('60', '60.5', 'Extra: The multiplicative group of a finite field', 5),
+	('60', '60.6', 'A few harder problems to think about', 6),
+	('61', '61.1', 'Ramified / inert / split primes', 1),
+	('61', '61.2', 'Primes ramify if and only if they divide K', 2),
+	('61', '61.3', 'Inertial degrees', 3),
+	('61', '61.4', 'The magic of Galois extensions', 4),
+	('61', '61.5', '(Optional) Decomposition and inertia groups', 5),
+	('61', '61.6', 'Tangential remark: more general Galois extensions', 6),
+	('61', '61.7', 'A few harder problems to think about', 7),
+	('62', '62.1', 'Frobenius elements', 1),
+	('62', '62.2', 'Conjugacy classes', 2),
+	('62', '62.3', 'Chebotarev density theorem', 3),
+	('62', '62.4', 'Example: Frobenius elements of cyclotomic fields', 4),
+	('62', '62.5', 'Frobenius elements behave well with restriction', 5),
+	('62', '62.6', 'Application: Quadratic reciprocity', 6),
+	('62', '62.7', 'Frobenius elements control factorization', 7),
+	('62', '62.8', 'Example application: IMO 2003 problem 6', 8),
+	('62', '62.9', 'A few harder problems to think about', 9),
+	('63', '63.1', 'Overview', 1),
+	('63', '63.2', 'Infinite primes', 2),
+	('63', '63.3', 'Modular arithmetic with infinite primes', 3),
+	('63', '63.4', 'Infinite primes in extensions', 4),
+	('63', '63.5', 'Frobenius element and Artin symbol', 5),
+	('63', '63.6', 'Artin reciprocity', 6),
+	('63', '63.7', 'Application: Generalization of sum of two squares', 7),
+	('63', '63.8', 'A few harder problems to think about', 8),
+	('64', '64.1', 'Spheres', 1),
+	('64', '64.2', 'Quotient topology', 2),
+	('64', '64.3', 'Product topology', 3),
+	('64', '64.4', 'Disjoint union and wedge sum', 4),
+	('64', '64.5', 'CW complexes', 5),
+	('64', '64.6', 'The torus, Klein bottle, RPn, CPn', 6),
+	('64', '64.7', 'A few harder problems to think about', 7),
+	('65', '65.1', 'Fusing paths together', 1),
+	('65', '65.2', 'Fundamental groups', 2),
+	('65', '65.3', 'Fundamental groups are invariant under homeomorphism', 3),
+	('65', '65.4', 'Higher homotopy groups', 4),
+	('65', '65.5', 'Homotopy equivalent spaces', 5),
+	('65', '65.6', 'The pointed homotopy category', 6),
+	('65', '65.7', 'A few harder problems to think about', 7),
+	('66', '66.1', 'Even coverings and covering projections', 1),
+	('66', '66.2', 'Lifting theorem', 2),
+	('66', '66.3', 'Lifting correspondence', 3),
+	('66', '66.4', 'Regular coverings', 4),
+	('66', '66.5', 'The algebra of fundamental groups', 5),
+	('66', '66.6', 'A few harder problems to think about', 6),
+	('67', '67.1', 'Motivation: isomorphisms', 1),
+	('67', '67.2', 'Categories, and examples thereof', 2),
+	('67', '67.3', 'Special objects in categories', 3),
+	('67', '67.4', 'Binary products', 4),
+	('67', '67.5', 'Monic and epic maps', 5),
+	('67', '67.6', 'A few harder problems to think about', 6),
+	('68', '68.1', 'Many examples of functors', 1),
+	('68', '68.2', 'Covariant functors', 2),
+	('68', '68.3', 'Covariant functors as indexed family of objects', 3),
+	('68', '68.4', 'Contravariant functors', 4),
+	('68', '68.5', 'Equivalence of categories', 5),
+	('68', '68.6', '(Optional) Natural transformations', 6),
+	('68', '68.7', '(Optional) The Yoneda lemma', 7),
+	('68', '68.8', 'A few harder problems to think about', 8),
+	('69', '69.1', 'Equalizers', 1),
+	('69', '69.2', 'Pullback squares (TO DO)', 2),
+	('69', '69.3', 'Limits', 3),
+	('69', '69.4', 'A few harder problems to think about', 4),
+	('70', '70.1', 'Zero objects, kernels, cokernels, and images', 1),
+	('70', '70.2', 'Additive and abelian categories', 2),
+	('70', '70.3', 'Exact sequences', 3),
+	('70', '70.4', 'The Freyd-Mitchell embedding theorem', 4),
+	('70', '70.5', 'Breaking long exact sequences', 5),
+	('70', '70.6', 'A few harder problems to think about', 6),
+	('71', '71.1', 'Simplices and boundaries', 1),
+	('71', '71.2', 'The singular homology groups', 2),
+	('71', '71.3', 'The homology functor and chain complexes', 3),
+	('71', '71.4', 'More examples of chain complexes', 4),
+	('71', '71.5', 'A few harder problems to think about', 5),
+	('72', '72.1', 'Short exact sequences and four examples', 1),
+	('72', '72.2', 'The long exact sequence of homology groups', 2),
+	('72', '72.3', 'The Mayer-Vietoris sequence', 3),
+	('72', '72.4', 'A few harder problems to think about', 4),
+	('73', '73.1', 'Motivation', 1),
+	('73', '73.2', 'The long exact sequences', 2),
+	('73', '73.3', 'The category of pairs', 3),
+	('73', '73.4', 'Excision', 4),
+	('73', '73.5', 'Some applications', 5),
+	('73', '73.6', 'Invariance of dimension', 6),
+	('73', '73.7', 'A few harder problems to think about', 7),
+	('74', '74.1', 'Degrees', 1),
+	('74', '74.2', 'Cellular chain complex', 2),
+	('74', '74.3', 'Digression: why are the homology groups equal?', 3),
+	('74', '74.4', 'Application: Euler characteristic via Betti numbers', 4),
+	('74', '74.5', 'The cellular boundary formula', 5),
+	('74', '74.6', 'A few harder problems to think about', 6),
+	('75', '75.1', 'Cochain complexes', 1),
+	('75', '75.2', 'Cohomology of spaces', 2),
+	('75', '75.3', 'Cohomology of spaces is functorial', 3),
+	('75', '75.4', 'Universal coefficient theorem', 4),
+	('75', '75.5', 'Explanation for universal coefficient theorem', 5),
+	('75', '75.6', 'Example computation of cohomology groups', 6),
+	('75', '75.7', 'Visualization of cohomology groups', 7),
+	('75', '75.8', 'Relative cohomology groups', 8),
+	('75', '75.9', 'A few harder problems to think about', 9),
+	('76', '76.1', 'Poincaré duality', 1),
+	('76', '76.2', 'de Rham cohomology', 2),
+	('76', '76.3', 'Graded rings', 3),
+	('76', '76.4', 'Cup products', 4),
+	('76', '76.5', 'Relative cohomology pseudo-rings', 5),
+	('76', '76.6', 'Wedge sums', 6),
+	('76', '76.7', 'Cross product', 7),
+	('76', '76.8', 'Künneth formula', 8),
+	('76', '76.9', 'A few harder problems to think about', 9),
+	('77', '77.1', 'Affine varieties', 1),
+	('77', '77.2', 'Naming affine varieties via ideals', 2),
+	('77', '77.3', 'Radical ideals and Hilbert''s Nullstellensatz', 3),
+	('77', '77.4', 'Pictures of varieties in A1', 4),
+	('77', '77.5', 'Prime ideals correspond to irreducible affine varieties', 5),
+	('77', '77.6', 'Pictures in A2 and A3', 6),
+	('77', '77.7', 'Maximal ideals', 7),
+	('77', '77.8', 'Motivating schemes with non-radical ideals', 8),
+	('77', '77.9', 'A few harder problems to think about', 9),
+	('78', '78.1', 'Synopsis', 1),
+	('78', '78.2', 'The Zariski topology on An', 2),
+	('78', '78.3', 'The Zariski topology on affine varieties', 3),
+	('78', '78.4', 'Coordinate rings', 4),
+	('78', '78.5', 'The sheaf of regular functions', 5),
+	('78', '78.6', 'Regular functions on distinguished open sets', 6),
+	('78', '78.7', 'Baby ringed spaces', 7),
+	('78', '78.8', 'A few harder problems to think about', 8),
+	('79', '79.1', 'Graded rings', 1),
+	('79', '79.2', 'The ambient space', 2),
+	('79', '79.3', 'Homogeneous ideals', 3),
+	('79', '79.4', 'As ringed spaces', 4),
+	('79', '79.5', 'Examples of regular functions', 5),
+	('79', '79.6', 'A few harder problems to think about', 6),
+	('80', '80.1', 'Non-radical ideals', 1),
+	('80', '80.2', 'Hilbert functions of finitely many points', 2),
+	('80', '80.3', 'Hilbert polynomials', 3),
+	('80', '80.4', 'Bézout''s theorem', 4),
+	('80', '80.5', 'Applications', 5),
+	('80', '80.6', 'A few harder problems to think about', 6),
+	('81', '81.1', 'Defining morphisms of baby ringed spaces', 1),
+	('81', '81.2', 'Classifying the simplest examples', 2),
+	('81', '81.3', 'Some more applications and examples', 3),
+	('81', '81.4', 'The hyperbola effect', 4),
+	('81', '81.5', 'A few harder problems to think about', 5),
+	('82', '82.1', 'Motivation and warnings', 1),
+	('82', '82.2', 'Pre-sheaves', 2),
+	('82', '82.3', 'Stalks and germs', 3),
+	('82', '82.4', 'Sheaves', 4),
+	('82', '82.5', 'For sheaves, sections ``are'''' sequences of germs', 5),
+	('82', '82.6', 'Sheafification (optional)', 6),
+	('82', '82.7', 'A few harder problems to think about', 7),
+	('83', '83.1', 'Spoilers', 1),
+	('83', '83.2', 'The definition', 2),
+	('83', '83.3', 'Localization away from an element', 3),
+	('83', '83.4', 'Localization at a prime ideal', 4),
+	('83', '83.5', 'Prime ideals of localizations', 5),
+	('83', '83.6', 'Prime ideals of quotients', 6),
+	('83', '83.7', 'Localization commutes with quotients', 7),
+	('83', '83.8', 'A few harder problems to think about', 8),
+	('84', '84.1', 'Some more advertising', 1),
+	('84', '84.2', 'The set of points', 2),
+	('84', '84.3', 'The Zariski topology on the spectrum', 3),
+	('84', '84.4', 'Krull dimension', 4),
+	('84', '84.5', 'On radicals', 5),
+	('84', '84.6', 'A few harder problems to think about', 6),
+	('85', '85.1', 'A useless definition of the structure sheaf', 1),
+	('85', '85.2', 'The value of distinguished open sets (or: how to actually compute sections)', 2),
+	('85', '85.3', 'The stalks of the structure sheaf', 3),
+	('85', '85.4', 'Local rings and residue fields: linking germs to values', 4),
+	('85', '85.5', 'Recap', 5),
+	('85', '85.6', 'Functions are determined by germs, not values', 6),
+	('85', '85.7', 'A few harder problems to think about', 7),
+	('86', '86.1', 'Example: Spec k, a single point', 1),
+	('86', '86.2', 'Spec C[x], a one-dimensional line', 2),
+	('86', '86.3', 'Spec R[x], a one-dimensional line with complex conjugates glued (no fear nullstellensatz)', 3),
+	('86', '86.4', 'Spec k[x], over any ground field', 4),
+	('86', '86.5', 'Spec Z, a one-dimensional scheme', 5),
+	('86', '86.6', 'Spec k[x] / (x2-7x+12), two points', 6),
+	('86', '86.7', 'Spec k[x]/(x2), the double point', 7),
+	('86', '86.8', 'Spec k[x]/(x3-5x2), a double point and a single point', 8),
+	('86', '86.9', 'Spec Z/60Z, a scheme with three points', 9),
+	('86', '86.10', 'Spec k[x,y], the two-dimensional plane', 10),
+	('86', '86.11', 'Spec Z[x], a two-dimensional scheme, and Mumford''s picture', 11),
+	('86', '86.12', 'Spec k[x,y]/(y-x2), the parabola', 12),
+	('86', '86.13', 'Spec Z[i], the Gaussian integers (one-dimensional)', 13),
+	('86', '86.14', 'Long example: Spec k[x,y]/(xy), two axes', 14),
+	('86', '86.15', 'Spec k[x,x-1], the punctured line (or hyperbola)', 15),
+	('86', '86.16', 'Spec k[x](x), zooming in to the origin of the line', 16),
+	('86', '86.17', 'Spec k[x,y](x,y), zooming in to the origin of the plane', 17),
+	('86', '86.18', 'Spec k[x,y](0) = Spec k(x,y), the stalk above the generic point', 18),
+	('86', '86.19', 'A few harder problems to think about', 19),
+	('87', '87.1', 'Morphisms of ringed spaces via sections', 1),
+	('87', '87.2', 'Morphisms of ringed spaces via stalks', 2),
+	('87', '87.3', 'Morphisms of locally ringed spaces', 3),
+	('87', '87.4', 'A few examples of morphisms between affine schemes', 4),
+	('87', '87.5', 'The big theorem', 5),
+	('87', '87.6', 'More examples of scheme morphisms', 6),
+	('87', '87.7', 'A little bit on non-affine schemes', 7),
+	('87', '87.8', 'Where to go from here', 8),
+	('87', '87.9', 'A few harder problems to think about', 9),
+	('88', '88.1', 'Let''s construct a monster', 1),
+	('88', '88.2', 'Review of finite induction', 2),
+	('88', '88.3', 'Transfinite induction', 3),
+	('88', '88.4', 'Wrapping up functional equations', 4),
+	('88', '88.5', 'Zorn''s lemma', 5),
+	('88', '88.6', 'A few harder problems to think about', 6),
+	('89', '89.1', 'The ultimate functional equation', 1),
+	('89', '89.2', 'Cantor''s paradox', 2),
+	('89', '89.3', 'The language of set theory', 3),
+	('89', '89.4', 'The axioms of ZFC', 4),
+	('89', '89.5', 'Encoding', 5),
+	('89', '89.6', 'Choice and well-ordering', 6),
+	('89', '89.7', 'Sets vs classes', 7),
+	('89', '89.8', 'A few harder problems to think about', 8),
+	('90', '90.1', 'Counting for preschoolers', 1),
+	('90', '90.2', 'Counting for set theorists', 2),
+	('90', '90.3', 'Definition of an ordinal', 3),
+	('90', '90.4', 'Ordinals are ``tall''''', 4),
+	('90', '90.5', 'Transfinite induction and recursion', 5),
+	('90', '90.6', 'Ordinal arithmetic', 6),
+	('90', '90.7', 'The hierarchy of sets', 7),
+	('90', '90.8', 'A few harder problems to think about', 8),
+	('91', '91.1', 'Equinumerous sets and cardinals', 1),
+	('91', '91.2', 'Cardinalities', 2),
+	('91', '91.3', 'Aleph numbers', 3),
+	('91', '91.4', 'Cardinal arithmetic', 4),
+	('91', '91.5', 'Cardinal exponentiation', 5),
+	('91', '91.6', 'Cofinality', 6),
+	('91', '91.7', 'Inaccessible cardinals', 7),
+	('91', '91.8', 'A few harder problems to think about', 8),
+	('92', '92.1', 'Models', 1),
+	('92', '92.2', 'Sentences and satisfaction', 2),
+	('92', '92.3', 'The Levy hierarchy', 3),
+	('92', '92.4', 'Substructures, and Tarski-Vaught', 4),
+	('92', '92.5', 'Obtaining the axioms of ZFC', 5),
+	('92', '92.6', 'Mostowski collapse', 6),
+	('92', '92.7', 'Adding an inaccessible', 7),
+	('92', '92.8', 'FAQ''s on countable models', 8),
+	('92', '92.9', 'Picturing inner models', 9),
+	('92', '92.10', 'A few harder problems to think about', 10),
+	('93', '93.1', 'Setting up posets', 1),
+	('93', '93.2', 'More properties of posets', 2),
+	('93', '93.3', 'Names, and the generic extension', 3),
+	('93', '93.4', 'Fundamental theorem of forcing', 4),
+	('93', '93.5', '(Optional) Defining the relation', 5),
+	('93', '93.6', 'The remaining axioms', 6),
+	('93', '93.7', 'A few harder problems to think about', 7),
+	('94', '94.1', 'Adding in reals', 1),
+	('94', '94.2', 'The countable chain condition', 2),
+	('94', '94.3', 'Preserving cardinals', 3),
+	('94', '94.4', 'Infinite combinatorics', 4),
+	('94', '94.5', 'A few harder problems to think about', 5),
+	('A', 'A.1', 'Basic algebra and topology', 1),
+	('A', 'A.2', 'Second-year topics', 2),
+	('A', 'A.3', 'Advanced topics', 3),
+	('A', 'A.4', 'Topics not in Napkin', 4),
+	('D', 'D.1', 'General', 1),
+	('D', 'D.2', 'Functions and sets', 2),
+	('D', 'D.3', 'Abstract and linear algebra', 3),
+	('D', 'D.4', 'Quantum computation', 4),
+	('D', 'D.5', 'Topology and real/complex analysis', 5),
+	('D', 'D.6', 'Measure theory and probability', 6),
+	('D', 'D.7', 'Algebraic topology', 7),
+	('D', 'D.8', 'Category theory', 8),
+	('D', 'D.9', 'Differential geometry', 9),
+	('D', 'D.10', 'Algebraic number theory', 10),
+	('D', 'D.11', 'Representation theory', 11),
+	('D', 'D.12', 'Algebraic geometry', 12),
+	('D', 'D.13', 'Set theory', 13),
+	('E', 'E.1', 'Sets', 1),
+	('E', 'E.2', 'Functions', 2),
+	('E', 'E.3', 'Equivalence relations', 3)
+) AS v(chapter, key, title, ord) JOIN "math"."chapters" c ON c.key = v.chapter;
+--> statement-breakpoint
+-- Progress bookkeeping, so a plain UPDATE from a bot or psql behaves like the site:
+-- status changes stamp started_at/completed_at, and every status, exercise, note and section
+-- change is logged to math.activity (source from the transaction-local math.source setting,
+-- 'sql' when unset; math.apply_progress sets it).
+CREATE FUNCTION "math"."chapters_stamp"() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+  IF NEW.status IS DISTINCT FROM OLD.status THEN
+    IF NEW.status = 'not_started' THEN
+      NEW.started_at := NULL;
+      NEW.completed_at := NULL;
+    ELSE
+      IF NEW.status IN ('reading', 'exercises', 'done') AND NEW.started_at IS NULL THEN
+        NEW.started_at := now();
+      END IF;
+      IF NEW.status = 'done' THEN
+        NEW.completed_at := coalesce(NEW.completed_at, now());
+      ELSE
+        NEW.completed_at := NULL;
+      END IF;
+    END IF;
+  END IF;
+  NEW.updated_at := now();
+  RETURN NEW;
+END $$;
+--> statement-breakpoint
+CREATE FUNCTION "math"."chapters_log"() RETURNS trigger LANGUAGE plpgsql AS $$
+DECLARE
+  src text := coalesce(nullif(current_setting('math.source', true), ''), 'sql');
+BEGIN
+  IF NEW.status IS DISTINCT FROM OLD.status THEN
+    INSERT INTO math.activity (chapter_id, kind, from_value, to_value, source)
+    VALUES (NEW.id, 'status', OLD.status, NEW.status, src);
+  END IF;
+  IF NEW.exercises_done IS DISTINCT FROM OLD.exercises_done THEN
+    INSERT INTO math.activity (chapter_id, kind, from_value, to_value, delta, source)
+    VALUES (NEW.id, 'exercises', OLD.exercises_done::text, NEW.exercises_done::text,
+            NEW.exercises_done - OLD.exercises_done, src);
+  END IF;
+  IF coalesce(NEW.notes, '') IS DISTINCT FROM coalesce(OLD.notes, '') THEN
+    INSERT INTO math.activity (chapter_id, kind, to_value, source)
+    VALUES (NEW.id, 'note', left(NEW.notes, 200), src);
+  END IF;
+  RETURN NULL;
+END $$;
+--> statement-breakpoint
+CREATE FUNCTION "math"."sections_log"() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+  IF (NEW.done_at IS NULL) IS DISTINCT FROM (OLD.done_at IS NULL) THEN
+    INSERT INTO math.activity (chapter_id, section_id, kind, to_value, source)
+    VALUES (NEW.chapter_id, NEW.id, 'section', CASE WHEN NEW.done_at IS NULL THEN 'undone' ELSE 'done' END,
+            coalesce(nullif(current_setting('math.source', true), ''), 'sql'));
+  END IF;
+  RETURN NULL;
+END $$;
+--> statement-breakpoint
+CREATE TRIGGER "chapters_stamp" BEFORE UPDATE ON "math"."chapters"
+  FOR EACH ROW EXECUTE FUNCTION "math"."chapters_stamp"();
+--> statement-breakpoint
+CREATE TRIGGER "chapters_log" AFTER UPDATE ON "math"."chapters"
+  FOR EACH ROW EXECUTE FUNCTION "math"."chapters_log"();
+--> statement-breakpoint
+CREATE TRIGGER "sections_log" AFTER UPDATE OF "done_at" ON "math"."sections"
+  FOR EACH ROW EXECUTE FUNCTION "math"."sections_log"();
+--> statement-breakpoint
+-- One progress update as JSON (or an array of them), the format bots send:
+--   {"chapter": "3", "status": "reading" | "exercises" | "done" | "skipped" | "not_started",
+--    "exercises_done": 4  (absolute) or "exercises_add": 1 (relative),
+--    "notes": "short note" ("" clears),
+--    "sections_done": ["3.1", "3.2"] or "all", "sections_undone": [...] or "all",
+--    "source": "bot"}
+-- Every field but "chapter" is optional. Returns the updated chapter(s) as JSON.
+CREATE FUNCTION "math"."apply_progress"(p jsonb) RETURNS jsonb LANGUAGE plpgsql AS $$
+DECLARE
+  ch_id integer;
+  k text;
+  item jsonb;
+  res jsonb := '[]'::jsonb;
+BEGIN
+  IF jsonb_typeof(p) = 'array' THEN
+    FOR item IN SELECT * FROM jsonb_array_elements(p) LOOP
+      res := res || jsonb_build_array(math.apply_progress(item));
+    END LOOP;
+    RETURN res;
+  END IF;
+  k := btrim(p->>'chapter');
+  SELECT id INTO ch_id FROM math.chapters WHERE key = upper(k);
+  IF ch_id IS NULL THEN
+    RAISE EXCEPTION 'math.apply_progress: unknown chapter %', coalesce(k, '(missing)');
+  END IF;
+  PERFORM set_config('math.source', coalesce(nullif(p->>'source', ''), 'bot'), true);
+  UPDATE math.chapters SET
+    status = coalesce(nullif(p->>'status', ''), status),
+    exercises_done = CASE
+      WHEN p ? 'exercises_done' THEN greatest(0, (p->>'exercises_done')::int)
+      WHEN p ? 'exercises_add' THEN greatest(0, exercises_done + (p->>'exercises_add')::int)
+      ELSE exercises_done END,
+    notes = CASE WHEN p ? 'notes' THEN nullif(btrim(p->>'notes'), '') ELSE notes END
+  WHERE id = ch_id;
+  IF p ? 'sections_done' THEN
+    UPDATE math.sections SET done_at = now()
+    WHERE chapter_id = ch_id AND done_at IS NULL
+      AND (p->'sections_done' = '"all"'::jsonb
+        OR (jsonb_typeof(p->'sections_done') = 'array'
+          AND key IN (SELECT jsonb_array_elements_text(p->'sections_done'))));
+  END IF;
+  IF p ? 'sections_undone' THEN
+    UPDATE math.sections SET done_at = NULL
+    WHERE chapter_id = ch_id AND done_at IS NOT NULL
+      AND (p->'sections_undone' = '"all"'::jsonb
+        OR (jsonb_typeof(p->'sections_undone') = 'array'
+          AND key IN (SELECT jsonb_array_elements_text(p->'sections_undone'))));
+  END IF;
+  SELECT jsonb_build_object(
+    'chapter', c.key, 'title', c.title, 'status', c.status,
+    'exercises_done', c.exercises_done, 'exercise_count', c.exercise_count,
+    'started_at', c.started_at, 'completed_at', c.completed_at,
+    'sections_done', (SELECT count(*) FROM math.sections s WHERE s.chapter_id = c.id AND s.done_at IS NOT NULL),
+    'sections', (SELECT count(*) FROM math.sections s WHERE s.chapter_id = c.id))
+  INTO item FROM math.chapters c WHERE c.id = ch_id;
+  RETURN item;
+END $$;
+--> statement-breakpoint
+-- Privacy: private by default (owner-only on the site, MATH_PRIVATE in #lib/math). Like notes
+-- and tasks, only the app role can read or write (no personal_ro). Grants only run on prod
+-- (migrations as `personal`).
+REVOKE ALL ON SCHEMA math FROM PUBLIC;
+--> statement-breakpoint
+DO $$
+BEGIN
+  IF current_user = 'personal' AND EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'personal_app') THEN
+    GRANT USAGE ON SCHEMA math TO personal_app;
+    GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA math TO personal_app;
+    GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA math TO personal_app;
+    GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA math TO personal_app;
+    ALTER DEFAULT PRIVILEGES FOR ROLE personal IN SCHEMA math
+      GRANT SELECT, INSERT, UPDATE, DELETE ON TABLES TO personal_app;
+    ALTER DEFAULT PRIVILEGES FOR ROLE personal IN SCHEMA math
+      GRANT USAGE, SELECT ON SEQUENCES TO personal_app;
+  END IF;
+END $$;

package.json

@@ -35,6 +35,7 @@
 		"wildlife:refresh": "scripts/wildlife-refresh.sh",
 		"db:seed:cod": "bun scripts/seed-cod-catalog.ts",
 		"cs-prices:ingest": "bun scripts/ingest-cs-prices.ts",
+		"cs-prices:daily": "bun scripts/cs-prices.ts daily",
 		"house:worker": "bun scripts/house-worker.ts",
 		"house": "bun scripts/house-listing.ts",
 		"house:add": "bun scripts/house-listing.ts add",

scripts/cs-history.ts

@@ -0,0 +1,399 @@
+/**
+ * CS2 price history backfill into cs.daily_prices, under separate `*-history` streams so it never
+ * mixes with the daily scrape. Resumable (cs.history_fetches) and throttled; run in the background:
+ *
+ *   bun scripts/cs-history.ts fx              ECB USD→EUR for every day since 2013 (Frankfurter),
+ *                                             weekends/holidays carry the last rate forward
+ *   bun scripts/cs-history.ts steam [max]     Steam Community Market daily median sale price +
+ *                                             volume since listing, read from the public market
+ *                                             listing page (no login). One page holds every wear /
+ *                                             StatTrak / Souvenir sibling, so it is ~1 request per
+ *                                             skin, paced ~9 s apart with backoff on 429.
+ *   bun scripts/cs-history.ts csfloat-queue   print CSFloat targets (NDJSON) for an off-box fetcher
+ *   bun scripts/cs-history.ts csfloat-import  read CSFloat graph NDJSON on stdin and store it
+ *   bun scripts/cs-history.ts status          coverage per history stream
+ *
+ * Steam prices arrive in the page's wallet currency (EUR here, `ecurrency` 3) and are stored as
+ * is; USD streams (CSFloat) are converted per day with cs.fx_rates on read.
+ */
+import postgres from 'postgres';
+
+if (!process.env.DB_URL) throw new Error('DB_URL is required');
+const sql = postgres(process.env.DB_URL, { max: 2, onnotice: () => {} });
+const mode = process.argv[2] ?? 'status';
+const ua = 'Mozilla/5.0';
+const sleep = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
+const log = (...args: unknown[]) => console.log(new Date().toISOString().slice(0, 19), ...args);
+
+const streams = {
+	steam: {
+		source: 'steam-market',
+		kind: 'sale-median-history',
+		label: 'Steam Market daily median sale (history)'
+	},
+	csfloat: {
+		source: 'csfloat',
+		kind: 'sale-avg-history',
+		label: 'CSFloat daily average sale (history)'
+	}
+};
+async function streamId(source: string, currency: string, kind: string, label: string) {
+	const [row] = await sql<{ id: number }[]>`
+		INSERT INTO cs.price_streams (source, currency, kind, label)
+		VALUES (${source}, ${currency}, ${kind}, ${label})
+		ON CONFLICT (source, currency, kind) DO UPDATE SET label = EXCLUDED.label RETURNING id`;
+	return row.id;
+}
+
+type Day = { day: string; cents: number; volume: number | null };
+async function store(stream: number, item: number, days: Day[]) {
+	for (let offset = 0; offset < days.length; offset += 5000) {
+		const chunk = days.slice(offset, offset + 5000);
+		await sql`
+			INSERT INTO cs.daily_prices (item_id, stream_id, day, price_cents, volume)
+			SELECT ${item}::int, ${stream}::smallint, day, price_cents, volume
+			FROM unnest(${chunk.map((d) => d.day)}::date[], ${chunk.map((d) => d.cents)}::int[],
+				${chunk.map((d) => d.volume)}::int[]) AS x(day, price_cents, volume)
+			ON CONFLICT (item_id, stream_id, day) DO UPDATE SET
+				price_cents = EXCLUDED.price_cents, volume = EXCLUDED.volume`;
+	}
+}
+async function mark(item: number, source: string, days: Day[], error: string | null = null) {
+	await sql`
+		INSERT INTO cs.history_fetches (item_id, source, fetched_at, points, first_day, error)
+		VALUES (${item}, ${source}, now(), ${days.length}, ${days[0]?.day ?? null}, ${error})
+		ON CONFLICT (item_id, source) DO UPDATE SET fetched_at = now(), points = EXCLUDED.points,
+			first_day = EXCLUDED.first_day, error = EXCLUDED.error`;
+}
+
+async function fx() {
+	const from = '2013-01-01';
+	const to = new Date().toISOString().slice(0, 10);
+	let rates: Record<string, { EUR: number }> | undefined;
+	for (const url of [
+		`https://api.frankfurter.dev/v1/${from}..${to}?base=USD&symbols=EUR`,
+		`https://api.frankfurter.app/${from}..${to}?from=USD&to=EUR`
+	]) {
+		const response = await fetch(url, { signal: AbortSignal.timeout(120_000) });
+		if (response.ok) {
+			rates = ((await response.json()) as { rates: typeof rates }).rates;
+			break;
+		}
+	}
+	if (!rates) throw new Error('No FX history');
+	const days: string[] = [];
+	const values: number[] = [];
+	let last: number | null = null;
+	for (let t = Date.parse(from); t <= Date.parse(to); t += 86_400_000) {
+		const day = new Date(t).toISOString().slice(0, 10);
+		last = rates[day]?.EUR ?? last;
+		if (last != null) {
+			days.push(day);
+			values.push(last);
+		}
+	}
+	// Existing rows (the daily scrape's own rate) win.
+	const result = await sql`
+		INSERT INTO cs.fx_rates (day, usd_eur)
+		SELECT * FROM unnest(${days}::date[], ${values}::numeric[]) ON CONFLICT (day) DO NOTHING`;
+	log(
+		`FX: ${Object.keys(rates).length} ECB fixings, ${result.count} days inserted (${days[0]}..${to})`
+	);
+}
+
+/** Every pricehistory query embedded in the listing page's SSR state. */
+function pageHistories(html: string) {
+	const match = html.match(
+		/<script type="application\/json" id="valve-ssr-data"[^>]*>([\s\S]*?)<\/script>/
+	);
+	if (!match) return null;
+	const found = new Map<
+		string,
+		{ currency: number; prices: { time: number; price_median: number; purchases: number }[] }
+	>();
+	const walk = (node: unknown): void => {
+		if (typeof node === 'string') {
+			if (node.length > 2 && (node[0] === '{' || node[0] === '[')) {
+				try {
+					walk(JSON.parse(node));
+				} catch {
+					/* not JSON */
+				}
+			}
+			return;
+		}
+		if (Array.isArray(node)) return node.forEach(walk);
+		if (node && typeof node === 'object') {
+			const record = node as Record<string, unknown>;
+			const key = record.queryKey;
+			if (
+				Array.isArray(key) &&
+				key[0] === 'market' &&
+				key[1] === 'pricehistory' &&
+				key[2] === 730
+			) {
+				const data = (record.state as { data?: { ecurrency?: number; prices?: [] } } | undefined)
+					?.data;
+				if (data && Array.isArray(data.prices))
+					found.set(String(key[3]), { currency: data.ecurrency ?? 0, prices: data.prices });
+			}
+			for (const value of Object.values(record)) walk(value);
+		}
+	};
+	walk(JSON.parse(match[1]));
+	return found;
+}
+
+/** Hourly points (last month) collapse to one row per UTC day, volume-weighted. */
+function daily(prices: { time: number; price_median: number; purchases: number }[]): Day[] {
+	const byDay = new Map<string, { sum: number; weight: number; volume: number }>();
+	for (const p of prices) {
+		if (!Number.isFinite(p.price_median) || p.price_median <= 0) continue;
+		const day = new Date(p.time * 1000).toISOString().slice(0, 10);
+		const weight = Math.max(1, p.purchases || 0);
+		const entry = byDay.get(day) ?? { sum: 0, weight: 0, volume: 0 };
+		entry.sum += p.price_median * weight;
+		entry.weight += weight;
+		entry.volume += p.purchases || 0;
+		byDay.set(day, entry);
+	}
+	return [...byDay.entries()]
+		.sort(([a], [b]) => a.localeCompare(b))
+		.map(([day, e]) => ({ day, cents: Math.round((e.sum / e.weight) * 100), volume: e.volume }))
+		.filter((d) => d.cents > 0 && d.cents < 2_000_000_000);
+}
+
+async function curlPage(url: string) {
+	const proc = Bun.spawn(
+		['curl', '-sL', '--compressed', '--max-time', '60', '-A', ua, '-w', '\n%{http_code}', url],
+		{ stdout: 'pipe', stderr: 'ignore' }
+	);
+	const out = await new Response(proc.stdout).text();
+	await proc.exited;
+	const cut = out.lastIndexOf('\n');
+	return { status: Number(out.slice(cut + 1)) || 0, body: out.slice(0, cut) };
+}
+
+const kindOrder = [
+	'knife',
+	'gloves',
+	'weapon',
+	'container',
+	'agent',
+	'key',
+	'music-kit',
+	'patch',
+	'collectible',
+	'sticker',
+	'graffiti',
+	'charm',
+	'other'
+];
+
+async function steam(max: number) {
+	const currencies: Record<number, string> = { 1: 'USD', 3: 'EUR' };
+	const ids: Record<string, number> = {};
+	const idFor = async (currency: string) =>
+		(ids[currency] ??= await streamId(
+			streams.steam.source,
+			currency,
+			streams.steam.kind,
+			streams.steam.label
+		));
+	await idFor('EUR');
+	// One representative unfetched phase-less config per skin, popular kinds/skins first.
+	const queue = await sql<{ skin_id: string; item_id: number; hash: string }[]>`
+		WITH todo AS (
+			SELECT i.id, i.skin_id, i.market_hash_name, s.kind,
+				coalesce((SELECT max(w.volume) FROM cs.price_windows w
+					WHERE w.item_id = i.id AND w.source = 'skinport' AND w.span = '90d'), 0) AS vol
+			FROM cs.items i JOIN cs.skins s ON s.id = i.skin_id
+			WHERE i.phase IS NULL AND NOT EXISTS (SELECT 1 FROM cs.history_fetches f
+				WHERE f.item_id = i.id AND f.source = 'steam')
+		), skins AS (
+			SELECT skin_id, kind, sum(vol) AS vol FROM todo GROUP BY 1, 2
+		)
+		SELECT DISTINCT ON (s.vol, s.skin_id) s.skin_id, t.id AS item_id, t.market_hash_name AS hash
+		FROM skins s JOIN todo t ON t.skin_id = s.skin_id
+		ORDER BY s.vol DESC, s.skin_id, t.vol DESC, t.id`;
+	const kinds = new Map(
+		(await sql<{ id: string; kind: string }[]>`SELECT id, kind FROM cs.skins`).map((r) => [
+			r.id,
+			r.kind
+		])
+	);
+	const rank = (skin: string) => {
+		const index = kindOrder.indexOf(kinds.get(skin) ?? 'other');
+		return index < 0 ? kindOrder.length : index;
+	};
+	const ordered = queue
+		.map((row, index) => ({ ...row, index }))
+		.sort((a, b) => rank(a.skin_id) - rank(b.skin_id) || a.index - b.index);
+	log(`Steam: ${ordered.length} skins with unfetched configs`);
+	let delay = 9000;
+	let strikes = 0;
+	let requests = 0;
+	let stored = 0;
+	for (let i = 0; i < ordered.length; i++) {
+		const row = ordered[i];
+		if (requests >= max) break;
+		// Skip when an earlier page already covered this skin's representative.
+		const [done] =
+			await sql`SELECT 1 FROM cs.history_fetches WHERE item_id = ${row.item_id} AND source = 'steam'`;
+		if (done) continue;
+		const siblings = await sql<{ id: number; hash: string }[]>`
+			SELECT id, market_hash_name AS hash FROM cs.items WHERE skin_id = ${row.skin_id} AND phase IS NULL`;
+		const byHash = new Map(siblings.map((s) => [s.hash, s.id]));
+		const url = `https://steamcommunity.com/market/listings/730/${encodeURIComponent(row.hash)}`;
+		requests++;
+		// curl with a bare UA and no Accept-Language: Steam answers Bun's fetch, and any request
+		// with Accept-Language, with 429 but serves this normally.
+		let page: { status: number; body: string };
+		try {
+			page = await curlPage(url);
+		} catch (cause) {
+			log(`net error ${row.hash}: ${String(cause)}`);
+			await sleep(60_000);
+			i--; // retry the same skin
+			continue;
+		}
+		if (page.status === 429 || page.status >= 500 || page.status === 0) {
+			strikes++;
+			delay = Math.min(30_000, delay + 1000);
+			const pause = Math.min(30 * 60_000, 60_000 * strikes);
+			log(
+				`HTTP ${page.status} (strike ${strikes}), pausing ${pause / 1000}s, delay now ${delay / 1000}s`
+			);
+			await sleep(pause);
+			i--; // retry the same skin
+			continue;
+		}
+		strikes = 0;
+		if (page.status !== 200) {
+			await mark(row.item_id, 'steam', [], `HTTP ${page.status}`);
+			await sleep(delay);
+			continue;
+		}
+		const histories = pageHistories(page.body);
+		if (!histories) {
+			await mark(row.item_id, 'steam', [], 'no ssr data');
+			log(`no SSR data for ${row.hash}`);
+			await sleep(delay);
+			continue;
+		}
+		let pageRows = 0;
+		for (const [hash, history] of histories) {
+			const item =
+				byHash.get(hash) ??
+				(
+					await sql<{ id: number }[]>`SELECT id FROM cs.items WHERE market_hash_name = ${hash}
+					AND phase IS NULL`
+				)[0]?.id;
+			if (!item) continue;
+			const currency = currencies[history.currency];
+			if (!currency) {
+				await mark(item, 'steam', [], `currency ${history.currency}`);
+				continue;
+			}
+			const days = daily(history.prices);
+			if (days.length) await store(await idFor(currency), item, days);
+			await mark(item, 'steam', days);
+			pageRows += days.length;
+		}
+		if (!histories.has(row.hash)) await mark(row.item_id, 'steam', [], 'not on page');
+		stored += pageRows;
+		if (requests % 25 === 0 || requests <= 3)
+			log(
+				`#${requests} ${row.hash}: ${histories.size} configs, ${pageRows} days (total ${stored})`
+			);
+		await sleep(delay + Math.random() * 3000);
+	}
+	await sql`UPDATE cs.price_streams SET last_fetched_at = now(), last_rows = ${stored}
+		WHERE source = ${streams.steam.source} AND kind = ${streams.steam.kind}`;
+	log(`Steam done: ${requests} requests, ${stored} day rows`);
+}
+
+/** Targets for the CSFloat fetcher: phase-less configs plus Doppler phases (paint index added by
+ * the fetcher), most traded first, skipping ones already fetched. */
+async function csfloatQueue() {
+	const rows = await sql<{ item_id: number; hash: string; phase: string | null; vol: number }[]>`
+		SELECT i.id AS item_id, i.market_hash_name AS hash, i.phase,
+			coalesce((SELECT max(w.volume) FROM cs.price_windows w WHERE w.item_id = i.id
+				AND w.span = '90d'), 0)::int AS vol
+		FROM cs.items i
+		WHERE NOT EXISTS (SELECT 1 FROM cs.history_fetches f WHERE f.item_id = i.id AND f.source = 'csfloat')
+		ORDER BY vol DESC, i.id`;
+	for (const row of rows) process.stdout.write(JSON.stringify(row) + '\n');
+}
+
+async function csfloatImport() {
+	const stream = await streamId(
+		streams.csfloat.source,
+		'USD',
+		streams.csfloat.kind,
+		streams.csfloat.label
+	);
+	let items = 0;
+	let rows = 0;
+	let buffer = '';
+	const handle = async (line: string) => {
+		if (!line.trim()) return;
+		const entry = JSON.parse(line) as {
+			item_id: number;
+			error?: string;
+			graph?: { day: string; avg_price: number; count: number }[];
+		};
+		const days = (entry.graph ?? [])
+			.map((g) => ({
+				day: g.day.slice(0, 10),
+				cents: Math.round(g.avg_price),
+				volume: g.count ?? null
+			}))
+			.filter((d) => d.cents > 0 && d.cents < 2_000_000_000)
+			.sort((a, b) => a.day.localeCompare(b.day));
+		if (days.length) await store(stream, entry.item_id, days);
+		await mark(entry.item_id, 'csfloat', days, entry.error ?? null);
+		items++;
+		rows += days.length;
+	};
+	for await (const chunk of Bun.stdin.stream()) {
+		buffer += new TextDecoder().decode(chunk);
+		const lines = buffer.split('\n');
+		buffer = lines.pop() ?? '';
+		for (const line of lines) await handle(line);
+	}
+	await handle(buffer);
+	await sql`UPDATE cs.price_streams SET last_fetched_at = now(), last_rows = ${rows} WHERE id = ${stream}`;
+	log(`CSFloat import: ${items} configs, ${rows} day rows`);
+}
+
+async function status() {
+	const rows = await sql`
+		SELECT st.source, st.kind, st.currency, count(*)::int AS rows, count(DISTINCT dp.item_id)::int AS configs,
+			min(dp.day)::text AS first_day, max(dp.day)::text AS last_day
+		FROM cs.daily_prices dp JOIN cs.price_streams st ON st.id = dp.stream_id
+		WHERE st.kind LIKE '%-history' GROUP BY 1, 2, 3 ORDER BY 1`;
+	console.table(rows);
+	const [cov] = await sql`
+		WITH h AS (SELECT dp.item_id, count(DISTINCT dp.day) AS days FROM cs.daily_prices dp
+			JOIN cs.price_streams st ON st.id = dp.stream_id WHERE st.kind LIKE '%-history' GROUP BY 1)
+		SELECT (SELECT count(*) FROM cs.items)::int AS configs, count(*)::int AS with_history,
+			count(*) FILTER (WHERE days > 30)::int AS over_30_days FROM h`;
+	console.log(cov);
+	console.table(
+		await sql`SELECT source, count(*)::int AS fetched, sum(points)::int AS points,
+		count(*) FILTER (WHERE points > 0)::int AS with_points, max(fetched_at) AS last
+		FROM cs.history_fetches GROUP BY 1`
+	);
+}
+
+try {
+	if (mode === 'fx') await fx();
+	else if (mode === 'steam') await steam(Number(process.argv[3] ?? Infinity));
+	else if (mode === 'csfloat-queue') await csfloatQueue();
+	else if (mode === 'csfloat-import') await csfloatImport();
+	else if (mode === 'status') await status();
+	else throw new Error('Usage: cs-history.ts fx|steam [max]|csfloat-queue|csfloat-import|status');
+} finally {
+	await sql.end();
+}

scripts/cs-prices.ts

@@ -0,0 +1,624 @@
+/**
+ * CS2 catalog + daily prices (all configs) into cs.*. Runs inside the app container:
+ *
+ *   bun scripts/cs-prices.ts daily      catalog if older than 6 days, then today's prices
+ *   bun scripts/cs-prices.ts catalog    refresh the full catalog from ByMykel/CSGO-API
+ *   bun scripts/cs-prices.ts prices     today's prices from every bulk source
+ *
+ * One row per config per stream per UTC day (cs.daily_prices, idempotent upsert), so a rerun on
+ * the same day just refreshes that day. Bulk endpoints only, no per-item Steam scraping:
+ *   - Skinport /v1/items (EUR, lowest listing + quantity, Doppler phases via `version`)
+ *   - Skinport /v1/sales/history (EUR, 24h/7d/30d/90d sale aggregates)
+ *   - prices.csgotrader.app (USD): Steam Market average sales (24h, else 7d), CSFloat and
+ *     Buff163 lowest listings (with Doppler phases)
+ * USD→EUR comes from the ECB rate (Frankfurter) and is stored per day in cs.fx_rates.
+ */
+import postgres from 'postgres';
+import { dimensionsFromName } from '../src/lib/cs-prices/taxonomy';
+import { parseConfig, slugify } from '../src/lib/cs-prices/catalog';
+
+if (!process.env.DB_URL) throw new Error('DB_URL is required');
+const sql = postgres(process.env.DB_URL, { max: 2, onnotice: () => {} });
+const mode = process.argv[2] ?? 'daily';
+const day = new Date().toISOString().slice(0, 10);
+const ua = { 'User-Agent': 'stanrunge.dev cs-prices/2.0 (daily personal price archive)' };
+const bymykel = 'https://raw.githubusercontent.com/ByMykel/CSGO-API/main/public/api/en';
+
+type Skin = {
+	id: string;
+	slug: string;
+	name: string;
+	kind: string;
+	weapon: string | null;
+	pattern: string | null;
+	category: string | null;
+	rarity: string | null;
+	rarity_color: string | null;
+	image: string | null;
+	min_float: number | null;
+	max_float: number | null;
+	collections: string[] | null;
+	source: string;
+};
+type Item = {
+	market_hash_name: string;
+	phase: string | null;
+	skin_id: string;
+	name: string;
+	icon_url: string | null;
+	item_type: string | null;
+	wear: string | null;
+	stattrak: boolean;
+	souvenir: boolean;
+};
+
+async function getJson<T>(
+	url: string,
+	headers: Record<string, string> = {},
+	tries = 4
+): Promise<T> {
+	let last: unknown;
+	for (let attempt = 0; attempt < tries; attempt++) {
+		try {
+			const response = await fetch(url, {
+				headers: { ...ua, ...headers },
+				signal: AbortSignal.timeout(180_000)
+			});
+			if (response.ok) return (await response.json()) as T;
+			last = new Error(`HTTP ${response.status} for ${new URL(url).host}${new URL(url).pathname}`);
+			if (response.status !== 429 && response.status < 500) break;
+		} catch (cause) {
+			last = cause;
+		}
+		await new Promise((resolve) => setTimeout(resolve, 5000 * 2 ** attempt));
+	}
+	throw last;
+}
+
+const configKey = (hash: string, phase: string | null) => `${hash}\u0000${phase ?? ''}`;
+const cents = (value: unknown) =>
+	typeof value === 'number' && Number.isFinite(value) && value >= 0 && value < 21_000_000
+		? Math.round(value * 100)
+		: null;
+
+function kindFor(file: string, category?: string): string {
+	if (file === 'skins_not_grouped') {
+		if (category === 'Knives') return 'knife';
+		if (category === 'Gloves') return 'gloves';
+		return 'weapon';
+	}
+	return (
+		{
+			stickers: 'sticker',
+			crates: 'container',
+			agents: 'agent',
+			keychains: 'charm',
+			collectibles: 'collectible',
+			graffiti: 'graffiti',
+			patches: 'patch',
+			music_kits: 'music-kit',
+			keys: 'key'
+		}[file] ?? 'other'
+	);
+}
+
+/** Feed-only names (e.g. sticker slabs, highlight charms) still get a skin page. */
+function kindFromName(hash: string) {
+	const { base, starred } = parseConfig(hash);
+	const head = base.split(' | ')[0];
+	if (starred) return /Gloves|Wraps/.test(head) ? 'gloves' : 'knife';
+	if (/^Sticker Slab$|^Charm$|Highlight/.test(head) || /^Souvenir Charm/.test(hash)) return 'charm';
+	if (/^Sticker$/.test(head)) return 'sticker';
+	if (/^(Sealed )?Graffiti$/.test(head)) return 'graffiti';
+	if (/^Patch$/.test(head)) return 'patch';
+	if (/^Music Kit$/.test(head)) return 'music-kit';
+	if (/Case|Capsule|Package|Container|Collection/.test(base)) return 'container';
+	if (dimensionsFromName(hash).category === 'weapon') return 'weapon';
+	return 'other';
+}
+
+async function upsertSkins(skins: Skin[]) {
+	for (let offset = 0; offset < skins.length; offset += 2000) {
+		const chunk = skins.slice(offset, offset + 2000);
+		await sql`
+			INSERT INTO cs.skins (id, slug, name, kind, weapon, pattern, category, rarity, rarity_color,
+				image, min_float, max_float, collections, source, updated_at)
+			SELECT id, slug, name, kind, weapon, pattern, category, rarity, rarity_color, image,
+				min_float, max_float, collections, source, now()
+			FROM jsonb_to_recordset(${sql.json(chunk as never)}::jsonb) AS x(id text, slug text, name text,
+				kind text, weapon text, pattern text, category text, rarity text, rarity_color text,
+				image text, min_float real, max_float real, collections text[], source text)
+			ON CONFLICT (id) DO UPDATE SET name = EXCLUDED.name, kind = EXCLUDED.kind,
+				weapon = coalesce(EXCLUDED.weapon, cs.skins.weapon),
+				pattern = coalesce(EXCLUDED.pattern, cs.skins.pattern),
+				category = coalesce(EXCLUDED.category, cs.skins.category),
+				rarity = coalesce(EXCLUDED.rarity, cs.skins.rarity),
+				rarity_color = coalesce(EXCLUDED.rarity_color, cs.skins.rarity_color),
+				image = coalesce(EXCLUDED.image, cs.skins.image),
+				min_float = coalesce(EXCLUDED.min_float, cs.skins.min_float),
+				max_float = coalesce(EXCLUDED.max_float, cs.skins.max_float),
+				collections = coalesce(EXCLUDED.collections, cs.skins.collections),
+				source = CASE WHEN EXCLUDED.source = 'bymykel' THEN 'bymykel' ELSE cs.skins.source END,
+				updated_at = CASE WHEN EXCLUDED.source = 'bymykel' THEN now() ELSE cs.skins.updated_at END`;
+	}
+}
+
+async function upsertItems(items: Item[]) {
+	const ids = new Map<string, number>();
+	for (let offset = 0; offset < items.length; offset += 2000) {
+		const chunk = items.slice(offset, offset + 2000);
+		const rows = await sql<{ id: number; market_hash_name: string; phase: string | null }[]>`
+			INSERT INTO cs.items (market_hash_name, phase, skin_id, name, icon_url, item_type, wear,
+				stattrak, souvenir)
+			SELECT market_hash_name, phase, skin_id, name, icon_url, item_type, wear,
+				coalesce(stattrak, false), coalesce(souvenir, false)
+			FROM jsonb_to_recordset(${sql.json(chunk as never)}::jsonb) AS x(market_hash_name text,
+				phase text, skin_id text, name text, icon_url text, item_type text, wear text,
+				stattrak boolean, souvenir boolean)
+			ON CONFLICT (market_hash_name, (coalesce(phase, ''))) DO UPDATE SET
+				skin_id = EXCLUDED.skin_id,
+				name = EXCLUDED.name,
+				icon_url = coalesce(EXCLUDED.icon_url, cs.items.icon_url),
+				item_type = coalesce(EXCLUDED.item_type, cs.items.item_type),
+				wear = EXCLUDED.wear, stattrak = EXCLUDED.stattrak, souvenir = EXCLUDED.souvenir,
+				last_seen_at = now()
+			RETURNING id, market_hash_name, phase`;
+		for (const row of rows) ids.set(configKey(row.market_hash_name, row.phase), row.id);
+		// Facets for the /projects/cs-prices compare explorer.
+		const dims: { item_id: number; key: string; value: string }[] = [];
+		const byKey = new Map(
+			chunk.map((item) => [configKey(item.market_hash_name, item.phase), item])
+		);
+		for (const row of rows) {
+			const item = byKey.get(configKey(row.market_hash_name, row.phase));
+			const facets = dimensionsFromName(row.market_hash_name);
+			if (row.phase) facets.phase = row.phase;
+			if (item?.item_type) facets.steam_type = item.item_type;
+			for (const [key, value] of Object.entries(facets))
+				if (value) dims.push({ item_id: row.id, key, value });
+		}
+		if (dims.length)
+			await sql`
+				INSERT INTO cs.item_dimensions (item_id, key, value)
+				SELECT item_id, key, value FROM jsonb_to_recordset(${sql.json(dims as never)}::jsonb)
+					AS x(item_id int, key text, value text)
+				ON CONFLICT (item_id, key) DO UPDATE SET value = EXCLUDED.value`;
+	}
+	return ids;
+}
+
+type Raw = Record<string, unknown> & {
+	id: string;
+	name: string;
+	market_hash_name?: string | null;
+	image?: string | null;
+	phase?: string | null;
+	skin_id?: string;
+	weapon?: { name?: string } | null;
+	pattern?: { name?: string } | null;
+	category?: { name?: string } | null;
+	rarity?: { name?: string; color?: string } | null;
+	min_float?: number | null;
+	max_float?: number | null;
+	collections?: { name?: string }[] | null;
+	type?: string | null;
+};
+
+async function catalog() {
+	const files = [
+		'skins_not_grouped',
+		'stickers',
+		'crates',
+		'agents',
+		'keychains',
+		'collectibles',
+		'graffiti',
+		'patches',
+		'music_kits',
+		'keys'
+	];
+	const skins = new Map<string, Skin>();
+	const items = new Map<string, Item>();
+	const slugOwner = new Map<string, string>();
+	const existing = await sql<{ id: string; slug: string }[]>`SELECT id, slug FROM cs.skins`;
+	for (const row of existing) slugOwner.set(row.slug, row.id);
+	const skinFor = (base: string) => {
+		// The grouping key is the base name; the id stays stable once assigned.
+		const slug = slugify(base);
+		return slugOwner.get(slug) ?? slug;
+	};
+	for (const file of files) {
+		const rows = await getJson<Raw[]>(`${bymykel}/${file}.json`);
+		console.log(`ByMykel ${file}: ${rows.length}`);
+		for (const raw of rows) {
+			if (!raw.market_hash_name) continue;
+			const config = parseConfig(raw.market_hash_name);
+			const kind = kindFor(file, raw.category?.name);
+			const id = skinFor(config.base);
+			slugOwner.set(slugify(config.base), id);
+			const current = skins.get(id);
+			const preferImage = !raw.phase || raw.phase === 'Phase 2';
+			if (!current)
+				skins.set(id, {
+					id,
+					slug: slugify(config.base),
+					name: config.display,
+					kind,
+					weapon: raw.weapon?.name ?? null,
+					pattern: raw.pattern?.name ?? null,
+					category: raw.category?.name ?? raw.type ?? null,
+					rarity: raw.rarity?.name ?? null,
+					rarity_color: raw.rarity?.color ?? null,
+					image: preferImage ? (raw.image ?? null) : null,
+					min_float: raw.min_float ?? null,
+					max_float: raw.max_float ?? null,
+					collections: raw.collections?.map((c) => c.name ?? '').filter(Boolean) ?? null,
+					source: 'bymykel'
+				});
+			else if (!current.image && preferImage && raw.image) current.image = raw.image;
+			const add = (phase: string | null) =>
+				items.set(configKey(raw.market_hash_name!, phase), {
+					market_hash_name: raw.market_hash_name!,
+					phase,
+					skin_id: id,
+					name: phase ? `${raw.market_hash_name} - ${phase}` : raw.market_hash_name!,
+					icon_url: raw.image ?? null,
+					item_type: raw.category?.name ?? raw.type ?? kind,
+					wear: config.wear,
+					stattrak: config.stattrak,
+					souvenir: config.souvenir
+				});
+			add(raw.phase ?? null);
+			// The phase-less listing carries Steam's and other phase-blind prices.
+			if (raw.phase && !items.has(configKey(raw.market_hash_name, null))) add(null);
+		}
+	}
+	const itemList = [...items.values()];
+	for (const skin of skins.values())
+		if (!skin.image)
+			skin.image =
+				itemList.find((item) => item.skin_id === skin.id && item.icon_url)?.icon_url ?? null;
+	// Phase-less rows of Doppler listings should not show one phase's image.
+	for (const item of items.values())
+		if (!item.phase && /Doppler/.test(item.name)) item.icon_url = null;
+	await upsertSkins([...skins.values()]);
+	const ids = await upsertItems([...items.values()]);
+	// Older Steam-only rows: link them to a skin by name.
+	await sql`UPDATE cs.items i SET skin_id = s.id FROM cs.skins s
+		WHERE i.skin_id IS NULL AND s.slug = regexp_replace(regexp_replace(lower(regexp_replace(
+			regexp_replace(regexp_replace(i.market_hash_name, '^★ ', ''), '^(StatTrak™ |Souvenir )', ''),
+			' \\((Factory New|Minimal Wear|Field-Tested|Well-Worn|Battle-Scarred)\\)$', '')),
+			'[^a-z0-9]+', '-', 'g'), '^-+|-+$', '', 'g')`;
+	console.log(`Catalog: ${skins.size} skins, ${ids.size} configs`);
+}
+
+type Row = { hash: string; phase: string | null; cents: number; volume: number | null };
+
+async function ensureItems(rows: Row[]) {
+	const known = new Map<string, number>();
+	for (const row of await sql<{ id: number; market_hash_name: string; phase: string | null }[]>`
+		SELECT id, market_hash_name, phase FROM cs.items`)
+		known.set(configKey(row.market_hash_name, row.phase), row.id);
+	const missing = new Map<string, Item>();
+	const newSkins = new Map<string, Skin>();
+	const slugs = new Map(
+		(await sql<{ id: string; slug: string }[]>`SELECT id, slug FROM cs.skins`).map((r) => [
+			r.slug,
+			r.id
+		])
+	);
+	for (const row of rows) {
+		const key = configKey(row.hash, row.phase);
+		if (known.has(key) || missing.has(key)) continue;
+		// Untranslated tokens and truncated names in the feeds are not real listings.
+		if (/^#|\|\s*$|^\s*$/.test(row.hash) || row.hash.length > 200) continue;
+		const config = parseConfig(row.hash);
+		const slug = slugify(config.base);
+		let skinId = slugs.get(slug);
+		if (!skinId) {
+			skinId = slug;
+			slugs.set(slug, skinId);
+			newSkins.set(skinId, {
+				id: skinId,
+				slug,
+				name: config.display,
+				kind: kindFromName(row.hash),
+				weapon: null,
+				pattern: null,
+				category: null,
+				rarity: null,
+				rarity_color: null,
+				image: null,
+				min_float: null,
+				max_float: null,
+				collections: null,
+				source: 'market'
+			});
+		}
+		missing.set(key, {
+			market_hash_name: row.hash,
+			phase: row.phase,
+			skin_id: skinId,
+			name: row.phase ? `${row.hash} - ${row.phase}` : row.hash,
+			icon_url: null,
+			item_type: null,
+			wear: config.wear,
+			stattrak: config.stattrak,
+			souvenir: config.souvenir
+		});
+	}
+	if (newSkins.size) await upsertSkins([...newSkins.values()]);
+	if (missing.size) {
+		for (const [key, id] of await upsertItems([...missing.values()])) known.set(key, id);
+		console.log(`New configs from price feeds: ${missing.size} (${newSkins.size} new skins)`);
+	}
+	return known;
+}
+
+async function streamId(source: string, currency: string, kind: string) {
+	const [row] = await sql<{ id: number }[]>`
+		INSERT INTO cs.price_streams (source, currency, kind) VALUES (${source}, ${currency}, ${kind})
+		ON CONFLICT (source, currency, kind) DO UPDATE SET source = EXCLUDED.source RETURNING id`;
+	return row.id;
+}
+
+async function saveDaily(source: string, currency: string, kind: string, rows: Row[]) {
+	const stream = await streamId(source, currency, kind);
+	const ids = await ensureItems(rows);
+	const dedup = new Map<number, Row>();
+	for (const row of rows) {
+		const id = ids.get(configKey(row.hash, row.phase));
+		if (id) dedup.set(id, row);
+	}
+	const entries = [...dedup.entries()];
+	for (let offset = 0; offset < entries.length; offset += 5000) {
+		const chunk = entries.slice(offset, offset + 5000);
+		await sql`
+			INSERT INTO cs.daily_prices (item_id, stream_id, day, price_cents, volume)
+			SELECT item_id, ${stream}::smallint, ${day}::date, price_cents, volume
+			FROM unnest(${chunk.map(([id]) => id)}::int[], ${chunk.map(([, r]) => r.cents)}::int[],
+				${chunk.map(([, r]) => r.volume)}::int[]) AS x(item_id, price_cents, volume)
+			ON CONFLICT (item_id, stream_id, day) DO UPDATE SET
+				price_cents = EXCLUDED.price_cents, volume = EXCLUDED.volume`;
+	}
+	await sql`UPDATE cs.price_streams SET last_fetched_at = now(), last_rows = ${entries.length},
+		last_error = NULL WHERE id = ${stream}`;
+	console.log(`${source} ${kind}: ${entries.length} configs for ${day}`);
+	return ids;
+}
+
+type Window = {
+	item: number;
+	span: string;
+	median: number | null;
+	avg: number | null;
+	min: number | null;
+	max: number | null;
+	volume: number | null;
+};
+async function saveWindows(source: string, currency: string, windows: Window[]) {
+	for (let offset = 0; offset < windows.length; offset += 5000) {
+		const chunk = windows.slice(offset, offset + 5000);
+		await sql`
+			INSERT INTO cs.price_windows (item_id, source, currency, span, median_cents, avg_cents,
+				min_cents, max_cents, volume, updated_at)
+			SELECT item_id, ${source}, ${currency}, span, median_cents, avg_cents, min_cents, max_cents,
+				volume, now()
+			FROM unnest(${chunk.map((w) => w.item)}::int[], ${chunk.map((w) => w.span)}::text[],
+				${chunk.map((w) => w.median)}::int[], ${chunk.map((w) => w.avg)}::int[],
+				${chunk.map((w) => w.min)}::int[], ${chunk.map((w) => w.max)}::int[],
+				${chunk.map((w) => w.volume)}::int[])
+				AS x(item_id, span, median_cents, avg_cents, min_cents, max_cents, volume)
+			ON CONFLICT (item_id, source, span) DO UPDATE SET median_cents = EXCLUDED.median_cents,
+				avg_cents = EXCLUDED.avg_cents, min_cents = EXCLUDED.min_cents,
+				max_cents = EXCLUDED.max_cents, volume = EXCLUDED.volume, updated_at = now()`;
+	}
+}
+
+async function fx() {
+	for (const url of [
+		'https://api.frankfurter.dev/v1/latest?base=USD&symbols=EUR',
+		'https://api.frankfurter.app/latest?from=USD&to=EUR'
+	]) {
+		try {
+			const data = await getJson<{ rates?: { EUR?: number } }>(url, {}, 2);
+			if (data.rates?.EUR) {
+				await sql`INSERT INTO cs.fx_rates (day, usd_eur) VALUES (${day}, ${data.rates.EUR})
+					ON CONFLICT (day) DO UPDATE SET usd_eur = EXCLUDED.usd_eur`;
+				console.log(`FX USD→EUR ${data.rates.EUR}`);
+				return;
+			}
+		} catch (cause) {
+			console.warn(`FX ${new URL(url).host}: ${String(cause)}`);
+		}
+	}
+}
+
+async function guarded(
+	source: string,
+	currency: string,
+	kinds: string[],
+	run: () => Promise<void>
+) {
+	try {
+		await run();
+		return true;
+	} catch (cause) {
+		console.error(`${source} failed: ${String(cause)}`);
+		for (const kind of kinds)
+			await sql`UPDATE cs.price_streams SET last_error = ${String(cause).slice(0, 500)}
+				WHERE source = ${source} AND currency = ${currency} AND kind = ${kind}`;
+		return false;
+	}
+}
+
+const spans = { last_24_hours: '24h', last_7_days: '7d', last_30_days: '30d', last_90_days: '90d' };
+
+async function prices() {
+	await fx();
+	const results: boolean[] = [];
+	const br = { 'Accept-Encoding': 'br' };
+	results.push(
+		await guarded('skinport', 'EUR', ['lowest-listing'], async () => {
+			const items = await getJson<
+				{
+					market_hash_name: string;
+					version: string | null;
+					min_price: number | null;
+					quantity: number;
+				}[]
+			>('https://api.skinport.com/v1/items?app_id=730&currency=EUR', br);
+			await saveDaily(
+				'skinport',
+				'EUR',
+				'lowest-listing',
+				items.flatMap((item) => {
+					const value = cents(item.min_price);
+					return value == null
+						? []
+						: [
+								{
+									hash: item.market_hash_name,
+									phase: item.version || null,
+									cents: value,
+									volume: item.quantity ?? null
+								}
+							];
+				})
+			);
+		})
+	);
+	results.push(
+		await guarded('skinport', 'EUR', ['sale-median-24h'], async () => {
+			type Agg = {
+				min: number | null;
+				max: number | null;
+				avg: number | null;
+				median: number | null;
+				volume: number;
+			};
+			const history = await getJson<
+				(Record<string, Agg> & { market_hash_name: string; version: string | null })[]
+			>('https://api.skinport.com/v1/sales/history?app_id=730&currency=EUR', br);
+			const rows: Row[] = [];
+			for (const entry of history) {
+				const day24 = entry.last_24_hours;
+				const value = cents(day24?.median);
+				if (value != null)
+					rows.push({
+						hash: entry.market_hash_name,
+						phase: entry.version || null,
+						cents: value,
+						volume: day24.volume
+					});
+			}
+			const ids = await saveDaily('skinport', 'EUR', 'sale-median-24h', rows);
+			const windows: Window[] = [];
+			const allIds = await ensureItems(
+				history.map((e) => ({
+					hash: e.market_hash_name,
+					phase: e.version || null,
+					cents: 0,
+					volume: 0
+				}))
+			);
+			for (const entry of history) {
+				const item = (ids.get(configKey(entry.market_hash_name, entry.version || null)) ??
+					allIds.get(configKey(entry.market_hash_name, entry.version || null)))!;
+				if (!item) continue;
+				for (const [field, span] of Object.entries(spans)) {
+					const agg = entry[field];
+					if (!agg || !agg.volume) continue;
+					windows.push({
+						item,
+						span,
+						median: cents(agg.median),
+						avg: cents(agg.avg),
+						min: cents(agg.min),
+						max: cents(agg.max),
+						volume: agg.volume
+					});
+				}
+			}
+			await saveWindows('skinport', 'EUR', windows);
+			console.log(`skinport windows: ${windows.length}`);
+		})
+	);
+	results.push(
+		await guarded('steam-market', 'USD', ['sale-avg'], async () => {
+			const steam = await getJson<Record<string, Record<string, number | null>>>(
+				'https://prices.csgotrader.app/latest/steam.json'
+			);
+			const rows: Row[] = [];
+			for (const [hash, value] of Object.entries(steam)) {
+				// Latest average sale price: the last 24 hours, else the last 7 days.
+				const price = cents(value?.last_24h ?? value?.last_7d);
+				if (price != null) rows.push({ hash, phase: null, cents: price, volume: null });
+			}
+			const ids = await saveDaily('steam-market', 'USD', 'sale-avg', rows);
+			const all = await ensureItems(
+				Object.keys(steam).map((hash) => ({ hash, phase: null, cents: 0, volume: 0 }))
+			);
+			const windows: Window[] = [];
+			for (const [hash, value] of Object.entries(steam)) {
+				const item = ids.get(configKey(hash, null)) ?? all.get(configKey(hash, null));
+				if (!item || !value) continue;
+				for (const span of ['24h', '7d', '30d', '90d']) {
+					const avg = cents(value[`last_${span}`]);
+					if (avg != null)
+						windows.push({ item, span, median: null, avg, min: null, max: null, volume: null });
+				}
+			}
+			await saveWindows('steam-market', 'USD', windows);
+		})
+	);
+	for (const [source, file] of [
+		['csfloat', 'csfloat'],
+		['buff163', 'buff163']
+	] as const) {
+		results.push(
+			await guarded(source, 'USD', ['lowest-listing'], async () => {
+				type Entry = {
+					price?: number;
+					starting_at?: { price?: number | null; doppler?: Record<string, number> } | null;
+					doppler?: Record<string, number>;
+				};
+				const feed = await getJson<Record<string, Entry>>(
+					`https://prices.csgotrader.app/latest/${file}.json`
+				);
+				const rows: Row[] = [];
+				for (const [hash, entry] of Object.entries(feed)) {
+					const base = cents(entry?.starting_at?.price ?? entry?.price);
+					if (base != null) rows.push({ hash, phase: null, cents: base, volume: null });
+					const phases = entry?.starting_at?.doppler ?? entry?.doppler;
+					for (const [phase, value] of Object.entries(phases ?? {})) {
+						const price = cents(value);
+						if (price != null) rows.push({ hash, phase, cents: price, volume: null });
+					}
+				}
+				await saveDaily(source, 'USD', 'lowest-listing', rows);
+			})
+		);
+	}
+	if (!results.some(Boolean)) throw new Error('Every price source failed');
+	const [summary] = await sql<{ rows: number; items: number }[]>`
+		SELECT count(*)::int AS rows, count(DISTINCT item_id)::int AS items
+		FROM cs.daily_prices WHERE day = ${day}`;
+	console.log(`Today (${day}): ${summary.rows} price rows across ${summary.items} configs`);
+}
+
+try {
+	if (mode === 'catalog') await catalog();
+	else if (mode === 'prices') await prices();
+	else if (mode === 'daily') {
+		const [state] = await sql<{ fresh: boolean }[]>`
+			SELECT coalesce(max(updated_at) > now() - interval '6 days', false) AS fresh
+			FROM cs.skins WHERE source = 'bymykel'`;
+		if (!state.fresh) await catalog();
+		await prices();
+	} else throw new Error('Usage: cs-prices.ts daily|catalog|prices');
+	await sql`ANALYZE cs.items`;
+	await sql`ANALYZE cs.daily_prices`;
+} finally {
+	await sql.end();
+}

scripts/deploy-preflight.ts

@@ -188,8 +188,9 @@ try {
 	if (Number(stats.tables) !== STATS_TABLES || Number(stats.app_rw) !== STATS_TABLES)
 		throw new Error(`stats schema tables/grants are wrong: ${JSON.stringify(stats)}`);
 	// Private-by-default AI tracker (news public in the app; bots and usage owner-only): app role
-	// read/write, personal_ro none. 3 = news_items, bot_status, usage_entries.
-	const AI_TABLES = 3;
+	// read/write, personal_ro none. 5 = news_items, bot_status, usage_entries,
+	// provider_setup_providers, provider_setup_entries (setup tab, owner-only).
+	const AI_TABLES = 5;
 	const [ai] = await client`
 		select
 			count(*) filter (where has_table_privilege(c.oid, 'select, insert, update, delete')) as app_rw,
@@ -286,6 +287,33 @@ try {
 		notes.public_usage
 	)
 		throw new Error(`notes schema tables/grants are wrong: ${JSON.stringify(notes)}`);
+	// Math (the Napkin tracker, private by default): app role read/write, personal_ro none.
+	// 4 = parts, chapters, sections, activity; the migration seeds all 100 chapters.
+	const MATH_TABLES = 4;
+	const [math] = await client`
+		select
+			count(*) filter (where has_table_privilege(c.oid, 'select, insert, update, delete')) as app_rw,
+			count(*) filter (
+				where exists (
+					select 1 from aclexplode(c.relacl) a join pg_roles r on r.oid = a.grantee
+					where r.rolname = 'personal_ro'
+				)
+			) as ro_read,
+			count(*) as tables,
+			has_schema_privilege('public', 'math', 'usage') as public_usage
+		from pg_class c join pg_namespace n on n.oid = c.relnamespace
+		where n.nspname = 'math' and c.relkind = 'r'
+	`;
+	if (
+		Number(math.tables) !== MATH_TABLES ||
+		Number(math.app_rw) !== MATH_TABLES ||
+		Number(math.ro_read) !== 0 ||
+		math.public_usage
+	)
+		throw new Error(`math schema tables/grants are wrong: ${JSON.stringify(math)}`);
+	const [{ n: mathChapters }] = await client`select count(*)::int as n from math.chapters`;
+	if (mathChapters !== 100)
+		throw new Error(`math.chapters has ${mathChapters} rows, expected the 100 Napkin chapters`);
 	// Energy tracker reads the ned-collector tables (SELECT only).
 	const [energy] = await client`
 		select count(*) as hours, max(valid_from) as latest from energy.ned_utilization
@@ -295,7 +323,7 @@ try {
 	if (!Number(energy.hours))
 		console.warn('Warning: energy.ned_utilization has no hourly data from the last 7 days');
 	console.log(
-		`health: ${health.tables} tables, tasks: ${tasks.tables} tables, groceries: ${groceries.tables} tables, stats: ${stats.tables} tables, ai: ${ai.tables} tables, movies: ${movies.tables} tables, worldtodo: ${worldtodo.tables} tables (${worldtodoTasks} tasks), notes: ${notes.tables} tables, app read/write, personal_ro none; energy: ${energy.hours} hourly rows, latest ${energy.latest ? new Date(energy.latest).toISOString() : 'none'}`
+		`health: ${health.tables} tables, tasks: ${tasks.tables} tables, groceries: ${groceries.tables} tables, stats: ${stats.tables} tables, ai: ${ai.tables} tables, movies: ${movies.tables} tables, worldtodo: ${worldtodo.tables} tables (${worldtodoTasks} tasks), notes: ${notes.tables} tables, math: ${math.tables} tables (${mathChapters} chapters), app read/write, personal_ro none; energy: ${energy.hours} hourly rows, latest ${energy.latest ? new Date(energy.latest).toISOString() : 'none'}`
 	);
 	const [catalog] = await client`
 		select

scripts/ingest-cs-prices.ts

@@ -1,5 +1,6 @@
 /**
- * Steam Community Market ingestion. Run after db:migrate:cs-prices.
+ * Legacy Steam Community Market ingestion (per item, rate limited). The daily archive is
+ * scripts/cs-prices.ts; this stays for one-off Steam history imports with a logged-in session.
  *
  * bun scripts/ingest-cs-prices.ts catalog [--limit=500] [--start=0]
  * STEAM_SESSIONID=... STEAM_LOGIN_SECURE=... bun scripts/ingest-cs-prices.ts history [--limit=100] [--start=0]
@@ -87,10 +88,10 @@ async function itemId(
 	const [row] = await sql<{ id: number }[]>`
 		INSERT INTO cs.items (market_hash_name, name, icon_url, item_type)
 		VALUES (${name}, ${displayName}, ${iconUrl ?? null}, ${itemType ?? null})
-		ON CONFLICT (market_hash_name) DO UPDATE SET
+		ON CONFLICT (market_hash_name, (coalesce(phase, ''))) DO UPDATE SET
 			name = EXCLUDED.name,
-			icon_url = COALESCE(EXCLUDED.icon_url, cs_market_items.icon_url),
-			item_type = COALESCE(EXCLUDED.item_type, cs_market_items.item_type),
+			icon_url = COALESCE(EXCLUDED.icon_url, cs.items.icon_url),
+			item_type = COALESCE(EXCLUDED.item_type, cs.items.item_type),
 			last_seen_at = now()
 		RETURNING id`;
 	const inferred = dimensionsFromName(name);
@@ -281,7 +282,7 @@ try {
 	else if (mode === 'history') await history();
 	else if (mode === 'import' && process.argv[3]) await importFile(process.argv[3]);
 	else throw new Error('Usage: ingest-cs-prices.ts catalog|history|import <file>');
-	await sql`ANALYZE cs_market_items, cs_item_dimensions, cs_price_observations`;
+	await sql`ANALYZE cs.items, cs.item_dimensions, cs.price_observations`;
 } finally {
 	await sql.end();
 }

scripts/revolut-import.ts

@@ -15,6 +15,8 @@
 //                           category 'transfer' (e.g. Personal <-> Joint legs)
 //     --tag-matched-transfers      with --transfer-pattern: also set category 'transfer' on the
 //                           existing tracker rows those statement rows matched
+//     Interest/dividend payouts (src/lib/server/investment-income.ts) get category 'interest' /
+//     'dividend' on insert; matched existing rows get it only when their category is empty.
 //     --apply               write (needs a money-schema backup in ~/backups from the last 2 hours)
 //     --drop-start-balance  with --apply: delete the account's "Start balance" row(s), only if the
 //                           statement opens at €0 and, after the import, the only difference
@@ -38,6 +40,7 @@ import {
 	planImport,
 	rowsFromTable,
 	selectRows,
+	statementCategory,
 	statementExternalId,
 	type StatementRow,
 	type TrackerRow
@@ -293,12 +296,23 @@ try {
 					insert into money.transactions
 						(user_id, account_id, date, value_date, description, amount_cents, external_id, source, booking_status, category, raw)
 					values (${account.user_id}, ${account.id}, ${r.date}, ${r.startedDate}, ${r.description.slice(0, 500)},
-						${r.amountCents}, ${statementExternalId(r, hash)}, 'csv', 'BOOK', ${isTransfer(r) ? 'transfer' : null},
+						${r.amountCents}, ${statementExternalId(r, hash)}, 'csv', 'BOOK', ${isTransfer(r) ? 'transfer' : statementCategory(r)},
 						${q.json({ revolut: { type: r.type, product: r.product, started: r.startedDate, completed: r.completedAt, description: r.description, fee_cents: r.feeCents, currency: r.currency, balance_cents: r.balanceCents, file_line: r.line } })})
 					on conflict do nothing`;
 				inserted += res.count;
 			}
 			console.log(`Inserted ${inserted} rows into ${account.name}.`);
+			// Interest/dividend payouts that matched an existing row: tag it, unless it already
+			// has a category (hand-set categories are never overwritten).
+			let income = 0;
+			for (const d of plan.duplicates) {
+				const category = isTransfer(d.row) ? null : statementCategory(d.row);
+				if (!category) continue;
+				const res = await q`update money.transactions set category = ${category}
+					where id = ${d.match.id} and account_id = ${account.id} and category is null`;
+				income += res.count;
+			}
+			if (income) console.log(`Tagged ${income} existing interest/dividend rows.`);
 			if (transferRe && flag('--tag-matched-transfers')) {
 				const ids = plan.duplicates.filter((d) => isTransfer(d.row)).map((d) => d.match.id);
 				const tagged = ids.length

src/lib/cs-prices/PriceChart.svelte

@@ -2,13 +2,30 @@
 	import { onMount } from 'svelte';
 	import type { ECharts } from 'echarts/core';
 
-	export type PriceSeries = { key: string; name: string; points: [number, number][] };
-	let { series, kind, currency }: { series: PriceSeries[]; kind: string; currency: string } =
-		$props();
+	export type PriceSeries = {
+		key: string;
+		name: string;
+		points: [number, number][];
+		color?: string;
+		dashed?: boolean;
+	};
+	let {
+		series,
+		kind,
+		currency,
+		height = 'min(62vh, 560px)',
+		zoom = true
+	}: {
+		series: PriceSeries[];
+		kind: string;
+		currency: string;
+		height?: string;
+		zoom?: boolean;
+	} = $props();
 	let element: HTMLDivElement;
 	let chart: ECharts | undefined;
 	let ready = $state(false);
-	let money = $derived(new Intl.NumberFormat('en-US', { style: 'currency', currency }));
+	let money = $derived(new Intl.NumberFormat('nl-NL', { style: 'currency', currency }));
 	const escapeHtml = (value: string) =>
 		value.replace(
 			/[&<>"']/g,
@@ -22,15 +39,53 @@
 		const foreground = style.getPropertyValue('--site-text').trim();
 		const muted = style.getPropertyValue('--site-muted').trim();
 		const border = style.getPropertyValue('--site-border').trim();
+		const dark = style.getPropertyValue('--site-bg').trim() === '#000';
+		const many = series.length > 100;
+		const legend = series.length > 1 && series.length <= 12;
+		const surface = style.getPropertyValue('--site-surface').trim();
+		// A few days of daily data would otherwise be stretched into hour ticks; pad to a week.
+		let first = Infinity;
+		let last = -Infinity;
+		for (const line of series)
+			for (const [t] of line.points) {
+				if (t < first) first = t;
+				if (t > last) last = t;
+			}
+		const day = 86_400_000;
+		const short = Number.isFinite(first) && last - first < 7 * day;
+		const pad = short ? (7 * day - (last - first)) / 2 : 0;
 		chart.setOption(
 			{
 				animation: false,
 				backgroundColor: 'transparent',
-				grid: { left: 78, right: 20, top: 28, bottom: 72 },
+				grid: {
+					left: 64,
+					right: 14,
+					top: legend ? 40 : 20,
+					bottom: zoom ? 64 : 28,
+					containLabel: false
+				},
+				legend: legend
+					? {
+							top: 0,
+							left: 0,
+							icon: 'roundRect',
+							itemWidth: 10,
+							itemHeight: 4,
+							textStyle: { color: muted, fontSize: 11 }
+						}
+					: { show: false },
 				xAxis: {
 					type: 'time',
+					min: short ? first - pad : undefined,
+					max: short ? last + pad : undefined,
+					minInterval: day,
 					axisLine: { lineStyle: { color: border } },
-					axisLabel: { color: muted },
+					axisLabel: {
+						color: muted,
+						hideOverlap: true,
+						formatter: { year: '{yyyy}', month: '{MMM}', day: '{d} {MMM}', hour: '{d} {MMM}' }
+					},
 					splitLine: { show: false }
 				},
 				yAxis: {
@@ -39,44 +94,71 @@
 					axisLabel: { color: muted, formatter: (value: number) => money.format(value / 100) },
 					splitLine: { lineStyle: { color: border } }
 				},
-				dataZoom: [
+				dataZoom: zoom
+					? [
 							{ type: 'inside' },
 							{
 								type: 'slider',
-						bottom: 12,
+								bottom: 10,
 								height: 18,
 								borderColor: border,
 								textStyle: { color: muted },
 								fillerColor: 'rgba(127,127,127,.15)'
 							}
-				],
-				tooltip:
-					series.length > 100
+						]
+					: [],
+				tooltip: many
 					? { show: false }
+					: legend || series.length === 1
+						? {
+								trigger: 'axis',
+								backgroundColor: surface,
+								borderColor: border,
+								textStyle: { color: foreground, fontSize: 12 },
+								formatter: (
+									params: {
+										seriesName: string;
+										value: [number, number];
+										color: string;
+									}[]
+								) =>
+									params.length
+										? `${new Date(params[0].value[0]).toLocaleDateString('nl-NL')}<br>` +
+											params
+												.map(
+													(p) =>
+														`<span style="color:${p.color}">●</span> ${escapeHtml(p.seriesName)} · <b>${money.format(p.value[1] / 100)}</b>`
+												)
+												.join('<br>')
+										: ''
+							}
 						: {
 								trigger: 'item',
-								backgroundColor: style.getPropertyValue('--site-surface').trim(),
+								backgroundColor: surface,
 								borderColor: border,
 								textStyle: { color: foreground },
 								formatter: (params: { seriesName: string; value: [number, number] }) =>
-									`${escapeHtml(params.seriesName)}<br>${new Date(params.value[0]).toLocaleDateString()} · ${money.format(params.value[1] / 100)}`
+									`${escapeHtml(params.seriesName)}<br>${new Date(params.value[0]).toLocaleDateString('nl-NL')} · ${money.format(params.value[1] / 100)}`
 							},
 				series: series.map((item, index) => ({
 					name: item.name,
 					type: 'line',
 					data: item.points,
-					showSymbol: false,
+					// Few points (a new archive, or one sweep) would be invisible as a bare line.
+					showSymbol: item.points.length <= 60,
+					symbolSize: item.points.length <= 3 ? 7 : 4,
 					connectNulls: false,
-					silent: series.length > 100,
+					silent: many,
 					lineStyle: {
-						width: series.length > 100 ? 0.7 : 1.8,
-						opacity: series.length > 100 ? 0.42 : 0.9
+						width: many ? 0.7 : 1.8,
+						opacity: many ? 0.42 : 0.9,
+						type: item.dashed ? 'dashed' : 'solid'
 					},
 					itemStyle: {
-						color: `hsl(${(index * 137.508) % 360} 65% ${style.getPropertyValue('--site-bg').trim() === '#000' ? '68%' : '38%'})`
+						color: item.color ?? `hsl(${(index * 137.508) % 360} 65% ${dark ? '68%' : '38%'})`
 					},
 					emphasis: { focus: 'series', lineStyle: { width: 3, opacity: 1 } },
-					large: true
+					large: many
 				}))
 			},
 			true
@@ -90,7 +172,7 @@
 		import('echarts/core').then(async (echarts) => {
 			const [
 				{ LineChart },
-				{ GridComponent, TooltipComponent, DataZoomComponent },
+				{ GridComponent, TooltipComponent, DataZoomComponent, LegendComponent },
 				{ CanvasRenderer }
 			] = await Promise.all([
 				import('echarts/charts'),
@@ -98,7 +180,14 @@
 				import('echarts/renderers')
 			]);
 			if (disposed) return;
-			echarts.use([LineChart, GridComponent, TooltipComponent, DataZoomComponent, CanvasRenderer]);
+			echarts.use([
+				LineChart,
+				GridComponent,
+				TooltipComponent,
+				DataZoomComponent,
+				LegendComponent,
+				CanvasRenderer
+			]);
 			chart = echarts.init(element, undefined, { renderer: 'canvas' });
 			ready = true;
 			update();
@@ -107,7 +196,7 @@
 			theme = new MutationObserver(update);
 			theme.observe(document.documentElement, {
 				attributes: true,
-				attributeFilter: ['data-theme']
+				attributeFilter: ['data-theme', 'class']
 			});
 		});
 		return () => {
@@ -118,12 +207,16 @@
 		};
 	});
 	$effect(() => {
+		// Track the props so a new selection redraws.
+		void series;
+		void currency;
 		if (ready) update();
 	});
 </script>
 
 <div
 	class="chart"
+	style:height
 	bind:this={element}
 	role="img"
 	aria-label={`${series.length} ${kind} price series chart`}
@@ -132,7 +225,6 @@
 <style>
 	.chart {
 		width: 100%;
-		height: min(62vh, 560px);
-		min-height: 320px;
+		min-height: 260px;
 	}
 </style>

src/lib/cs-prices/catalog.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from 'vitest';
+import { configRank, parseConfig, slugify } from './catalog';
+
+describe('parseConfig', () => {
+	it('splits knives, StatTrak and wear', () => {
+		expect(parseConfig('★ StatTrak™ Karambit | Doppler (Factory New)')).toEqual({
+			starred: true,
+			stattrak: true,
+			souvenir: false,
+			wear: 'Factory New',
+			base: 'Karambit | Doppler',
+			display: '★ Karambit | Doppler'
+		});
+	});
+	it('handles souvenirs and wearless items', () => {
+		expect(parseConfig('Souvenir AWP | Dragon Lore (Field-Tested)').souvenir).toBe(true);
+		expect(parseConfig('Souvenir AWP | Dragon Lore (Field-Tested)').base).toBe('AWP | Dragon Lore');
+		expect(parseConfig('Sticker | Heroic (Holo) | Rio 2022').base).toBe(
+			'Sticker | Heroic (Holo) | Rio 2022'
+		);
+		expect(parseConfig('Paris 2023 Mirage Souvenir Package').souvenir).toBe(false);
+		expect(parseConfig('StatTrak™ Music Kit | Daniel Sadowski, Crimson Assault').base).toBe(
+			'Music Kit | Daniel Sadowski, Crimson Assault'
+		);
+	});
+});
+
+describe('slugify', () => {
+	it('makes stable slugs', () => {
+		expect(slugify('★ Karambit | Doppler')).toBe('karambit-doppler');
+		expect(slugify('AK-47 | Redline')).toBe('ak-47-redline');
+	});
+});
+
+describe('configRank', () => {
+	it('sorts normal, then StatTrak, by wear and phase', () => {
+		const a = configRank({ stattrak: false, souvenir: false, wear: 'Factory New', phase: 'Ruby' });
+		const b = configRank({ stattrak: false, souvenir: false, wear: 'Minimal Wear', phase: null });
+		const c = configRank({ stattrak: true, souvenir: false, wear: 'Factory New', phase: null });
+		expect(a).toBeLessThan(b);
+		expect(b).toBeLessThan(c);
+	});
+});

src/lib/cs-prices/catalog.ts

@@ -0,0 +1,87 @@
+// Pure helpers shared by scripts/cs-prices.ts and the item pages: how a market hash name maps to
+// its skin (the page that groups every wear, StatTrak, Souvenir and phase config).
+
+export const wearOrder = [
+	'Factory New',
+	'Minimal Wear',
+	'Field-Tested',
+	'Well-Worn',
+	'Battle-Scarred'
+] as const;
+export const wearShort: Record<string, string> = {
+	'Factory New': 'FN',
+	'Minimal Wear': 'MW',
+	'Field-Tested': 'FT',
+	'Well-Worn': 'WW',
+	'Battle-Scarred': 'BS'
+};
+export const phaseOrder = [
+	'Phase 1',
+	'Phase 2',
+	'Phase 3',
+	'Phase 4',
+	'Ruby',
+	'Sapphire',
+	'Black Pearl',
+	'Emerald'
+] as const;
+
+const wearSuffix = / \((Factory New|Minimal Wear|Field-Tested|Well-Worn|Battle-Scarred)\)$/;
+
+export type Config = {
+	starred: boolean;
+	stattrak: boolean;
+	souvenir: boolean;
+	wear: string | null;
+	/** Name without ★, StatTrak™, Souvenir or wear: the skin grouping key. */
+	base: string;
+	/** Display name of the skin: base with ★ for knives and gloves. */
+	display: string;
+};
+
+export function parseConfig(marketHashName: string): Config {
+	let name = marketHashName.trim();
+	const starred = name.startsWith('★ ');
+	if (starred) name = name.slice(2);
+	let stattrak = false;
+	let souvenir = false;
+	if (name.startsWith('StatTrak™ ')) {
+		stattrak = true;
+		name = name.slice('StatTrak™ '.length);
+	}
+	if (name.startsWith('Souvenir ') && name.includes(' | ')) {
+		souvenir = true;
+		name = name.slice('Souvenir '.length);
+	}
+	const wear = wearSuffix.exec(name)?.[1] ?? null;
+	if (wear) name = name.replace(wearSuffix, '');
+	return { starred, stattrak, souvenir, wear, base: name, display: starred ? `★ ${name}` : name };
+}
+
+export function slugify(value: string) {
+	return (
+		value
+			.normalize('NFKD')
+			.replace(/[\u0300-\u036f]/g, '')
+			.replace(/★/g, '')
+			.replace(/™/g, '')
+			.toLowerCase()
+			.replace(/&/g, ' and ')
+			.replace(/[^a-z0-9]+/g, '-')
+			.replace(/^-+|-+$/g, '')
+			.slice(0, 120) || 'item'
+	);
+}
+
+/** Order configs: normal before StatTrak before Souvenir, then wear, then phase. */
+export function configRank(row: {
+	stattrak: boolean;
+	souvenir: boolean;
+	wear: string | null;
+	phase: string | null;
+}) {
+	const variant = row.souvenir ? 2 : row.stattrak ? 1 : 0;
+	const wear = row.wear ? wearOrder.indexOf(row.wear as (typeof wearOrder)[number]) + 1 : 0;
+	const phase = row.phase ? phaseOrder.indexOf(row.phase as (typeof phaseOrder)[number]) + 1 : 0;
+	return variant * 1000 + wear * 20 + phase;
+}

src/lib/math.ts

@@ -0,0 +1,39 @@
+// Math tracker (/trackers/math): Evan Chen's "An Infinitely Large Napkin". Shared by the
+// server (owner gate, loads) and the page.
+
+/**
+ * The privacy switch. true: owner-only (404 for everyone else, lock icon in every tracker
+ * list). false: a public, read-only page for everyone else (notes stay owner-only, edits
+ * are always owner-only). Flip this one constant; owner.ts and projects.ts read it.
+ */
+export const MATH_PRIVATE = true;
+
+export const MATH_STATUSES = ['not_started', 'reading', 'exercises', 'done', 'skipped'] as const;
+export type MathStatus = (typeof MATH_STATUSES)[number];
+
+export const STATUS_LABEL: Record<MathStatus, string> = {
+	not_started: 'not started',
+	reading: 'reading',
+	exercises: 'exercises',
+	done: 'done',
+	skipped: 'skipped'
+};
+
+/** The free PDF of the book; chapters link to it with #page=N (PDF page numbers). */
+export const NAPKIN_PDF = 'https://venhance.github.io/napkin/Napkin.pdf';
+export const pdfPage = (page: number) => `${NAPKIN_PDF}#page=${page}`;
+
+/** "9,10,11,12,18" → "9–12, 18" (numeric keys only; letters are listed as-is). */
+export function compactKeys(keys: readonly string[]): string {
+	const nums = keys.filter((k) => /^\d+$/.test(k)).map(Number);
+	const other = keys.filter((k) => !/^\d+$/.test(k));
+	nums.sort((a, b) => a - b);
+	const out: string[] = [];
+	for (let i = 0; i < nums.length;) {
+		let j = i;
+		while (j + 1 < nums.length && nums[j + 1] === nums[j] + 1) j++;
+		out.push(j - i >= 2 ? `${nums[i]}–${nums[j]}` : nums.slice(i, j + 1).join(', '));
+		i = j + 1;
+	}
+	return [...out, ...other].join(', ');
+}

src/lib/money-tracker/MoneyChart.svelte

@@ -105,14 +105,17 @@
 			)
 			.join(' ');
 	}
-	/** Solid part through `dashedFrom` and dashed part from the last solid point onward. */
+	/** Actual part through `projectedFrom` and projected part from the last actual point onward. */
 	function segments(item: ChartSeries) {
-		if (!item.dashedFrom) return { solid: item.points, dashed: [] };
-		const split = item.points.findLastIndex((point) => point.date <= item.dashedFrom!);
+		if (!item.projectedFrom) return { actual: item.points, projected: [] };
+		const split = item.points.findLastIndex((point) => point.date <= item.projectedFrom!);
 		return split < 0
-			? { solid: [], dashed: item.points }
-			: { solid: item.points.slice(0, split + 1), dashed: item.points.slice(split) };
+			? { actual: [], projected: item.points }
+			: { actual: item.points.slice(0, split + 1), projected: item.points.slice(split) };
 	}
+	/** Actual lines are thick and opaque; projected ones a thin, slightly lighter solid line. */
+	const lineWidth = (item: ChartSeries, projected: boolean) =>
+		projected ? (item.emphasis ? 1.5 : 1.1) : item.emphasis ? 3 : 1.75;
 	function pointAt(points: ChartPoint[], date: string) {
 		if (!points.length || date < points[0].date || date > points.at(-1)!.date) return null;
 		return points.findLast((point) => point.date <= date) ?? null;
@@ -236,16 +239,17 @@
 				{/if}
 				{#each series as item (item.label)}
 					{@const parts = segments(item)}
-					{#each [parts.solid, parts.dashed] as points, index (index)}
+					{#each [parts.actual, parts.projected] as points, index (index)}
 						{#if points.length > 1}
 							<path
 								d={path(points)}
 								fill="none"
 								stroke={item.color}
-								stroke-width={item.emphasis ? 3 : 1.75}
-								stroke-dasharray={index ? '6 5' : undefined}
-								stroke-linecap={index ? 'butt' : 'round'}
+								stroke-width={lineWidth(item, index === 1)}
+								stroke-opacity={index ? 0.8 : 1}
+								stroke-linecap="round"
 								stroke-linejoin="round"
+								data-line={index ? 'projected' : 'actual'}
 							/>
 						{/if}
 					{/each}
@@ -306,16 +310,16 @@
 				</div>
 			{/if}
 		</div>
-		{#if series.length > 1 || series.some((item) => item.dashedFrom)}
+		{#if series.length > 1 || series.some((item) => item.projectedFrom)}
 			<figcaption class="legend">
 				{#each series as item (item.label)}
 					<span class:emphasis={item.emphasis}
 						><span class="swatch" style={`background:${item.color}`}></span>{item.label}</span
 					>
 				{/each}
-				{#if series.some((item) => item.dashedFrom)}
-					<span class="line-key first"><span class="key solid"></span>Actual</span>
-					<span class="line-key"><span class="key dashed"></span>Projected</span>
+				{#if series.some((item) => item.projectedFrom)}
+					<span class="line-key first"><span class="key actual"></span>Actual</span>
+					<span class="line-key"><span class="key projected"></span>Projected</span>
 				{/if}
 			</figcaption>
 		{/if}
@@ -419,10 +423,12 @@
 	.key {
 		display: inline-block;
 		width: 18px;
-		border-top: 2px solid var(--site-muted);
+		border-top: 3px solid var(--site-muted);
+		border-radius: 2px;
 	}
-	.key.dashed {
-		border-top-style: dashed;
+	.key.projected {
+		border-top-width: 1.5px;
+		opacity: 0.8;
 	}
 	.swatch {
 		display: inline-block;

src/lib/money-tracker/ScenarioDetails.svelte

@@ -43,6 +43,7 @@
 				{ key: 'crashEveryYears', label: 'Crash every', unit: 'yr' },
 				{ key: 'firstCrashYear', label: 'First crash', unit: '' },
 				{ key: 'correctionPercent', label: 'Mid-cycle correction', unit: '%' },
+				{ key: 'calmYears', label: 'Calm start (no crashes)', unit: 'yr' },
 				{ key: 'cashRatePercent', label: 'Interest on cash', unit: '%' },
 				{ key: 'inflationPercent', label: 'Inflation', unit: '%' }
 			]
@@ -61,6 +62,7 @@
 				{ key: 'hopRaisePercent', label: 'Raise per hop', unit: '%' },
 				{ key: 'hopGapMonths', label: 'Gap before each hop', unit: 'mo' },
 				{ key: 'salaryCapEuros', label: 'Plateau base salary', unit: '€/yr' },
+				{ key: 'salaryCapGrowthPercent', label: 'Plateau growth (real)', unit: '%/yr' },
 				{ key: 'bonusPercentOfTarget', label: 'Bonus paid of estimate', unit: '%' },
 				{ key: 'sideStartEuros', label: 'Side income now (gross)', unit: '€/mo' },
 				{ key: 'sideEndEuros', label: 'Side income from year 5', unit: '€/mo' }
@@ -101,7 +103,21 @@
 			: 'Not by the end';
 	let active = $derived(params[selected]);
 	let result = $derived(results[selected]);
-	let normalReturn = $derived(marketReturns(active).normal);
+	let markets = $derived(marketReturns(active, result.years[0]?.year));
+	let normalReturn = $derived(markets.normal);
+	/** First crash after any calm start. */
+	let firstCrash = $derived.by(() => {
+		let year = active.firstCrashYear;
+		const every = Math.max(1, Math.round(active.crashEveryYears));
+		while (markets.calmUntil !== null && year <= markets.calmUntil) year += every;
+		return year;
+	});
+	/** Crash and correction years in the first ten years, for the explanation. */
+	let shocks = $derived(
+		Array.from({ length: 11 }, (_, offset) => (result.years[0]?.year ?? 0) + offset)
+			.map((year) => ({ year, ...markets.yearReturn(year) }))
+			.filter((row) => row.kind === 'crash' || row.kind === 'correction')
+	);
 	/** Salary path rows through the retirement year. */
 	let career = $derived(
 		result.years.filter(
@@ -163,11 +179,24 @@
 		<p class="muted scenario-portfolio">
 			<strong>{active.label} portfolio:</strong>
 			{active.portfolio}. Average {active.returnPercent}%/yr nominal, volatility about {active.volatilityPercent}%.
+			{#if markets.calmUntil !== null}No crash or down year through {markets.calmUntil}: those years
+				earn the {active.returnPercent}% average.
+			{/if}
 			{#if active.crashPercent !== 0}A {active.crashPercent}% crash every {active.crashEveryYears} years
-				from {active.firstCrashYear}{active.correctionPercent !== 0
+				from {firstCrash}{active.correctionPercent !== 0
 					? `, a ${active.correctionPercent}% correction halfway between`
-					: ''}, and {percent(normalReturn)} in the other years so it averages out.
+					: ''}, and {percent(normalReturn)} in the other years so it averages out{markets.calmUntil !==
+				null
+					? ` (from ${markets.calmUntil + 1})`
+					: ''}. A crash drops over March–October and takes about {Math.ceil(
+					Math.log(1 / (1 + active.crashPercent / 100)) / Math.log(1 + normalReturn)
+				)} years of normal returns to recover.
+				{#if shocks.length}Next ten years: {shocks
+						.map((row) => `${row.year} ${row.kind} ${Math.round(row.rate * 100)}%`)
+						.join(', ')}.{:else}No crash or correction in the next ten years.{/if}
 			{:else}No crashes modelled.{/if}
+			{#if active.salaryCapGrowthPercent > 0}The salary plateau keeps rising {active.salaryCapGrowthPercent}%/yr
+				above inflation, so pay never stalls.{/if}
 			Retirement in {scenarioFacts.birthYear + active.retireAge} at {active.retireAge}: salary and
 			side income stop, {cents(active.pensionNetEuros * 100)}/mo net pension (today’s €) starts, and
 			the rest of the spending is sold from investments.
@@ -180,9 +209,10 @@
 				Joint items from the recurring list in full until the rent starts, then your share, while your
 				partner’s income pays hers, DUO {cents(scenarioFacts.duoCents)}/mo from {scenarioFacts.duoFrom}
 				to {scenarioFacts.duoUntil}. Prices, benefits, pension, the buffer and the salary plateau
-				grow with inflation; spending grows at the spending rate for ten years, then with inflation.
-				Box 3 keeps taxing gains (losses carried forward). Salary bands (base per year, excl. 8%
-				holiday pay): medior €52–68k, senior €65–91k, lead €79–110k (<a
+				grow with inflation (the plateau can grow faster, see above); spending grows at the spending
+				rate for ten years, then with inflation. Box 3 keeps taxing gains (losses carried forward).
+				Salary bands (base per year, excl. 8% holiday pay): medior €52–68k, senior €65–91k, lead
+				€79–110k (<a
 					href="https://chaseitrecruitment.nl/tools/salaris/software-engineer/"
 					rel="external noreferrer">Chase IT 2026</a
 				>,

src/lib/money-tracker/charts.test.ts

@@ -207,7 +207,7 @@ describe('money tracker calculations', () => {
 			}
 		];
 		const [total] = wealthTimeline(accounts, actual, projection, '2026-09-23', 'total');
-		expect(total.dashedFrom).toBe('2026-09-23');
+		expect(total.projectedFrom).toBe('2026-09-23');
 		expect(total.points).toEqual([
 			{ date: '2026-09-01', value: 50000 },
 			{ date: '2026-09-10', value: 70000 },

src/lib/money-tracker/charts.ts

@@ -15,8 +15,8 @@ export type ChartSeries = {
 	color: string;
 	points: ChartPoint[];
 	emphasis?: boolean;
-	/** Points after this date are drawn dashed (projected). */
-	dashedFrom?: string;
+	/** Points after this date are projected: drawn as a thinner, lighter solid line. */
+	projectedFrom?: string;
 };
 
 const palette = ['#0070f3', '#e5484d', '#46a758', '#ad7f00', '#8e4ec6', '#0091ad', '#e56910'];
@@ -283,7 +283,7 @@ export function wealthProjection(
 /**
  * Thins long series for drawing: per time bucket only the lowest and highest point stay (in
  * date order), so a daily projection over decades keeps its spikes without plotting every day.
- * The first and last points and the solid/dashed join are always kept.
+ * The first and last points and the actual/projected join are always kept.
  */
 export function decimateSeries(series: ChartSeries[], buckets: number): ChartSeries[] {
 	const limit = Math.max(2, Math.floor(buckets)) * 2;
@@ -301,8 +301,8 @@ export function decimateSeries(series: ChartSeries[], buckets: number): ChartSer
 		const keep = new Uint8Array(line.points.length);
 		keep[0] = 1;
 		keep[line.points.length - 1] = 1;
-		if (line.dashedFrom) {
-			const join = line.points.findLastIndex((point) => point.date <= line.dashedFrom!);
+		if (line.projectedFrom) {
+			const join = line.points.findLastIndex((point) => point.date <= line.projectedFrom!);
 			if (join >= 0) keep[join] = 1;
 		}
 		let bucket = -1;
@@ -334,7 +334,7 @@ export function decimateSeries(series: ChartSeries[], buckets: number): ChartSer
 export type TimelineView = 'total' | 'split' | 'accounts';
 
 /**
- * Joins actual history (solid, through today) with the wealth projection (dashed, after
+ * Joins actual history (solid, through today) with the wealth projection (thin solid line, after
  * today) so both read as one continuous line per measure.
  */
 export function wealthTimeline(
@@ -379,7 +379,7 @@ export function wealthTimeline(
 		label: 'Total',
 		color: 'var(--site-text)',
 		emphasis: true,
-		dashedFrom: today,
+		projectedFrom: today,
 		points: join(history.at(-1)!.points, totalProjection?.points ?? [])
 	};
 	if (view === 'accounts')
@@ -395,13 +395,13 @@ export function wealthTimeline(
 			{
 				label: 'Spendable',
 				color: '#46a758',
-				dashedFrom: today,
+				projectedFrom: today,
 				points: join(sumKind(false), spendableProjection?.points ?? [])
 			},
 			{
 				label: 'Invested',
 				color: '#8e4ec6',
-				dashedFrom: today,
+				projectedFrom: today,
 				points: join(sumKind(true), investedProjection?.points ?? [])
 			}
 		];

src/lib/money-tracker/scenarios.test.ts

@@ -189,6 +189,49 @@ describe('runScenario', () => {
 		expect(markets.yearReturn(2034).kind).toBe('correction');
 		expect(markets.yearReturn(2028).kind).toBe('normal');
 	});
+	it('keeps the optimistic start calm and its cycle after that', () => {
+		const markets = marketReturns(defaultScenarios.optimistic, 2026);
+		for (let year = 2026; year <= 2031; year++)
+			expect(markets.yearReturn(year)).toEqual({ kind: 'calm', rate: 0.095 });
+		expect(markets.yearReturn(2032).kind).toBe('normal');
+		expect(markets.yearReturn(2035)).toMatchObject({ kind: 'correction', rate: -0.15 });
+		expect(markets.yearReturn(2040)).toMatchObject({ kind: 'crash', rate: -0.38 });
+		// No down year at all in the first five years of the run.
+		const run = runScenario(inputs, defaultScenarios.optimistic);
+		const growth = run.years.filter((row) => row.year <= 2031).map((row) => row.invested);
+		growth.slice(1).forEach((value, index) => expect(value).toBeGreaterThan(growth[index]));
+	});
+	it('gives realistic one crash in its first ten years and keeps pessimistic as it was', () => {
+		const shocks = (id: 'realistic' | 'pessimistic') => {
+			const markets = marketReturns(defaultScenarios[id], 2026);
+			return Array.from({ length: 10 }, (_, offset) => 2026 + offset)
+				.map((year) => ({ year, ...markets.yearReturn(year) }))
+				.filter((row) => row.kind === 'crash');
+		};
+		expect(shocks('realistic')).toEqual([{ year: 2029, kind: 'crash', rate: -0.3 }]);
+		expect(shocks('pessimistic').map((row) => row.year)).toEqual([2027, 2035]);
+		expect(defaultScenarios.realistic.calmYears).toBe(0);
+		expect(defaultScenarios.pessimistic.calmYears).toBe(0);
+		// Without a start year the calm start never applies.
+		expect(marketReturns(defaultScenarios.optimistic).yearReturn(2030).kind).toBe('crash');
+	});
+	it('keeps the optimistic salary rising every working year', () => {
+		const long = { ...inputs, endDate: '2076-10-24' };
+		const years = runScenario(long, defaultScenarios.optimistic).years.filter(
+			(row) => row.year >= 2027 && row.role !== 'Retired'
+		);
+		expect(years.length).toBeGreaterThan(40);
+		years
+			.slice(1)
+			.forEach((row, index) => expect(row.baseReal).toBeGreaterThan(years[index].baseReal));
+		// A flat plateau stalls once it is reached.
+		const flatCap = runScenario(long, {
+			...defaultScenarios.optimistic,
+			salaryCapGrowthPercent: 0
+		});
+		const late = flatCap.years.filter((row) => row.year >= 2050 && row.role !== 'Retired');
+		expect(late.at(-1)!.baseReal).toBeCloseTo(late[0].baseReal, -2);
+	});
 	it('hops jobs, caps the salary and retires at the chosen age', () => {
 		const long = { ...inputs, endDate: '2126-10-24' };
 		const result = runScenario(long, {

src/lib/money-tracker/scenarios.ts

@@ -39,6 +39,11 @@ export type ScenarioParams = {
 	firstCrashYear: number;
 	/** Smaller correction halfway between crashes, percent (0 = none). */
 	correctionPercent: number;
+	/**
+	 * Calm start: no crash or correction from this year through this many years ahead; those
+	 * years earn the plain average return (0 = the crash cycle applies from the start).
+	 */
+	calmYears: number;
 	/** Interest on the cash buffer, percent per year. */
 	cashRatePercent: number;
 	/** Inflation: prices, the salary cap, pension and benefits grow with it; percent. */
@@ -62,6 +67,8 @@ export type ScenarioParams = {
 	hopGapMonths: number;
 	/** Career plateau: base salary cap per year in today's euros (excl. holiday pay). */
 	salaryCapEuros: number;
+	/** Real growth of that plateau per year, percent (0 = flat once reached). */
+	salaryCapGrowthPercent: number;
 	/** Share of the contract's bonus estimate actually paid each August, 0–100. */
 	bonusPercentOfTarget: number;
 	/** Side income, gross today's euros per month, ramping over five years to the end value. */
@@ -97,6 +104,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		crashEveryYears: 8,
 		firstCrashYear: 2027,
 		correctionPercent: -8,
+		calmYears: 0,
 		cashRatePercent: 0,
 		inflationPercent: 2.5,
 		gapMonths: 3,
@@ -110,6 +118,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		hopRaisePercent: 15,
 		hopGapMonths: 3,
 		salaryCapEuros: 75000,
+		salaryCapGrowthPercent: 0,
 		bonusPercentOfTarget: 0,
 		sideStartEuros: 100,
 		sideEndEuros: 100,
@@ -132,6 +141,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		crashEveryYears: 10,
 		firstCrashYear: 2029,
 		correctionPercent: -10,
+		calmYears: 0,
 		cashRatePercent: 1.5,
 		inflationPercent: 2.5,
 		gapMonths: 0,
@@ -145,6 +155,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		hopRaisePercent: 20,
 		hopGapMonths: 0,
 		salaryCapEuros: 95000,
+		salaryCapGrowthPercent: 0,
 		bonusPercentOfTarget: 100,
 		sideStartEuros: 250,
 		sideEndEuros: 500,
@@ -167,6 +178,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		crashEveryYears: 10,
 		firstCrashYear: 2030,
 		correctionPercent: -15,
+		calmYears: 5,
 		cashRatePercent: 1.5,
 		inflationPercent: 2.5,
 		gapMonths: 0,
@@ -180,6 +192,7 @@ export const defaultScenarios: Record<ScenarioId, ScenarioParams> = {
 		hopRaisePercent: 22,
 		hopGapMonths: 0,
 		salaryCapEuros: 150000,
+		salaryCapGrowthPercent: 2,
 		bonusPercentOfTarget: 100,
 		sideStartEuros: 300,
 		sideEndEuros: 2500,
@@ -396,9 +409,11 @@ function monthEnd(first: string) {
 
 /**
  * Years of a crash cycle: a crash in the first year, a correction halfway, and normal years whose
- * return makes the whole cycle average out at the expected return.
+ * return makes the whole cycle average out at the expected return. With `calmYears`, the years
+ * from `startYear` through `startYear + calmYears` have no crash or correction and earn the plain
+ * average return; the cycle keeps its phase after that.
  */
-export function marketReturns(params: ScenarioParams) {
+export function marketReturns(params: ScenarioParams, startYear?: number) {
 	const pct = (value: number) => value / 100;
 	const every = Math.max(2, Math.round(params.crashEveryYears));
 	const crashes = params.crashPercent !== 0;
@@ -410,9 +425,16 @@ export function marketReturns(params: ScenarioParams) {
 	const normal = crashes
 		? Math.pow(Math.pow(1 + pct(params.returnPercent), every) / shocks, 1 / normalYears) - 1
 		: pct(params.returnPercent);
+	const calmUntil =
+		startYear !== undefined && params.calmYears > 0
+			? startYear + Math.round(params.calmYears)
+			: null;
 	return {
 		normal,
+		calmUntil,
 		yearReturn(year: number) {
+			if (calmUntil !== null && year <= calmUntil)
+				return { kind: 'calm' as const, rate: pct(params.returnPercent) };
 			if (!crashes || year < params.firstCrashYear)
 				return { kind: 'normal' as const, rate: normal };
 			const offset = (year - params.firstCrashYear) % every;
@@ -444,7 +466,7 @@ export function runScenario(inputs: ScenarioInputs, params: ScenarioParams): Sce
 	const gapStart = addMonths(facts.contractEnd, 1);
 	const gapEnd = params.gapMonths > 0 ? addMonths(gapStart, params.gapMonths) : gapStart;
 	const retireStart = `${facts.birthYear + Math.round(params.retireAge)}-01-01`;
-	const markets = marketReturns(params);
+	const markets = marketReturns(params, Number(inputs.today.slice(0, 4)));
 	const monthlyInflation = Math.pow(1 + pct(params.inflationPercent), 1 / 12);
 	const isHopYear = (year: number) =>
 		params.hopEveryYears > 0 &&
@@ -589,7 +611,10 @@ export function runScenario(inputs: ScenarioInputs, params: ScenarioParams): Sce
 				!(hopStart && month === 10)
 			)
 				gross *= 1 + pct(params.raisePercent);
-			const cap = ((params.salaryCapEuros * 100) / 12) * deflator;
+			const cap =
+				((params.salaryCapEuros * 100) / 12) *
+				deflator *
+				Math.pow(1 + pct(params.salaryCapGrowthPercent), Math.max(0, index) / 12);
 			if (hopStart && first === hopStart && params.hopGapMonths > 0 && !retired)
 				row.events.push(`Between jobs (${params.hopGapMonths} mo)`);
 			if (hopEnd && first === hopEnd && !retired) {
@@ -727,7 +752,7 @@ export function runScenario(inputs: ScenarioInputs, params: ScenarioParams): Sce
 		// compounding gives the same monthly return.
 		const market = markets.yearReturn(year);
 		const monthRate =
-			market.kind === 'normal'
+			market.kind === 'normal' || market.kind === 'calm'
 				? Math.pow(1 + market.rate, 1 / 12) - 1
 				: month >= 3 && month <= 10
 					? Math.pow(1 + market.rate, 1 / 8) - 1
@@ -848,7 +873,7 @@ export function scenarioProjection(result: ScenarioResult, todaysEuros = false):
 	];
 }
 
-/** One dashed total line per scenario, for comparing them on the wealth chart. */
+/** One projected total line per scenario, for comparing them on the wealth chart. */
 export function scenarioCompareLines(
 	results: Record<ScenarioId, ScenarioResult>,
 	params: Record<ScenarioId, ScenarioParams>,
@@ -858,7 +883,7 @@ export function scenarioCompareLines(
 	return scenarioIds.map((id) => ({
 		label: params[id].label,
 		color: scenarioColors[id],
-		dashedFrom: today,
+		projectedFrom: today,
 		points: results[id].points
 			.filter((point) => point.date > today)
 			.map((point) => ({

src/lib/projects.ts

@@ -1,3 +1,4 @@
+import { MATH_PRIVATE } from './math';
 // Real projects (tools and experiments). Personal data trackers live in `trackers`.
 export const projects = [
 	{
@@ -386,6 +387,13 @@ const allTrackers: readonly (Tracker & { private: boolean })[] = [
 		external: false,
 		private: true
 	},
+	{
+		name: 'math',
+		subtitle: "working through Evan Chen's Napkin: chapters, exercises and notes",
+		href: '/trackers/math',
+		external: false,
+		private: MATH_PRIVATE
+	},
 	{
 		name: 'health',
 		subtitle: 'body, workouts, sleep, meds and vaccinations',

src/lib/server/ai-setup.ts

@@ -0,0 +1,217 @@
+// AI tracker, Setup tab (owner-only): how each AI provider is set up. Cards are providers,
+// each with entries grouped by section. Labels only: values that look like secrets are refused.
+import { db } from '#lib/server/db/index.js';
+import {
+	AI_SETUP_COLORS,
+	AI_SETUP_SCOPES,
+	AI_SETUP_SECTIONS,
+	aiSetupEntries,
+	aiSetupProviders
+} from '#lib/server/db/schema/index.js';
+import { asc, eq, sql } from 'drizzle-orm';
+import { Marked } from 'marked';
+import * as z from 'zod';
+
+// Markdown for instructions/notes. Raw HTML is shown as text, never rendered.
+const escapeHtml = (s: string) => s.replace(/[&<>"']/g, (c) => `&#${c.charCodeAt(0)};`);
+const marked = new Marked({
+	gfm: true,
+	breaks: true,
+	renderer: {
+		html: ({ text }) => escapeHtml(text),
+		link({ href, title, tokens }) {
+			const label = this.parser.parseInline(tokens);
+			if (!/^(https?:|mailto:|\/|#)/i.test(href)) return label;
+			const t = title ? ` title="${escapeHtml(title)}"` : '';
+			return `<a href="${escapeHtml(href)}"${t} rel="noopener noreferrer" target="_blank">${label}</a>`;
+		},
+		image: ({ text }) => escapeHtml(text)
+	}
+});
+const renderBody = (md: string) => marked.parse(md, { async: false });
+
+/** Common key formats. Anything matching is refused: this tab stores labels, never keys. */
+const SECRET =
+	/(sk-(ant-|proj-)?[A-Za-z0-9_-]{16,}|xai-[A-Za-z0-9]{20,}|gh[pousr]_[A-Za-z0-9]{20,}|github_pat_[A-Za-z0-9_]{20,}|AIza[0-9A-Za-z_-]{30,}|AKIA[0-9A-Z]{16}|xox[abpr]-[A-Za-z0-9-]{10,}|glpat-[A-Za-z0-9_-]{20,}|-----BEGIN [A-Z ]*PRIVATE KEY-----|eyJ[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{20,}\.)/;
+const noSecret = (v: string | null | undefined) => !v || !SECRET.test(v);
+const SECRET_MSG = 'That looks like a key or token. Store a label only, never the value.';
+
+const trimmed = (max: number) => z.string().trim().min(1, 'Name is required').max(max);
+const optional = (max: number) =>
+	z
+		.string()
+		.trim()
+		.max(max)
+		.nullish()
+		.transform((v) => (v ? v : null));
+const idField = z.coerce.number().int().positive();
+
+const providerInput = z.object({
+	name: trimmed(60),
+	products: optional(120),
+	color: z.enum(AI_SETUP_COLORS).catch('zinc')
+});
+const entryInput = z
+	.object({
+		section: z.enum(AI_SETUP_SECTIONS),
+		name: trimmed(120),
+		note: optional(400),
+		scope: z
+			.enum(['', ...AI_SETUP_SCOPES])
+			.nullish()
+			.transform((v) => (v ? (v as (typeof AI_SETUP_SCOPES)[number]) : null)),
+		link: optional(500).refine((u) => !u || /^https?:\/\/\S+$/i.test(u), 'Link must be http(s)'),
+		body: optional(20000)
+	})
+	.refine((e) => noSecret(e.name) && noSecret(e.note) && noSecret(e.link) && noSecret(e.body), {
+		message: SECRET_MSG
+	});
+
+export type SetupEntry = {
+	id: number;
+	section: (typeof AI_SETUP_SECTIONS)[number];
+	name: string;
+	note: string | null;
+	scope: string | null;
+	link: string | null;
+	body: string | null;
+	bodyHtml: string | null;
+	updatedAt: string;
+};
+export type SetupProvider = {
+	id: number;
+	name: string;
+	products: string | null;
+	color: (typeof AI_SETUP_COLORS)[number];
+	updatedAt: string;
+	entries: SetupEntry[];
+};
+
+export async function loadSetup(): Promise<SetupProvider[]> {
+	const providers = await db
+		.select()
+		.from(aiSetupProviders)
+		.orderBy(asc(aiSetupProviders.sortOrder), asc(aiSetupProviders.id));
+	const entries = await db
+		.select()
+		.from(aiSetupEntries)
+		.orderBy(asc(aiSetupEntries.sortOrder), asc(aiSetupEntries.id));
+	return providers.map((p) => {
+		const own = entries.filter((e) => e.providerId === p.id);
+		const latest = Math.max(p.updatedAt.getTime(), ...own.map((e) => e.updatedAt.getTime()));
+		return {
+			id: p.id,
+			name: p.name,
+			products: p.products,
+			color: (AI_SETUP_COLORS as readonly string[]).includes(p.color)
+				? (p.color as SetupProvider['color'])
+				: 'zinc',
+			updatedAt: new Date(latest).toISOString(),
+			entries: own.map((e) => ({
+				id: e.id,
+				section: e.section as SetupEntry['section'],
+				name: e.name,
+				note: e.note,
+				scope: e.scope,
+				link: e.link,
+				body: e.body,
+				bodyHtml: e.body ? renderBody(e.body) : null,
+				updatedAt: e.updatedAt.toISOString()
+			}))
+		};
+	});
+}
+
+type Result = { ok: true } | { ok: false; message: string };
+const firstIssue = (e: z.ZodError) => e.issues[0]?.message ?? 'Invalid input';
+const fields = (form: FormData) =>
+	Object.fromEntries([...form.entries()].map(([k, v]) => [k, typeof v === 'string' ? v : '']));
+
+/** Entry changes count as a change to the card ("last updated" also covers deletes). */
+const touch = (providerId: number) =>
+	db
+		.update(aiSetupProviders)
+		.set({ updatedAt: new Date() })
+		.where(eq(aiSetupProviders.id, providerId));
+
+const isUniqueViolation = (e: unknown) =>
+	typeof e === 'object' &&
+	e !== null &&
+	('code' in e ? e.code : (e as { cause?: { code?: string } }).cause?.code) === '23505';
+
+export async function addProvider(form: FormData): Promise<Result> {
+	const parsed = providerInput.safeParse(fields(form));
+	if (!parsed.success) return { ok: false, message: firstIssue(parsed.error) };
+	try {
+		const [{ next }] = await db
+			.select({ next: sql<number>`coalesce(max(${aiSetupProviders.sortOrder}), 0) + 10` })
+			.from(aiSetupProviders);
+		await db.insert(aiSetupProviders).values({ ...parsed.data, sortOrder: Number(next) });
+	} catch (e) {
+		if (isUniqueViolation(e)) return { ok: false, message: 'A provider with that name exists' };
+		throw e;
+	}
+	return { ok: true };
+}
+
+export async function updateProvider(form: FormData): Promise<Result> {
+	const id = idField.safeParse(form.get('id'));
+	const parsed = providerInput.safeParse(fields(form));
+	if (!id.success) return { ok: false, message: 'Missing id' };
+	if (!parsed.success) return { ok: false, message: firstIssue(parsed.error) };
+	try {
+		await db.update(aiSetupProviders).set(parsed.data).where(eq(aiSetupProviders.id, id.data));
+	} catch (e) {
+		if (isUniqueViolation(e)) return { ok: false, message: 'A provider with that name exists' };
+		throw e;
+	}
+	return { ok: true };
+}
+
+export async function deleteProvider(form: FormData): Promise<Result> {
+	const id = idField.safeParse(form.get('id'));
+	if (!id.success) return { ok: false, message: 'Missing id' };
+	await db.delete(aiSetupProviders).where(eq(aiSetupProviders.id, id.data));
+	return { ok: true };
+}
+
+export async function addEntry(form: FormData): Promise<Result> {
+	const providerId = idField.safeParse(form.get('provider_id'));
+	const parsed = entryInput.safeParse(fields(form));
+	if (!providerId.success) return { ok: false, message: 'Missing provider' };
+	if (!parsed.success) return { ok: false, message: firstIssue(parsed.error) };
+	const [{ next }] = await db
+		.select({ next: sql<number>`coalesce(max(${aiSetupEntries.sortOrder}), 0) + 10` })
+		.from(aiSetupEntries)
+		.where(eq(aiSetupEntries.providerId, providerId.data));
+	await db
+		.insert(aiSetupEntries)
+		.values({ ...parsed.data, providerId: providerId.data, sortOrder: Number(next) });
+	await touch(providerId.data);
+	return { ok: true };
+}
+
+export async function updateEntry(form: FormData): Promise<Result> {
+	const id = idField.safeParse(form.get('id'));
+	const parsed = entryInput.safeParse(fields(form));
+	if (!id.success) return { ok: false, message: 'Missing id' };
+	if (!parsed.success) return { ok: false, message: firstIssue(parsed.error) };
+	const [row] = await db
+		.update(aiSetupEntries)
+		.set(parsed.data)
+		.where(eq(aiSetupEntries.id, id.data))
+		.returning({ providerId: aiSetupEntries.providerId });
+	if (row) await touch(row.providerId);
+	return { ok: true };
+}
+
+export async function deleteEntry(form: FormData): Promise<Result> {
+	const id = idField.safeParse(form.get('id'));
+	if (!id.success) return { ok: false, message: 'Missing id' };
+	const [row] = await db
+		.delete(aiSetupEntries)
+		.where(eq(aiSetupEntries.id, id.data))
+		.returning({ providerId: aiSetupEntries.providerId });
+	if (row) await touch(row.providerId);
+	return { ok: true };
+}

src/lib/server/bank-sync.test.ts

@@ -24,6 +24,24 @@ const tx = (overrides: Partial<BankTransaction> = {}): BankTransaction => ({
 });
 
 describe('bank transaction mapping', () => {
+	it('tags interest and dividend payouts, nothing else', () => {
+		const credit = (remittance: string[], code?: string) =>
+			mapBankTransaction(
+				tx({
+					credit_debit_indicator: 'CRDT',
+					creditor: undefined,
+					debtor: { name: 'Revolut' },
+					remittance_information: remittance,
+					bank_transaction_code: code ? { code } : undefined
+				})
+			)!.category;
+		expect(credit(['Savings vault interest'])).toBe('interest');
+		expect(credit(['Interest PAID EUR Class R IE000AZVL3K0'])).toBe('interest');
+		expect(credit(['Revolut'], 'INTEREST')).toBe('interest');
+		expect(credit(['Dividend Payment: VWRL'])).toBe('dividend');
+		expect(credit(['From JUHEUI KIM & STAN RUNGE'], 'TRANSFER')).toBeNull();
+		expect(mapBankTransaction(tx({ remittance_information: ['Interest'] }))!.category).toBeNull();
+	});
 	it('parses decimal amounts exactly', () => {
 		expect(amountToCents('12.34')).toBe(1234);
 		expect(amountToCents('-0.5')).toBe(-50);

src/lib/server/bank-sync.ts

@@ -11,6 +11,7 @@ import type {
 	SessionResponse
 } from './enable-banking';
 import { EnableBankingError } from './enable-banking';
+import { investmentIncomeCategory } from './investment-income';
 import { findSumMatch } from './reconcile';
 
 export type MappedTransaction = {
@@ -21,6 +22,8 @@ export type MappedTransaction = {
 	counterparty: string | null;
 	amountCents: number;
 	bookingStatus: string;
+	/** 'interest' / 'dividend' for investment income payouts, else null. */
+	category: string | null;
 	raw: BankTransaction;
 };
 
@@ -79,6 +82,17 @@ export function mapBankTransaction(tx: BankTransaction): MappedTransaction | nul
 		counterparty,
 		amountCents,
 		bookingStatus: tx.status ?? 'BOOK',
+		category: investmentIncomeCategory({
+			amountCents,
+			kind: tx.bank_transaction_code?.code,
+			texts: [
+				description,
+				...remittance,
+				tx.bank_transaction_code?.description,
+				tx.bank_transaction_code?.sub_code,
+				tx.note
+			]
+		}),
 		raw: tx
 	};
 }
@@ -435,10 +449,11 @@ export async function syncBankAccounts(
 					for (const { row } of absorbed)
 						await q`delete from money.transactions where id = ${row.id} and external_id is null`;
 					for (const { id, tx } of updates) {
-						// Keep Stan's own description/category; attach the bank identity.
+						// Keep Stan's own description/category (only fill an empty one); attach the bank identity.
 						await q`
 							update money.transactions set external_id = ${tx.externalId},
 								counterparty = coalesce(counterparty, ${tx.counterparty}),
+								category = coalesce(category, ${tx.category}),
 								booking_status = ${tx.bookingStatus}, value_date = ${tx.valueDate},
 								raw = ${q.json(tx.raw as never)}
 							where id = ${id} and external_id is null`;
@@ -447,10 +462,10 @@ export async function syncBankAccounts(
 						await q`
 							insert into money.transactions
 								(user_id, account_id, date, description, amount_cents, external_id, source,
-								 booking_status, counterparty, raw, value_date)
+								 booking_status, counterparty, category, raw, value_date)
 							values (${account.user_id}, ${account.id}, ${tx.date}, ${tx.description},
 								${tx.amountCents}, ${tx.externalId}, 'enablebanking', ${tx.bookingStatus},
-								${tx.counterparty}, ${q.json(tx.raw as never)}, ${tx.valueDate})
+								${tx.counterparty}, ${tx.category}, ${q.json(tx.raw as never)}, ${tx.valueDate})
 							on conflict (account_id, external_id) do nothing`;
 					}
 				});

src/lib/server/cs-prices.ts

@@ -0,0 +1,275 @@
+import { db } from '#lib/server/db/index.js';
+import { sql } from 'drizzle-orm';
+import { configRank, wearOrder, wearShort } from '#lib/cs-prices/catalog.js';
+
+// Read side of the CS2 price archive (cs.*): skin search, a skin's configs with their latest
+// price per source, and one config's daily history. USD streams are shown in EUR using the
+// ECB rate of that day (cs.fx_rates); `native` keeps the source's own currency.
+
+export type Stream = { id: number; source: string; currency: string; kind: string; label: string };
+
+export const kinds = [
+	['weapon', 'Weapons'],
+	['knife', 'Knives'],
+	['gloves', 'Gloves'],
+	['sticker', 'Stickers'],
+	['container', 'Cases'],
+	['agent', 'Agents'],
+	['charm', 'Charms'],
+	['patch', 'Patches'],
+	['music-kit', 'Music kits'],
+	['graffiti', 'Graffiti'],
+	['collectible', 'Pins & coins'],
+	['key', 'Keys']
+] as const;
+
+export async function streams(): Promise<Stream[]> {
+	const rows = await db.execute(sql`SELECT id, source, currency, kind,
+		coalesce(label, source || ' ' || replace(kind, '-', ' ')) AS label
+		FROM cs.price_streams WHERE id IS NOT NULL ORDER BY id`);
+	return (rows as unknown as Stream[]).map((row) => ({ ...row, id: Number(row.id) }));
+}
+
+export async function overview() {
+	const [row] = (await db.execute(sql`SELECT
+		(SELECT count(*)::int FROM cs.skins) AS skins,
+		(SELECT count(*)::int FROM cs.items) AS configs,
+		(SELECT max(day)::text FROM cs.daily_prices) AS latest_day,
+		(SELECT count(*)::int FROM cs.daily_prices
+			WHERE day = (SELECT max(day) FROM cs.daily_prices)) AS latest_rows,
+		(SELECT count(DISTINCT item_id)::int FROM cs.daily_prices
+			WHERE day = (SELECT max(day) FROM cs.daily_prices)) AS latest_configs,
+		(SELECT greatest(reltuples::bigint, 0) FROM pg_class
+			WHERE oid = 'cs.daily_prices'::regclass)::bigint AS rows,
+		(SELECT min(day)::text FROM cs.daily_prices) AS earliest_day,
+		(SELECT max(last_fetched_at) FROM cs.price_streams) AS fetched_at`)) as unknown as {
+		skins: number;
+		configs: number;
+		latest_day: string | null;
+		latest_rows: number;
+		latest_configs: number;
+		rows: string;
+		earliest_day: string | null;
+		fetched_at: Date | null;
+	}[];
+	return row;
+}
+
+export type SkinHit = {
+	slug: string;
+	name: string;
+	kind: string;
+	image: string | null;
+	rarity: string | null;
+	rarity_color: string | null;
+	configs: number;
+	from_cents: number | null;
+	listings: number | null;
+};
+
+/** Skins matching every word of `q`, with today's cheapest EUR listing across their configs. */
+export async function searchSkins(q: string, kind: string, sort: string, limit = 60, offset = 0) {
+	const words = q
+		.trim()
+		.slice(0, 100)
+		.split(/\s+/)
+		.filter(Boolean)
+		.slice(0, 6)
+		.map(
+			(word) => `%${word.replaceAll('\\', '\\\\').replaceAll('%', '\\%').replaceAll('_', '\\_')}%`
+		);
+	const filter = words.length
+		? sql.join(
+				words.map((word) => sql`s.name ILIKE ${word} ESCAPE '\\'`),
+				sql` AND `
+			)
+		: sql`true`;
+	const kindFilter =
+		kind && kinds.some(([value]) => value === kind) ? sql`s.kind = ${kind}` : sql`true`;
+	const order =
+		sort === 'price'
+			? sql`p.from_cents DESC NULLS LAST, s.name`
+			: sort === 'name'
+				? sql`s.name`
+				: sql`p.listings DESC NULLS LAST, s.name`;
+	const rows = await db.execute(sql`
+		WITH listing AS (
+			SELECT id FROM cs.price_streams WHERE source = 'skinport' AND kind = 'lowest-listing'
+		), latest AS (
+			SELECT max(day) AS day FROM cs.daily_prices WHERE stream_id = (SELECT id FROM listing)
+		), p AS (
+			SELECT i.skin_id, min(dp.price_cents)::int AS from_cents, sum(dp.volume)::int AS listings
+			FROM cs.daily_prices dp JOIN cs.items i ON i.id = dp.item_id
+			WHERE dp.stream_id = (SELECT id FROM listing) AND dp.day = (SELECT day FROM latest)
+			GROUP BY i.skin_id
+		)
+		SELECT s.slug, s.name, s.kind, s.image, s.rarity, s.rarity_color, p.from_cents, p.listings,
+			(SELECT count(*)::int FROM cs.items i WHERE i.skin_id = s.id) AS configs
+		FROM cs.skins s LEFT JOIN p ON p.skin_id = s.id
+		WHERE ${filter} AND ${kindFilter}
+		ORDER BY ${words.length ? sql`(s.name ILIKE ${words[0].slice(1)} ESCAPE '\\') DESC,` : sql``} ${order}
+		LIMIT ${Math.min(120, Math.max(1, limit))} OFFSET ${Math.min(50_000, Math.max(0, offset))}`);
+	return rows as unknown as SkinHit[];
+}
+
+export type ConfigRow = {
+	id: number;
+	market_hash_name: string;
+	phase: string | null;
+	wear: string | null;
+	stattrak: boolean;
+	souvenir: boolean;
+	icon_url: string | null;
+	prices: {
+		stream: number;
+		cents: number;
+		eur_cents: number;
+		volume: number | null;
+		day: string;
+	}[];
+};
+
+export type Variant = 'normal' | 'stattrak' | 'souvenir';
+export const variantOf = (row: { stattrak: boolean; souvenir: boolean }): Variant =>
+	row.souvenir ? 'souvenir' : row.stattrak ? 'stattrak' : 'normal';
+const shortToWear = Object.fromEntries(Object.entries(wearShort).map(([wear, s]) => [s, wear]));
+
+export async function loadSkin(slug: string) {
+	const [skin] = (await db.execute(sql`SELECT id, slug, name, kind, weapon, pattern, category,
+		rarity, rarity_color, image, min_float, max_float, collections
+		FROM cs.skins WHERE slug = ${slug}`)) as unknown as {
+		id: string;
+		slug: string;
+		name: string;
+		kind: string;
+		weapon: string | null;
+		pattern: string | null;
+		category: string | null;
+		rarity: string | null;
+		rarity_color: string | null;
+		image: string | null;
+		min_float: number | null;
+		max_float: number | null;
+		collections: string[] | null;
+	}[];
+	if (!skin) return null;
+	// Latest price per config and stream within the last 10 days, converted to EUR.
+	const configs = (await db.execute(sql`
+		WITH fx AS (SELECT usd_eur FROM cs.fx_rates ORDER BY day DESC LIMIT 1)
+		SELECT i.id, i.market_hash_name, i.phase, i.wear, i.stattrak, i.souvenir, i.icon_url,
+			coalesce((SELECT json_agg(json_build_object('stream', l.stream_id, 'cents', l.price_cents,
+				'eur_cents', CASE WHEN st.currency = 'USD'
+					THEN round(l.price_cents * coalesce((SELECT usd_eur FROM fx), 0.92))::int
+					ELSE l.price_cents END,
+				'volume', l.volume, 'day', l.day::text) ORDER BY l.stream_id)
+			FROM (SELECT DISTINCT ON (dp.stream_id) dp.stream_id, dp.price_cents, dp.volume, dp.day
+				FROM cs.daily_prices dp WHERE dp.item_id = i.id AND dp.day >= current_date - 10
+				ORDER BY dp.stream_id, dp.day DESC) l
+			JOIN cs.price_streams st ON st.id = l.stream_id), '[]'::json) AS prices
+		FROM cs.items i WHERE i.skin_id = ${skin.id}`)) as unknown as ConfigRow[];
+	configs.sort((a, b) => configRank(a) - configRank(b));
+	return { skin, configs };
+}
+
+/** Pick the config from ?v=&wear=&phase=, falling back to the cheapest priced normal config. */
+export function pickConfig(configs: ConfigRow[], params: URLSearchParams) {
+	const variant = params.get('v') as Variant | null;
+	const wear = shortToWear[params.get('wear') ?? ''] ?? null;
+	const phase = params.get('phase') || null;
+	// Default to the most traded normal config (most listings/sales across sources).
+	const liquidity = (row: ConfigRow) => row.prices.reduce((sum, p) => sum + (p.volume ?? 0), 0);
+	const fallback = () =>
+		configs
+			.filter((row) => row.prices.length && !row.phase && variantOf(row) === 'normal')
+			.sort((a, b) => liquidity(b) - liquidity(a))[0] ??
+		configs.find((row) => row.prices.length) ??
+		configs[0] ??
+		null;
+	if (!variant && !params.has('wear') && !params.has('phase')) return fallback();
+	const exact = configs.find(
+		(row) =>
+			(!variant || variantOf(row) === variant) &&
+			(params.has('wear') ? row.wear === wear : true) &&
+			(params.has('phase') ? row.phase === phase : !row.phase)
+	);
+	if (exact) return exact;
+	const near = configs.find(
+		(row) => (!variant || variantOf(row) === variant) && (!wear || row.wear === wear)
+	);
+	return near ?? fallback();
+}
+
+export type SeriesPoint = [string, number];
+
+/** Daily EUR series per stream for one config. Doppler phases also get the phase-blind
+ * listing's streams they lack (e.g. Steam has no phases), labelled as "any phase". */
+export async function loadSeries(config: ConfigRow, from: string | null) {
+	const ids = [config.id];
+	if (config.phase) {
+		const [base] = (await db.execute(sql`SELECT id FROM cs.items
+			WHERE market_hash_name = ${config.market_hash_name} AND phase IS NULL`)) as unknown as {
+			id: number;
+		}[];
+		if (base) ids.push(base.id);
+	}
+	const rows = (await db.execute(sql`
+		SELECT dp.item_id, dp.stream_id, dp.day::text AS day, dp.volume,
+			CASE WHEN st.currency = 'USD' THEN round(dp.price_cents * coalesce(
+				(SELECT usd_eur FROM cs.fx_rates f WHERE f.day <= dp.day ORDER BY f.day DESC LIMIT 1),
+				(SELECT usd_eur FROM cs.fx_rates ORDER BY day LIMIT 1), 0.92))::int
+			ELSE dp.price_cents END AS eur_cents
+		FROM cs.daily_prices dp JOIN cs.price_streams st ON st.id = dp.stream_id
+		WHERE dp.item_id IN (${sql.join(
+			ids.map((id) => sql`${id}`),
+			sql`,`
+		)}) ${from ? sql`AND dp.day >= ${from}::date` : sql``}
+		ORDER BY dp.day`)) as unknown as {
+		item_id: number;
+		stream_id: number;
+		day: string;
+		volume: number | null;
+		eur_cents: number;
+	}[];
+	const own = new Set(rows.filter((r) => r.item_id === config.id).map((r) => r.stream_id));
+	const series = new Map<string, { stream: number; anyPhase: boolean; points: SeriesPoint[] }>();
+	for (const row of rows) {
+		const anyPhase = row.item_id !== config.id;
+		if (anyPhase && own.has(row.stream_id)) continue;
+		const key = `${row.stream_id}:${anyPhase}`;
+		const entry = series.get(key) ?? { stream: Number(row.stream_id), anyPhase, points: [] };
+		entry.points.push([row.day, row.eur_cents]);
+		series.set(key, entry);
+	}
+	const windows = (await db.execute(sql`SELECT item_id, source, currency, span, median_cents,
+		avg_cents, min_cents, max_cents, volume FROM cs.price_windows
+		WHERE item_id IN (${sql.join(
+			ids.map((id) => sql`${id}`),
+			sql`,`
+		)})`)) as unknown as {
+		item_id: number;
+		source: string;
+		currency: string;
+		span: string;
+		median_cents: number | null;
+		avg_cents: number | null;
+		min_cents: number | null;
+		max_cents: number | null;
+		volume: number | null;
+	}[];
+	const [fx] = (await db.execute(
+		sql`SELECT usd_eur::float AS rate, day::text FROM cs.fx_rates ORDER BY day DESC LIMIT 1`
+	)) as unknown as { rate: number; day: string }[];
+	return {
+		series: [...series.values()],
+		windows: windows
+			.filter(
+				(w) =>
+					w.item_id === config.id ||
+					!windows.some((o) => o.item_id === config.id && o.source === w.source)
+			)
+			.map((w) => ({ ...w, anyPhase: w.item_id !== config.id })),
+		fx: fx ?? null
+	};
+}
+
+export { wearOrder, wearShort };

src/lib/server/db/schema/ai.ts

@@ -1,5 +1,13 @@
 import { sql } from 'drizzle-orm';
-import { check, date, doublePrecision, index, text, uniqueIndex } from 'drizzle-orm/pg-core';
+import {
+	check,
+	date,
+	doublePrecision,
+	index,
+	integer,
+	text,
+	uniqueIndex
+} from 'drizzle-orm/pg-core';
 import { aiSchema } from './schemas';
 import { id, timestamps, timestamptz } from './helpers';
 
@@ -82,3 +90,84 @@ export const aiUsageEntries = aiSchema.table(
 		check('usage_entries_metric_check', sql`length(btrim(${t.metric})) > 0`)
 	]
 );
+
+/**
+ * Setup tab (owner-only): how each AI provider is set up. One row per provider card; entries
+ * are grouped into sections. Plan/API keys are labels only: the app refuses values that look
+ * like a secret, and nothing here is ever a key value.
+ */
+export const AI_SETUP_SECTIONS = [
+	'connections',
+	'skills',
+	'instructions',
+	'plugins',
+	'routines',
+	'agents',
+	'plan',
+	'notes'
+] as const;
+export type AiSetupSection = (typeof AI_SETUP_SECTIONS)[number];
+export const AI_SETUP_SCOPES = ['global', 'per-repo', 'app'] as const;
+export type AiSetupScope = (typeof AI_SETUP_SCOPES)[number];
+export const AI_SETUP_COLORS = [
+	'orange',
+	'green',
+	'blue',
+	'violet',
+	'pink',
+	'sky',
+	'amber',
+	'zinc'
+] as const;
+
+export const aiSetupProviders = aiSchema.table(
+	'provider_setup_providers',
+	{
+		id: id(),
+		name: text('name').notNull(),
+		/** The products this card covers, e.g. "claude.ai + Claude Code". */
+		products: text('products'),
+		color: text('color').notNull().default('zinc'),
+		sortOrder: integer('sort_order').notNull().default(0),
+		...timestamps
+	},
+	(t) => [
+		uniqueIndex('provider_setup_providers_name_key').on(t.name),
+		check('provider_setup_providers_name_check', sql`length(btrim(${t.name})) > 0`),
+		check(
+			'provider_setup_providers_color_check',
+			sql`${t.color} IN ('orange','green','blue','violet','pink','sky','amber','zinc')`
+		)
+	]
+);
+
+export const aiSetupEntries = aiSchema.table(
+	'provider_setup_entries',
+	{
+		id: id(),
+		providerId: integer('provider_id')
+			.notNull()
+			.references(() => aiSetupProviders.id, { onDelete: 'cascade', onUpdate: 'cascade' }),
+		section: text('section').notNull(),
+		name: text('name').notNull(),
+		note: text('note'),
+		scope: text('scope'),
+		link: text('link'),
+		/** Free markdown text (custom instructions, longer notes). */
+		body: text('body'),
+		sortOrder: integer('sort_order').notNull().default(0),
+		...timestamps
+	},
+	(t) => [
+		index('provider_setup_entries_provider_idx').on(t.providerId, t.section, t.sortOrder),
+		check(
+			'provider_setup_entries_section_check',
+			sql`${t.section} IN ('connections','skills','instructions','plugins','routines','agents','plan','notes')`
+		),
+		check(
+			'provider_setup_entries_scope_check',
+			sql`${t.scope} IS NULL OR ${t.scope} IN ('global','per-repo','app')`
+		),
+		check('provider_setup_entries_name_check', sql`length(btrim(${t.name})) > 0`)
+	]
+);

src/lib/server/db/schema/cs-prices.ts

@@ -5,11 +5,45 @@ import {
 	text,
 	timestamp,
 	uniqueIndex,
-	bigint
+	bigint,
+	boolean,
+	date,
+	real,
+	smallint,
+	numeric
 } from 'drizzle-orm/pg-core';
+import { sql } from 'drizzle-orm';
 import { csSchema } from './schemas';
 import { id } from './helpers';
 
+// One finish or item, grouping all of its market configs (wear, StatTrak, Souvenir, phase).
+// Ids come from ByMykel/CSGO-API (skin_id / item id); items only seen in price feeds get `mkt-<slug>`.
+export const csSkins = csSchema.table(
+	'skins',
+	{
+		id: text('id').primaryKey(),
+		slug: text('slug').notNull(),
+		name: text('name').notNull(),
+		kind: text('kind').notNull(),
+		weapon: text('weapon'),
+		pattern: text('pattern'),
+		category: text('category'),
+		rarity: text('rarity'),
+		rarityColor: text('rarity_color'),
+		image: text('image'),
+		minFloat: real('min_float'),
+		maxFloat: real('max_float'),
+		collections: text('collections').array(),
+		source: text('source').notNull().default('bymykel'),
+		updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [
+		uniqueIndex('skins_slug_idx').on(table.slug),
+		index('skins_name_idx').on(table.name),
+		index('skins_kind_idx').on(table.kind)
+	]
+);
+
 // A Steam market hash name identifies a listing, including wear and special variants.
 export const csMarketItems = csSchema.table(
 	'items',
@@ -19,12 +53,20 @@ export const csMarketItems = csSchema.table(
 		name: text('name').notNull(),
 		iconUrl: text('icon_url'),
 		itemType: text('item_type'),
+		// Catalog link and config facets. Doppler phases share a market hash name, so a phase
+		// row is its own config next to the phase-less listing.
+		skinId: text('skin_id').references(() => csSkins.id, { onDelete: 'set null' }),
+		phase: text('phase'),
+		wear: text('wear'),
+		stattrak: boolean('stattrak').notNull().default(false),
+		souvenir: boolean('souvenir').notNull().default(false),
 		firstSeenAt: timestamp('first_seen_at', { withTimezone: true }).notNull().defaultNow(),
 		lastSeenAt: timestamp('last_seen_at', { withTimezone: true }).notNull().defaultNow()
 	},
 	(table) => [
-		uniqueIndex('items_hash_idx').on(table.marketHashName),
-		index('items_name_idx').on(table.name)
+		uniqueIndex('items_config_idx').on(table.marketHashName, sql`coalesce(${table.phase}, '')`),
+		index('items_name_idx').on(table.name),
+		index('items_skin_idx').on(table.skinId)
 	]
 );
 
@@ -82,9 +124,82 @@ export const csPriceStreams = csSchema.table(
 	{
 		source: text('source').notNull(),
 		currency: text('currency').notNull(),
-		kind: text('kind').notNull()
+		kind: text('kind').notNull(),
+		id: smallint('id').generatedByDefaultAsIdentity(),
+		label: text('label'),
+		lastFetchedAt: timestamp('last_fetched_at', { withTimezone: true }),
+		lastRows: integer('last_rows'),
+		lastError: text('last_error')
 	},
 	(table) => [
-		primaryKey({ name: 'price_streams_pkey', columns: [table.source, table.currency, table.kind] })
+		primaryKey({ name: 'price_streams_pkey', columns: [table.source, table.currency, table.kind] }),
+		uniqueIndex('price_streams_id_idx').on(table.id)
 	]
 );
+
+// One price per config per stream per UTC day (idempotent upsert). Prices stay in the stream's
+// own currency; fx_rates converts USD streams to EUR for display.
+export const csDailyPrices = csSchema.table(
+	'daily_prices',
+	{
+		itemId: integer('item_id')
+			.notNull()
+			.references(() => csMarketItems.id, { onDelete: 'cascade' }),
+		streamId: smallint('stream_id').notNull(),
+		day: date('day').notNull(),
+		priceCents: integer('price_cents').notNull(),
+		volume: integer('volume')
+	},
+	(table) => [
+		primaryKey({ name: 'daily_prices_pkey', columns: [table.itemId, table.streamId, table.day] }),
+		index('daily_prices_day_idx').on(table.day, table.streamId)
+	]
+);
+
+// Rolling sale aggregates (24h/7d/30d/90d) as reported by the source, latest snapshot only.
+export const csPriceWindows = csSchema.table(
+	'price_windows',
+	{
+		itemId: integer('item_id')
+			.notNull()
+			.references(() => csMarketItems.id, { onDelete: 'cascade' }),
+		source: text('source').notNull(),
+		currency: text('currency').notNull(),
+		span: text('span').notNull(),
+		medianCents: integer('median_cents'),
+		avgCents: integer('avg_cents'),
+		minCents: integer('min_cents'),
+		maxCents: integer('max_cents'),
+		volume: integer('volume'),
+		updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow()
+	},
+	(table) => [
+		primaryKey({
+			name: 'price_windows_pkey',
+			columns: [table.itemId, table.source, table.span]
+		})
+	]
+);
+
+export const csFxRates = csSchema.table('fx_rates', {
+	day: date('day').primaryKey(),
+	usdEur: numeric('usd_eur', { precision: 12, scale: 8 }).notNull()
+});
+
+// Backfill bookkeeping (scripts/cs-history.ts): which config was fetched from which history
+// source, so the slow, throttled backfill can resume. History rows themselves live in
+// daily_prices under their own streams (kind ending in `-history`).
+export const csHistoryFetches = csSchema.table(
+	'history_fetches',
+	{
+		itemId: integer('item_id')
+			.notNull()
+			.references(() => csMarketItems.id, { onDelete: 'cascade' }),
+		source: text('source').notNull(),
+		fetchedAt: timestamp('fetched_at', { withTimezone: true }).notNull().defaultNow(),
+		points: integer('points').notNull().default(0),
+		firstDay: date('first_day'),
+		error: text('error')
+	},
+	(table) => [primaryKey({ name: 'history_fetches_pkey', columns: [table.itemId, table.source] })]
+);

src/lib/server/db/schema/index.ts

@@ -33,3 +33,4 @@ export * from './movies';
 export * from './worldtodo';
 export * from './osu-goals';
 export * from './notes';
+export * from './math';

src/lib/server/db/schema/math.ts

@@ -0,0 +1,112 @@
+import { sql } from 'drizzle-orm';
+import { check, index, integer, text, uniqueIndex } from 'drizzle-orm/pg-core';
+import { mathSchema } from './schemas';
+import { id, timestamps, timestamptz } from './helpers';
+
+// Math tracker (/trackers/math): working through Evan Chen's "An Infinitely Large Napkin".
+// Parts and chapters (with sections) are seeded from the book's outline in the migration.
+// Progress lives on the chapter rows; triggers (in the migration) keep started_at/completed_at
+// and log every status / exercise / note / section change to `activity`. Bots and scripts
+// update progress with `select math.apply_progress('{"chapter":"3","status":"done"}')` or a
+// plain UPDATE (both are logged). Prereqs are hints only, never locks.
+
+// Statuses (kept in sync with MATH_STATUSES in #lib/math; the schema folder must not import
+// from outside it): not_started, reading, exercises, done, skipped.
+
+export const mathParts = mathSchema.table(
+	'parts',
+	{
+		id: id(),
+		/** "1".."22" or "appendix". */
+		key: text('key').notNull(),
+		/** Part number; null for the appendix. */
+		num: integer('num'),
+		title: text('title').notNull(),
+		sortOrder: integer('sort_order').notNull()
+	},
+	(t) => [uniqueIndex('parts_key_key').on(t.key)]
+);
+
+export const mathChapters = mathSchema.table(
+	'chapters',
+	{
+		id: id(),
+		/** Chapter number as text ("0".."94") or the appendix letter ("A".."E"). */
+		key: text('key').notNull(),
+		partId: integer('part_id')
+			.notNull()
+			.references(() => mathParts.id, { onDelete: 'cascade', onUpdate: 'cascade' }),
+		title: text('title').notNull(),
+		/** PDF pages of the free Napkin.pdf (link with #page=N). */
+		pageStart: integer('page_start').notNull(),
+		pageEnd: integer('page_end').notNull(),
+		/** Problems at the end of the chapter; null when the chapter has none. */
+		exerciseCount: integer('exercise_count'),
+		/** Chapter keys this one builds on (approximate, from the book's dependency chart). */
+		prereqs: text('prereqs')
+			.array()
+			.notNull()
+			.default(sql`'{}'::text[]`),
+		status: text('status').notNull().default('not_started'),
+		exercisesDone: integer('exercises_done').notNull().default(0),
+		notes: text('notes'),
+		startedAt: timestamptz('started_at'),
+		completedAt: timestamptz('completed_at'),
+		sortOrder: integer('sort_order').notNull(),
+		...timestamps
+	},
+	(t) => [
+		uniqueIndex('chapters_key_key').on(t.key),
+		index('chapters_part_idx').on(t.partId, t.sortOrder),
+		check(
+			'chapters_status_check',
+			sql`${t.status} IN ('not_started','reading','exercises','done','skipped')`
+		),
+		check('chapters_exercises_done_check', sql`${t.exercisesDone} >= 0`)
+	]
+);
+
+export const mathSections = mathSchema.table(
+	'sections',
+	{
+		id: id(),
+		chapterId: integer('chapter_id')
+			.notNull()
+			.references(() => mathChapters.id, { onDelete: 'cascade', onUpdate: 'cascade' }),
+		/** Section number, e.g. "3.2" (or "D.1"). */
+		key: text('key').notNull(),
+		title: text('title').notNull(),
+		sortOrder: integer('sort_order').notNull(),
+		/** Optional per-section tick. */
+		doneAt: timestamptz('done_at')
+	},
+	(t) => [uniqueIndex('sections_chapter_key_key').on(t.chapterId, t.key)]
+);
+
+export const mathActivity = mathSchema.table(
+	'activity',
+	{
+		id: id(),
+		chapterId: integer('chapter_id')
+			.notNull()
+			.references(() => mathChapters.id, { onDelete: 'cascade', onUpdate: 'cascade' }),
+		sectionId: integer('section_id').references(() => mathSections.id, {
+			onDelete: 'set null',
+			onUpdate: 'cascade'
+		}),
+		/** status | exercises | note | section */
+		kind: text('kind').notNull(),
+		fromValue: text('from_value'),
+		toValue: text('to_value'),
+		/** exercises: done count change. */
+		delta: integer('delta'),
+		/** site | bot | sql (from the math.source setting, see math.apply_progress). */
+		source: text('source').notNull().default('sql'),
+		createdAt: timestamptz('created_at').notNull().defaultNow()
+	},
+	(t) => [
+		index('activity_created_idx').on(t.createdAt),
+		index('activity_chapter_idx').on(t.chapterId, t.createdAt),
+		check('activity_kind_check', sql`${t.kind} IN ('status','exercises','note','section')`)
+	]
+);

src/lib/server/db/schema/schemas.ts

@@ -29,3 +29,4 @@ export const aiSchema = pgSchema('ai');
 export const moviesSchema = pgSchema('movies');
 export const worldtodoSchema = pgSchema('worldtodo');
 export const notesSchema = pgSchema('notes');
+export const mathSchema = pgSchema('math');

src/lib/server/db/schema/worldtodo.ts

@@ -25,6 +25,7 @@ const WORLDTODO_SCALES = ['planet', 'region', 'country', 'city', 'street'] as co
 const WORLDTODO_STATUSES = ['open', 'in_progress', 'done'] as const;
 const WORLDTODO_REQUEST_KINDS = ['add', 'edit', 'delete'] as const;
 const WORLDTODO_REQUEST_STATUSES = ['pending', 'approved', 'rejected'] as const;
+const WORLDTODO_LOCATION_PRECISIONS = ['exact', 'approximate', 'none'] as const;
 
 const tsvector = customType<{ data: string }>({ dataType: () => 'tsvector' });
 
@@ -36,6 +37,11 @@ export const worldtodoRequestStatus = worldtodoSchema.enum(
 	WORLDTODO_REQUEST_STATUSES
 );
 
+export const worldtodoLocationPrecision = worldtodoSchema.enum(
+	'location_precision',
+	WORLDTODO_LOCATION_PRECISIONS
+);
+
 export const worldtodoCategories = worldtodoSchema.table('categories', {
 	slug: text('slug').primaryKey(),
 	label: text('label').notNull(),
@@ -61,6 +67,13 @@ export const worldtodoTasks = worldtodoSchema.table(
 		countryCode: text('country_code'),
 		lat: doublePrecision('lat'),
 		lon: doublePrecision('lon'),
+		/**
+		 * How the map treats lat/lon: street and city tasks are exact pins, region and country
+		 * pins sit at a rough centre, planet tasks (or no coordinates) get no pin. Set from scale
+		 * and lat/lon by the tasks_location_precision trigger (hand-written in the migration), so
+		 * it never drifts from the data.
+		 */
+		locationPrecision: worldtodoLocationPrecision('location_precision'),
 		status: worldtodoStatus('status').notNull().default('open'),
 		sourceUrls: text('source_urls').array().notNull(),
 		/** Date of the main source as given ('2026-09', '2026-10-21'). */

src/lib/server/enable-banking.ts

@@ -48,7 +48,11 @@ export type BankTransaction = {
 	creditor_account?: { iban?: string | null } | null;
 	debtor_account?: { iban?: string | null } | null;
 	remittance_information?: string[] | null;
-	bank_transaction_code?: { description?: string | null } | null;
+	bank_transaction_code?: {
+		code?: string | null;
+		sub_code?: string | null;
+		description?: string | null;
+	} | null;
 	merchant_category_code?: string | null;
 	note?: string | null;
 	[key: string]: unknown;

src/lib/server/goal-metrics/core.ts

@@ -23,6 +23,10 @@ export type GoalMetricDetail = {
 export type GoalMetricResult = { value: number; detail: GoalMetricDetail };
 
 export const SIDE_INCOME_SOURCE = 'moneybird-side-income-t12m';
+/** money.transactions.category values that count as investment income (agreed with MoneyMan).
+ *  Dividends, interest (incl. Revolut savings interest) and distributions are recorded as one
+ *  of these; deposits, transfers, investment sales and unrealised gains are NOT. */
+export const INVESTMENT_INCOME_CATEGORIES = ['dividend', 'interest'];
 const TZ = 'Europe/Amsterdam';
 
 type SourceRow = {
@@ -54,6 +58,18 @@ async function ownNetIncomeMonthly(sql: Sql): Promise<GoalMetricResult> {
 		select value, detail, computed_at, error from tasks.metric_sources
 		where key = ${SIDE_INCOME_SOURCE}`;
 
+	// Investment income: trailing 12 months of money.transactions with amount_cents > 0 and
+	// category in INVESTMENT_INCOME_CATEGORIES, on any account except Joint (shared), ÷ 12.
+	const [inv] = await sql<{ cents: string; n: number }[]>`
+		select coalesce(sum(t.amount_cents), 0) as cents, count(*)::int as n
+		from money.transactions t
+		join money.accounts a on a.id = t.account_id
+		where t.amount_cents > 0
+			and t.category = any(${INVESTMENT_INCOME_CATEGORIES})
+			and a.scope <> 'joint'
+			and t.date > ((now() at time zone ${TZ})::date - interval '12 months')
+			and t.date <= (now() at time zone ${TZ})::date`;
+
 	const parts: GoalMetricPart[] = rows.map((r) => ({
 		key: `recurring-${r.id}`,
 		label: r.name,
@@ -71,6 +87,12 @@ async function ownNetIncomeMonthly(sql: Sql): Promise<GoalMetricResult> {
 				: 'not fetched yet',
 		asOf: src?.computed_at ? new Date(src.computed_at).toISOString() : null
 	});
+	parts.push({
+		key: 'investment-income',
+		label: 'Investment income',
+		value: round2(Number(inv?.cents ?? 0) / 100 / 12),
+		note: `${inv?.n ?? 0} dividend/interest payments, last 12 months ÷ 12`
+	});
 	return {
 		value: round2(parts.reduce((s, p) => s + p.value, 0)),
 		detail: {
@@ -87,7 +109,7 @@ export const GOAL_METRICS: Record<
 	{ label: string; compute: (sql: Sql) => Promise<GoalMetricResult> }
 > = {
 	'own-net-income-monthly': {
-		label: 'Own net income / month (salary + side income)',
+		label: 'Own net income / month (salary + side + investment income)',
 		compute: ownNetIncomeMonthly
 	}
 };

src/lib/server/investment-income.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'vitest';
+import { investmentIncomeCategory as cat } from './investment-income';
+
+const pos = (texts: string[], kind?: string) => cat({ amountCents: 123, kind, texts });
+
+describe('investment income tagging', () => {
+	it('tags interest payouts from real and Revolut wording', () => {
+		for (const text of [
+			'Interest',
+			'Knab: Rente',
+			'Interest PAID EUR Class R IE000AZVL3K0',
+			'Savings Interest',
+			'Savings vault interest',
+			'Gross interest',
+			'Net interest',
+			'Interest earned',
+			'Rentebijschrijving'
+		])
+			expect(pos([text]), text).toBe('interest');
+		expect(pos(['Revolut'], 'Interest')).toBe('interest');
+		expect(pos(['Revolut', 'Interest earned on your Savings'], 'TRANSFER')).toBe('interest');
+	});
+	it('tags dividend payouts', () => {
+		expect(pos(['Dividend Payment: GOOGL'])).toBe('dividend');
+		expect(pos(['VWRL dividend'])).toBe('dividend');
+		expect(pos(['Dividenduitkering'])).toBe('dividend');
+		expect(pos(['Broker'], 'DIVIDEND')).toBe('dividend');
+	});
+	it('ignores costs, reinvestments, card rows and look-alikes', () => {
+		expect(cat({ amountCents: -1043, texts: ['Interest Reinvested Class R EUR'] })).toBeNull();
+		expect(cat({ amountCents: -2, texts: ['Service Fee Charged EUR Class'] })).toBeNull();
+		expect(cat({ amountCents: -500, texts: ['Dividend tax'] })).toBeNull();
+		expect(cat({ amountCents: 0, texts: ['Interest'] })).toBeNull();
+		expect(pos(['Interest Cafe'], 'Card Refund')).toBeNull();
+		expect(pos(['Interest Cafe Utrecht'])).toBeNull();
+		expect(pos(['From Juhee'])).toBeNull();
+		expect(pos(['Tikkie: Rente lening terug'])).toBeNull();
+		expect(pos(['Rentenaar BV'])).toBeNull();
+		expect(pos(['Salaris Cargill'])).toBeNull();
+	});
+});

src/lib/server/investment-income.ts

@@ -0,0 +1,49 @@
+// Tags investment income on import so the €10k/month goal bar (goal-metrics/core.ts,
+// INVESTMENT_INCOME_CATEGORIES) can find it: positive interest payouts -> 'interest',
+// positive dividend payouts -> 'dividend'. Pure, shared by the bank sync and statement imports.
+
+export type IncomeCategory = 'interest' | 'dividend';
+
+/** Revolut "Type" / bank transaction codes that are never income payouts. */
+const NOT_INCOME_KIND = /^(card[ _-]?(payment|refund)|exchange|atm|fee|charge)$/i;
+
+const DIVIDEND = /\bdividend(?:s|en|uitkering)?\b/i;
+
+/**
+ * Interest wording seen in real rows and Revolut exports:
+ *   "Interest" (ABN), "Knab: Rente", Revolut "Interest PAID EUR Class R IE000…",
+ *   "Savings Interest", "Savings vault interest", "Gross/Net interest", "Rentebijschrijving".
+ * Payout-only: "Interest Reinvested" / "Service Fee Charged" are negative and so never match.
+ */
+const INTEREST = [
+	// Whole description is (a bank prefix plus) the word interest/rente, optionally qualified.
+	/^(?:[\p{L}0-9 .&'-]{1,30}:\s*)?(?:(?:gross|net|savings|vault|credit)\s+)?(?:interest|rente|creditrente)(?:\s+(?:paid|earned|payout|payment|credited|bijschrijving|uitbetaling)\b.*)?$/iu,
+	/^interest\s+paid\b/i,
+	/\b(?:savings|vault|pocket|spaar)\s*(?:account\s+)?interest\b/i,
+	/\binterest\s+(?:earned|payout|credited)\b/i,
+	/\brente(?:bijschrijving|uitkering|vergoeding)\b/i
+];
+
+export type IncomeInput = {
+	amountCents: number;
+	/** Revolut statement "Type" or the bank's transaction code. */
+	kind?: string | null;
+	/** Description, remittance lines, bank code description, note… */
+	texts: (string | null | undefined)[];
+};
+
+export function investmentIncomeCategory({
+	amountCents,
+	kind,
+	texts
+}: IncomeInput): IncomeCategory | null {
+	if (!(amountCents > 0)) return null;
+	const k = kind?.trim() ?? '';
+	if (k && NOT_INCOME_KIND.test(k)) return null;
+	if (DIVIDEND.test(k)) return 'dividend';
+	if (/\binterest\b/i.test(k)) return 'interest';
+	const lines = texts.map((t) => t?.replace(/\s+/g, ' ').trim()).filter((t): t is string => !!t);
+	if (lines.some((t) => DIVIDEND.test(t))) return 'dividend';
+	if (lines.some((t) => INTEREST.some((re) => re.test(t)))) return 'interest';
+	return null;
+}

src/lib/server/math.ts

@@ -0,0 +1,134 @@
+// Math tracker (/trackers/math): loads the Napkin outline with progress, and applies progress
+// updates through math.apply_progress (the same JSON format bots use, see the migration).
+import { client } from '#lib/server/db/index.js';
+import { MATH_STATUSES, type MathStatus } from '#lib/math.js';
+import * as z from 'zod';
+
+export type MathSection = { id: number; key: string; title: string; done: boolean };
+export type MathChapter = {
+	id: number;
+	key: string;
+	partKey: string;
+	title: string;
+	pageStart: number;
+	pageEnd: number;
+	exerciseCount: number | null;
+	prereqs: string[];
+	status: MathStatus;
+	exercisesDone: number;
+	notes: string | null;
+	startedAt: string | null;
+	completedAt: string | null;
+	updatedAt: string;
+	sections: MathSection[];
+};
+export type MathPart = { key: string; num: number | null; title: string };
+export type MathActivity = {
+	id: number;
+	chapterKey: string;
+	chapterTitle: string;
+	sectionKey: string | null;
+	kind: 'status' | 'exercises' | 'note' | 'section';
+	fromValue: string | null;
+	toValue: string | null;
+	delta: number | null;
+	source: string;
+	at: string;
+};
+
+const iso = (d: Date | string | null) => (d ? new Date(d).toISOString() : null);
+
+export async function loadMath(owner: boolean) {
+	const [parts, chapters, sections, activity] = await Promise.all([
+		client`SELECT key, num, title FROM math.parts ORDER BY sort_order`,
+		client`SELECT c.id, c.key, p.key AS part_key, c.title, c.page_start, c.page_end,
+				c.exercise_count, c.prereqs, c.status, c.exercises_done, c.notes,
+				c.started_at, c.completed_at, c.updated_at
+			FROM math.chapters c JOIN math.parts p ON p.id = c.part_id
+			ORDER BY c.sort_order`,
+		client`SELECT id, chapter_id, key, title, done_at FROM math.sections
+			ORDER BY chapter_id, sort_order`,
+		client`SELECT a.id, c.key AS chapter_key, c.title AS chapter_title, s.key AS section_key,
+				a.kind, a.from_value, a.to_value, a.delta, a.source, a.created_at
+			FROM math.activity a
+			JOIN math.chapters c ON c.id = a.chapter_id
+			LEFT JOIN math.sections s ON s.id = a.section_id
+			ORDER BY a.created_at DESC, a.id DESC LIMIT 25`
+	]);
+	const byChapter = new Map<number, MathSection[]>();
+	for (const s of sections) {
+		const list = byChapter.get(s.chapter_id) ?? [];
+		list.push({ id: s.id, key: s.key, title: s.title, done: !!s.done_at });
+		byChapter.set(s.chapter_id, list);
+	}
+	return {
+		parts: parts.map((p) => ({ key: p.key, num: p.num, title: p.title }) as MathPart),
+		chapters: chapters.map((c): MathChapter => ({
+			id: c.id,
+			key: c.key,
+			partKey: c.part_key,
+			title: c.title,
+			pageStart: c.page_start,
+			pageEnd: c.page_end,
+			exerciseCount: c.exercise_count,
+			prereqs: c.prereqs ?? [],
+			status: c.status,
+			exercisesDone: c.exercises_done,
+			notes: owner ? c.notes : null,
+			startedAt: iso(c.started_at),
+			completedAt: iso(c.completed_at),
+			updatedAt: iso(c.updated_at)!,
+			sections: byChapter.get(c.id) ?? []
+		})),
+		activity: activity
+			.filter((a) => owner || a.kind !== 'note')
+			.map((a): MathActivity => ({
+				id: a.id,
+				chapterKey: a.chapter_key,
+				chapterTitle: a.chapter_title,
+				sectionKey: a.section_key,
+				kind: a.kind,
+				fromValue: a.kind === 'note' && !owner ? null : a.from_value,
+				toValue: a.kind === 'note' && !owner ? null : a.to_value,
+				delta: a.delta,
+				source: a.source,
+				at: iso(a.created_at)!
+			}))
+	};
+}
+
+const progressInput = z
+	.object({
+		chapter: z.string().trim().min(1).max(4),
+		status: z.enum(MATH_STATUSES).optional(),
+		exercises_add: z.coerce.number().int().min(-50).max(50).optional(),
+		exercises_done: z.coerce.number().int().min(0).max(500).optional(),
+		notes: z.string().max(2000).optional(),
+		section: z.string().trim().max(12).optional(),
+		section_done: z.enum(['1', '0']).optional()
+	})
+	.strict();
+
+/** One owner update from the page (form fields), applied as a math.apply_progress JSON. */
+export async function applyFromForm(form: FormData) {
+	const raw: Record<string, string> = {};
+	for (const [k, v] of form) if (typeof v === 'string' && v !== '') raw[k] = v;
+	if (form.has('notes')) raw.notes = String(form.get('notes') ?? '');
+	const parsed = progressInput.safeParse(raw);
+	if (!parsed.success) return { ok: false as const, message: 'Invalid update' };
+	const p = parsed.data;
+	const json: Record<string, unknown> = { chapter: p.chapter, source: 'site' };
+	if (p.status) json.status = p.status;
+	if (p.exercises_add !== undefined) json.exercises_add = p.exercises_add;
+	if (p.exercises_done !== undefined) json.exercises_done = p.exercises_done;
+	if (p.notes !== undefined) json.notes = p.notes;
+	if (p.section) json[p.section_done === '0' ? 'sections_undone' : 'sections_done'] = [p.section];
+	try {
+		await client`SELECT math.apply_progress(${JSON.stringify(json)}::jsonb)`;
+		return { ok: true as const };
+	} catch (e) {
+		const msg = e instanceof Error ? e.message : '';
+		if (msg.includes('unknown chapter')) return { ok: false as const, message: 'Unknown chapter' };
+		throw e;
+	}
+}

src/lib/server/owner.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from 'vitest';
 import { isOwner, isOwnerOnlyPath, isOwnerWritePath } from './owner';
+import { MATH_PRIVATE } from '#lib/math.js';
 
 const event = (user: Partial<NonNullable<App.Locals['user']>> | null) =>
 	({ locals: { user, session: null } }) as unknown as { locals: App.Locals };
@@ -37,6 +38,11 @@ describe('owner gate', () => {
 		expect(isOwnerOnlyPath('/trackers/books/covers/12')).toBe(false);
 		expect(isOwnerOnlyPath('/trackers/books/12/reader-notes-public')).toBe(false);
 	});
+	it('gates the math tracker while MATH_PRIVATE is on; writes are always owner-only', () => {
+		expect(isOwnerOnlyPath('/trackers/math')).toBe(MATH_PRIVATE);
+		expect(isOwnerOnlyPath('/trackers/math/__data.json')).toBe(MATH_PRIVATE);
+		expect(isOwnerWritePath('/trackers/math')).toBe(true);
+	});
 	it('only lets the owner write in owner areas', () => {
 		expect(isOwnerWritePath('/trackers/books/12')).toBe(true);
 		expect(isOwnerWritePath('/trackers/books')).toBe(true);

src/lib/server/owner.ts

@@ -1,4 +1,5 @@
 import { error } from '@sveltejs/kit';
+import { MATH_PRIVATE } from '#lib/math.js';
 
 // The site has exactly one owner: Stan's account (prod auth.user id tfn6OZDOpiQvMARIH65HQ2XJuaVvmGEe).
 // Owner-only data, such as the health tracker, is gated on that account's email, not on
@@ -29,15 +30,18 @@ export const ownerOnlyPrefixes = [
 	'/trackers/books/files',
 	// Notes (the Obsidian vault): pages, API, attachments. The /ws/notes socket checks the owner itself.
 	'/trackers/notes',
-	// AI tracker: the news tab (/trackers/ai) is public, bots and usage are mine only.
+	// AI tracker: the news tab (/trackers/ai) is public, bots, usage and setup are mine only.
 	'/trackers/ai/bots',
 	'/trackers/ai/usage',
+	'/trackers/ai/setup',
 	'/lists/db',
 	// Spotify OAuth for the listening tracker (connect + callback 404 for everyone else).
 	'/api/spotify',
 	// Worldwide todo list: the list is public, the review queue and its API are mine only.
 	'/projects/worldwide-todo/queue',
-	'/projects/worldwide-todo/api/queue'
+	'/projects/worldwide-todo/api/queue',
+	// Math tracker (the Napkin): owner-only while MATH_PRIVATE (#lib/math) is on.
+	...(MATH_PRIVATE ? (['/trackers/math'] as const) : [])
 ] as const;
 
 /**
@@ -66,7 +70,8 @@ export const ownerWritePrefixes = [
 	'/trackers/pc',
 	'/trackers/notes',
 	'/trackers/ai',
-	'/trackers/movies'
+	'/trackers/movies',
+	'/trackers/math'
 ] as const;
 
 const normalise = (pathname: string) => pathname.toLowerCase().replace(/\/+$/, '');

src/lib/server/revolut-statement.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from 'vitest';
 import {
+	statementCategory,
 	checkBalances,
 	parseAmount,
 	parseRevolutCsv,
@@ -21,6 +22,19 @@ Card Payment,Current,2025-08-05 10:00:00,2025-08-05 11:00:00,Kiosk,-3.50,0.00,EU
 `;
 
 describe('revolut statement', () => {
+	it('tags interest and dividend rows by type or description', () => {
+		const row = (type: string, description: string, amountCents = 512) => ({
+			type,
+			description,
+			amountCents
+		});
+		expect(statementCategory(row('Interest', 'Savings vault interest'))).toBe('interest');
+		expect(statementCategory(row('', 'Interest PAID EUR Class R IE000AZVL3K0'))).toBe('interest');
+		expect(statementCategory(row('Dividend', 'VWRL'))).toBe('dividend');
+		expect(statementCategory(row('Transfer', 'To EUR Savings', -10000))).toBeNull();
+		expect(statementCategory(row('Card Payment', 'Interest Cafe'))).toBeNull();
+		expect(statementCategory(row('Transfer', 'From Juhee'))).toBeNull();
+	});
 	it('parses amounts in both notations', () => {
 		expect(parseAmount('1,234.56')).toBe(123456);
 		expect(parseAmount('-1.234,56')).toBe(-123456);

src/lib/server/revolut-statement.ts

@@ -1,3 +1,5 @@
+import { investmentIncomeCategory } from './investment-income';
+
 // Revolut account statement parsing + import planning (pure; DB work is in scripts/revolut-import.ts).
 // Handles the app's CSV export (English or Dutch headers, , or ; separated), the Excel export
 // (rows passed in as a string table) and, defensively, the text of the PDF statement.
@@ -341,3 +343,12 @@ export function statementExternalId(row: StatementRow, hash: (s: string) => stri
 		).slice(0, 24)
 	);
 }
+
+/** 'interest' / 'dividend' for a statement row that pays investment income, else null. */
+export function statementCategory(row: Pick<StatementRow, 'amountCents' | 'type' | 'description'>) {
+	return investmentIncomeCategory({
+		amountCents: row.amountCents,
+		kind: row.type,
+		texts: [row.description]
+	});
+}

src/lib/server/worldtodo/store.ts

@@ -6,6 +6,7 @@ import {
 	EDITABLE_FIELDS,
 	RESERVED_SLUGS,
 	changedFields,
+	precisionFor,
 	type Category,
 	type PublicTask,
 	type RequestKind,
@@ -18,7 +19,8 @@ import {
 
 const TASK_COLUMNS = sql`
 	t.id, t.slug, t.title, t.description, t.scale::text as scale, t.category,
-	t.location_name, t.country_code, t.lat, t.lon, t.status::text as status, t.source_urls,
+	t.location_name, t.country_code, t.lat, t.lon, t.location_precision::text as location_precision,
+	t.status::text as status, t.source_urls,
 	t.source_date, t.confidence, t.verification_note, t.as_of::text as as_of,
 	t.created_at, t.updated_at, t.deleted_at`;
 
@@ -38,17 +40,23 @@ function toDate(v: unknown): Date | null {
 const iso = (v: unknown) => toDate(v)?.toISOString() ?? '';
 
 export function toTask(r: Row): PublicTask {
+	const lat = r.lat === null || r.lat === undefined ? null : Number(r.lat);
+	const lon = r.lon === null || r.lon === undefined ? null : Number(r.lon);
+	const scale = r.scale as PublicTask['scale'];
 	return {
 		id: Number(r.id),
 		slug: String(r.slug),
 		title: String(r.title),
 		description: String(r.description),
-		scale: r.scale as PublicTask['scale'],
+		scale,
 		category: String(r.category),
 		locationName: String(r.location_name),
 		countryCode: (r.country_code as string | null) ?? null,
-		lat: r.lat === null || r.lat === undefined ? null : Number(r.lat),
-		lon: r.lon === null || r.lon === undefined ? null : Number(r.lon),
+		lat,
+		lon,
+		locationPrecision:
+			(r.location_precision as PublicTask['locationPrecision'] | null) ??
+			precisionFor(scale, lat, lon),
 		status: r.status as PublicTask['status'],
 		sourceUrls: (r.source_urls as string[]) ?? [],
 		sourceDate: (r.source_date as string | null) ?? null,

src/lib/tracker-icons.ts

@@ -96,6 +96,13 @@ export const trackerIcons: Record<string, TrackerIcon> = {
 			'M20 3v4M22 5h-4M4 17v2M5 18H3'
 		]
 	},
+	math: {
+		from: '#60a5fa',
+		to: '#1e40af',
+		ink: WHITE,
+		// sigma
+		paths: ['M18 7V4H6l6 8-6 8h12v-3']
+	},
 	notes: {
 		from: '#fde68a',
 		to: '#f59e0b',

src/lib/worldtodo/MapPicker.svelte

@@ -0,0 +1,155 @@
+<script lang="ts">
+	import 'leaflet/dist/leaflet.css';
+	import type * as Leaflet from 'leaflet';
+	import { untrack } from 'svelte';
+	import { addThemedTiles, loadLeaflet } from './tiles';
+	import MapPin from 'lucide-svelte/icons/map-pin';
+
+	// Optional "Pick on map" for the request form: a click fills the latitude/longitude inputs
+	// (5 decimals, about a metre). The coordinates travel in the change request, so the owner
+	// sees them in the queue before anything is applied.
+	let { lat = $bindable(''), lon = $bindable('') }: { lat?: string; lon?: string } = $props();
+
+	let open = $state(false);
+	let el = $state<HTMLDivElement>();
+	let L: typeof Leaflet | null = null;
+	let map: Leaflet.Map | null = null;
+	let marker: Leaflet.CircleMarker | null = null;
+
+	const parsed = () => {
+		const a = Number(lat);
+		const b = Number(lon);
+		return lat !== '' && lon !== '' && Math.abs(a) <= 90 && Math.abs(b) <= 180
+			? ([a, b] as [number, number])
+			: null;
+	};
+
+	function place(at: [number, number] | null) {
+		if (!map || !L) return;
+		if (!at) {
+			marker?.remove();
+			marker = null;
+			return;
+		}
+		if (marker) marker.setLatLng(at);
+		else
+			marker = L.circleMarker(at, {
+				radius: 8,
+				color: '#fff',
+				weight: 2,
+				fillColor: '#ea580c',
+				fillOpacity: 1
+			}).addTo(map);
+	}
+
+	$effect(() => {
+		if (!open || !el) return;
+		const node = el;
+		let disposed = false;
+		let stopTiles = () => {};
+		loadLeaflet().then((Lf) => {
+			if (disposed) return;
+			L = Lf;
+			const start = untrack(parsed);
+			const m = Lf.map(node, { scrollWheelZoom: false, worldCopyJump: true, minZoom: 1 });
+			map = m;
+			stopTiles = addThemedTiles(Lf, m);
+			if (start) m.setView(start, 12);
+			else m.setView([30, 10], 1);
+			m.on('focus', () => m.scrollWheelZoom.enable());
+			m.on('blur', () => m.scrollWheelZoom.disable());
+			m.on('click', (e: Leaflet.LeafletMouseEvent) => {
+				m.scrollWheelZoom.enable();
+				const w = e.latlng.wrap();
+				lat = w.lat.toFixed(5);
+				lon = w.lng.toFixed(5);
+			});
+			untrack(() => place(start));
+		});
+		return () => {
+			disposed = true;
+			stopTiles();
+			map?.remove();
+			map = null;
+			marker = null;
+		};
+	});
+	// Typed coordinates move the marker too.
+	$effect(() => {
+		void lat;
+		void lon;
+		untrack(() => place(parsed()));
+	});
+</script>
+
+<div class="picker">
+	<button type="button" class="toggle" aria-expanded={open} onclick={() => (open = !open)}>
+		<MapPin size={14} aria-hidden="true" />{open ? 'Hide map' : 'Pick on map'}
+	</button>
+	{#if lat || lon}
+		<button
+			type="button"
+			class="toggle"
+			onclick={() => {
+				lat = '';
+				lon = '';
+			}}>Clear position</button
+		>
+	{/if}
+	{#if open}
+		<div class="mini" bind:this={el} aria-label="Click the map to set the position"></div>
+		<p class="help">
+			Click where the problem is; zoom in for a street. This fills the fields above.
+		</p>
+	{/if}
+</div>
+
+<style>
+	/* Keyless fallback (OSM tiles) darkened to sit in the dark theme. */
+	:global(.wt-tiles-dim) {
+		filter: invert(1) hue-rotate(180deg) brightness(0.85) contrast(0.9) saturate(0.6);
+	}
+	.picker {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.4rem;
+		margin-top: 0.5rem;
+	}
+	.toggle {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.35rem;
+		padding: 0.3rem 0.7rem;
+		border: 1px solid var(--site-border);
+		border-radius: 999px;
+		background: transparent;
+		color: var(--site-text);
+		font-size: 0.78rem;
+		cursor: pointer;
+	}
+	.toggle:hover,
+	.toggle:focus-visible {
+		border-color: var(--site-text);
+	}
+	.mini {
+		flex-basis: 100%;
+		height: 260px;
+		border: 1px solid var(--site-border);
+		border-radius: 0.7rem;
+		overflow: hidden;
+		background: #0e0e0e;
+		cursor: crosshair;
+		z-index: 0;
+	}
+	.mini :global(.leaflet-container) {
+		cursor: crosshair;
+	}
+	.mini :global(.leaflet-control-attribution) {
+		font-size: 0.6rem;
+	}
+	.help {
+		flex-basis: 100%;
+		font-size: 0.72rem;
+		color: var(--site-muted);
+	}
+</style>

src/lib/worldtodo/TaskFieldsEditor.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { untrack } from 'svelte';
 	import IconTile from './IconTile.svelte';
+	import MapPicker from './MapPicker.svelte';
 	import { SCALE_ICONS } from './icons';
 	import {
 		SCALE_INFO,
@@ -212,6 +213,7 @@
 				{#if err('lon')}<span class="err" id="{id}-lon-err">{err('lon')}</span>{/if}
 			</div>
 		</div>
+		<MapPicker bind:lat bind:lon />
 	</details>
 
 	<fieldset class="field" aria-describedby={described('source_urls', true)}>

src/lib/worldtodo/WorldMap.svelte

@@ -0,0 +1,760 @@
+<script lang="ts">
+	import 'leaflet/dist/leaflet.css';
+	import type * as Leaflet from 'leaflet';
+	import { mount, unmount, untrack, type Component } from 'svelte';
+	import { categoryIcon } from './icons';
+	import { clusterPoints, coordKey, ringOffsets } from './cluster';
+	import { addThemedTiles, loadLeaflet } from './tiles';
+	import {
+		SCALE_INFO,
+		STATUS_LABELS,
+		WORLDTODO_SCALES,
+		type Category,
+		type PublicTask,
+		type Scale
+	} from './shared';
+
+	// The task map (List / Map toggle, tracker #4641): one pin per task with coordinates,
+	// coloured by category and sized by scale; clusters with counts when zoomed out; tasks on
+	// the same centroid fan out in a ring from zoom 6. Planet tasks never get a pin (the page
+	// shows them in the Global strip). Pins are focusable buttons; the list stays the full
+	// alternative to the map.
+	let {
+		tasks,
+		categories,
+		highlight = null,
+		fitKey = ''
+	}: {
+		tasks: PublicTask[];
+		categories: Category[];
+		/** Slug whose pin (or cluster) is emphasised, e.g. while hovering its list card. */
+		highlight?: string | null;
+		/** Refit the view when this changes (filters), not on live updates. */
+		fitKey?: string;
+	} = $props();
+
+	const BASE = '/projects/worldwide-todo';
+	const PIN: Record<Scale, number> = { street: 16, city: 20, country: 26, region: 32, planet: 36 };
+	const FOCUS_ZOOM: Record<Scale, number> = {
+		street: 16,
+		city: 12,
+		country: 6,
+		region: 5,
+		planet: 3
+	};
+	const SPREAD_FROM = 6;
+	const UNCLUSTER_FROM = 10;
+
+	let el: HTMLDivElement;
+	let L: typeof Leaflet | null = null;
+	let map: Leaflet.Map | null = null;
+	let layer: Leaflet.LayerGroup | null = null;
+	let ready = $state(false);
+	let failed = $state(false);
+	let scrollOn = $state(false);
+	// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+	const pins = new Map<string, Leaflet.Marker>();
+	/** slug → the element showing it (its own pin or the cluster that holds it). */
+	// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+	const shownBy = new Map<string, HTMLElement>();
+	// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+	const clusterOf = new Map<string, { at: Leaflet.LatLng; members: PublicTask[] }>();
+
+	const located = $derived(
+		tasks.filter((t) => t.locationPrecision !== 'none' && t.lat !== null && t.lon !== null)
+	);
+	const catBySlug = $derived(new Map(categories.map((c) => [c.slug, c])));
+	const usedCats = $derived(categories.filter((c) => located.some((t) => t.category === c.slug)));
+
+	const esc = (s: string) =>
+		s.replace(
+			/[&<>"']/g,
+			(ch) => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' })[ch]!
+		);
+	const colourOf = (t: PublicTask) => {
+		const c = catBySlug.get(t.category)?.colour ?? '';
+		return /^#[0-9a-f]{3,8}$/i.test(c) ? c : '#737373';
+	};
+	const label = (t: PublicTask) =>
+		`${t.title}, ${SCALE_INFO[t.scale].label.toLowerCase()}, ${STATUS_LABELS[t.status].toLowerCase()}`;
+
+	// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+	const svgCache = new Map<string, string>();
+	function iconSvg(key: string | undefined) {
+		const k = key ?? '';
+		let svg = svgCache.get(k);
+		if (svg === undefined) {
+			const host = document.createElement('div');
+			const c = mount(categoryIcon(key) as unknown as Component<Record<string, unknown>>, {
+				target: host,
+				props: { size: 14, strokeWidth: 2.5, 'aria-hidden': 'true' }
+			});
+			svg = host.innerHTML.replace(/<!--[^>]*-->/g, '');
+			unmount(c);
+			svgCache.set(k, svg);
+		}
+		return svg;
+	}
+	const CHECK =
+		'<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M20 6 9 17l-5-5"/></svg>';
+
+	function pinHtml(t: PublicTask) {
+		const inner =
+			t.status === 'done'
+				? CHECK
+				: PIN[t.scale] >= 20
+					? iconSvg(catBySlug.get(t.category)?.icon)
+					: '';
+		return `<span class="wt-pin ${t.status} ${t.locationPrecision}" style="--c:${colourOf(t)};--s:${PIN[t.scale]}px">${inner}</span>`;
+	}
+
+	function popupHtml(t: PublicTask) {
+		const cat = catBySlug.get(t.category);
+		const href = `${BASE}/${encodeURIComponent(t.slug)}`;
+		const change = `${BASE}/request?kind=edit&task=${encodeURIComponent(t.slug)}`;
+		return `<div class="wt-pop">
+			<div class="wt-chips">
+				<span class="wt-chip">${esc(SCALE_INFO[t.scale].label)}</span>
+				<span class="wt-chip"><i style="background:${colourOf(t)}"></i>${esc(cat?.label ?? t.category)}</span>
+				<span class="wt-status ${t.status}">${esc(STATUS_LABELS[t.status])}</span>
+			</div>
+			<a class="wt-title" href="${href}">${esc(t.title)}</a>
+			<p class="wt-where">${esc(t.locationName)}${t.locationPrecision === 'approximate' ? ' · <em>approximate location</em>' : ''}</p>
+			<p class="wt-desc">${esc(t.description)}</p>
+			<div class="wt-actions">
+				<a class="wt-btn primary" href="${href}">View task</a>
+				<a class="wt-btn" href="${change}">Request change</a>
+			</div>
+		</div>`;
+	}
+
+	function clusterPopupHtml(members: PublicTask[]) {
+		const items = members
+			.map(
+				(t) =>
+					`<li><i style="background:${colourOf(t)}"></i><a href="${BASE}/${encodeURIComponent(t.slug)}">${esc(t.title)}</a><span class="wt-status ${t.status}">${esc(STATUS_LABELS[t.status])}</span></li>`
+			)
+			.join('');
+		return `<div class="wt-pop"><p class="wt-where">${members.length} tasks here</p><ul class="wt-list">${items}</ul></div>`;
+	}
+
+	const popupOptions = () => ({
+		className: 'wt-popup',
+		maxWidth: Math.min(300, (el?.clientWidth ?? 320) - 48),
+		minWidth: Math.min(220, (el?.clientWidth ?? 320) - 64),
+		autoPanPadding: [16, 16] as [number, number]
+	});
+
+	function render() {
+		if (!map || !L || !layer) return;
+		const Lf = L;
+		const m = map;
+		layer.clearLayers();
+		pins.clear();
+		shownBy.clear();
+		clusterOf.clear();
+		const z = m.getZoom();
+
+		type P = { t: PublicTask; x: number; y: number; weight: number; at: Leaflet.LatLng };
+		const all: P[] = located.map((t) => {
+			const at = Lf.latLng(t.lat!, t.lon!);
+			const p = m.project(at, z);
+			return { t, x: p.x, y: p.y, weight: PIN[t.scale], at };
+		});
+		// From SPREAD_FROM, tasks sharing one coordinate (country centroids) fan out in a ring
+		// and never cluster; from UNCLUSTER_FROM nothing clusters.
+		const fanned: P[][] = [];
+		let rest = all;
+		if (z >= SPREAD_FROM) {
+			// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+			const byCoord = new Map<string, P[]>();
+			for (const p of all) {
+				const k = coordKey(p.t.lat!, p.t.lon!);
+				byCoord.set(k, [...(byCoord.get(k) ?? []), p]);
+			}
+			for (const g of byCoord.values()) if (g.length > 1) fanned.push(g);
+			rest = all.filter((p) => !fanned.some((g) => g.includes(p)));
+		}
+		const groups: P[][] = [
+			...clusterPoints(rest, z >= UNCLUSTER_FROM ? 0 : z >= SPREAD_FROM ? 36 : 40),
+			...fanned.flatMap((g) => {
+				const ring = ringOffsets(g.length);
+				return g.map((p, i) => [
+					{ ...p, at: m.unproject([p.x + ring[i].dx, p.y + ring[i].dy], z) }
+				]);
+			})
+		];
+
+		for (const g of groups) {
+			if (g.length === 1) {
+				const { t, at } = g[0];
+				const s = PIN[t.scale];
+				const marker = Lf.marker(at, {
+					icon: Lf.divIcon({
+						className: 'wt-pin-wrap',
+						html: pinHtml(t),
+						iconSize: [s, s],
+						iconAnchor: [s / 2, s / 2],
+						popupAnchor: [0, -s / 2]
+					}),
+					keyboard: true,
+					riseOnHover: true,
+					zIndexOffset: s * 10
+				});
+				marker.bindPopup(popupHtml(t), popupOptions());
+				marker.on('add', () => {
+					const e = marker.getElement();
+					if (!e) return;
+					e.setAttribute('role', 'button');
+					e.setAttribute('aria-label', label(t));
+					e.removeAttribute('title');
+					shownBy.set(t.slug, e);
+					if (t.slug === highlight) e.classList.add('wt-hl');
+				});
+				pins.set(t.slug, marker);
+				layer.addLayer(marker);
+				continue;
+			}
+			const members = g.map((p) => p.t);
+			const bounds = Lf.latLngBounds(g.map((p) => p.at));
+			const center = bounds.getCenter();
+			const colours = [...new Set(members.map(colourOf))].slice(0, 8);
+			const step = 100 / colours.length;
+			const ring = colours.map((c, i) => `${c} ${i * step}% ${(i + 1) * step}%`).join(', ');
+			const size = Math.min(52, 30 + members.length * 2);
+			const marker = Lf.marker(center, {
+				icon: Lf.divIcon({
+					className: 'wt-pin-wrap',
+					html: `<span class="wt-cluster" style="--s:${size}px;background:conic-gradient(${ring})"><span>${members.length}</span></span>`,
+					iconSize: [size, size],
+					iconAnchor: [size / 2, size / 2]
+				}),
+				keyboard: true,
+				zIndexOffset: 1000
+			});
+			const entry = { at: center, members };
+			marker.on('click', () => {
+				const sameSpot = bounds.getNorthEast().distanceTo(bounds.getSouthWest()) < 200;
+				if (sameSpot || m.getZoom() >= UNCLUSTER_FROM)
+					Lf.popup(popupOptions())
+						.setLatLng(center)
+						.setContent(clusterPopupHtml(members))
+						.openOn(m);
+				else m.flyToBounds(bounds, { padding: [56, 56], maxZoom: UNCLUSTER_FROM, duration: 0.6 });
+			});
+			marker.on('add', () => {
+				const e = marker.getElement();
+				if (!e) return;
+				e.setAttribute('role', 'button');
+				e.setAttribute('aria-label', `${members.length} tasks here, zoom in`);
+				e.removeAttribute('title');
+				for (const t of members) shownBy.set(t.slug, e);
+				if (highlight && members.some((t) => t.slug === highlight)) e.classList.add('wt-hl');
+			});
+			for (const t of members) clusterOf.set(t.slug, entry);
+			layer.addLayer(marker);
+		}
+	}
+
+	function fit() {
+		if (!map || !L) return;
+		const pts = located.map((t) => [t.lat!, t.lon!] as [number, number]);
+		if (!pts.length) map.setView([25, 10], 2);
+		else if (pts.length === 1) map.setView(pts[0], FOCUS_ZOOM[located[0].scale]);
+		else map.fitBounds(L.latLngBounds(pts), { padding: [36, 36], maxZoom: 12 });
+	}
+
+	/** Fly to a task's pin and open its popup (list card click in map view). */
+	export function focusTask(slug: string) {
+		const t = located.find((x) => x.slug === slug);
+		if (!t || !map) return;
+		const m = map;
+		const r = el.getBoundingClientRect();
+		if (r.top < 0 || r.bottom > window.innerHeight)
+			el.scrollIntoView({
+				behavior: matchMedia('(prefers-reduced-motion: reduce)').matches ? 'auto' : 'smooth',
+				block: 'center'
+			});
+		const zoom = Math.max(m.getZoom(), FOCUS_ZOOM[t.scale]);
+		m.once('moveend', () => {
+			render();
+			const pin = pins.get(slug);
+			if (pin) pin.openPopup();
+			else {
+				const c = clusterOf.get(slug);
+				if (c && L)
+					L.popup(popupOptions()).setLatLng(c.at).setContent(clusterPopupHtml(c.members)).openOn(m);
+			}
+		});
+		m.flyTo([t.lat!, t.lon!], zoom, { duration: 0.8 });
+	}
+
+	$effect(() => {
+		let disposed = false;
+		let stopTiles = () => {};
+		loadLeaflet()
+			.then((Lf) => {
+				if (disposed) return;
+				L = Lf;
+				const m = Lf.map(el, {
+					worldCopyJump: true,
+					scrollWheelZoom: false,
+					minZoom: 1,
+					maxZoom: 18,
+					zoomSnap: 0.5
+				});
+				map = m;
+				stopTiles = addThemedTiles(Lf, m);
+				layer = Lf.layerGroup().addTo(m);
+				// Scroll zoom only after the map is clicked or focused, so the page keeps scrolling.
+				const on = () => {
+					m.scrollWheelZoom.enable();
+					scrollOn = true;
+				};
+				const off = () => {
+					m.scrollWheelZoom.disable();
+					scrollOn = false;
+				};
+				m.on('click focus', on);
+				m.on('blur', off);
+				el.addEventListener('mouseleave', off);
+				m.on('zoomend', render);
+				untrack(fit);
+				render();
+				ready = true;
+			})
+			.catch(() => (failed = true));
+		return () => {
+			disposed = true;
+			stopTiles();
+			map?.remove();
+			map = null;
+			layer = null;
+		};
+	});
+
+	// Live updates and filter changes re-render the pins; only filter changes refit the view.
+	$effect(() => {
+		void located;
+		void catBySlug;
+		if (ready) untrack(render);
+	});
+	let lastFit = untrack(() => fitKey);
+	$effect(() => {
+		const k = fitKey;
+		if (!ready || k === lastFit) return;
+		lastFit = k;
+		untrack(fit);
+	});
+	$effect(() => {
+		const h = highlight;
+		if (!ready) return;
+		untrack(() => {
+			for (const e of el.querySelectorAll('.wt-hl')) e.classList.remove('wt-hl');
+			if (h) shownBy.get(h)?.classList.add('wt-hl');
+		});
+	});
+</script>
+
+<div class="wt-map-wrap">
+	<div
+		class="wt-map"
+		bind:this={el}
+		role="region"
+		aria-label="Map of tasks. Each pin is a button; the list below has every task too."
+	></div>
+	{#if failed}
+		<p class="overlay">The map could not load. The list below has every task.</p>
+	{:else if ready && !scrollOn}
+		<span class="hint" aria-hidden="true">Click the map to zoom with scroll</span>
+	{/if}
+	<details class="legend">
+		<summary>Legend</summary>
+		<div class="legend-body">
+			<ul aria-label="Categories">
+				{#each usedCats as c (c.slug)}
+					<li><i class="dot" style="background:{c.colour}"></i>{c.label}</li>
+				{/each}
+			</ul>
+			<ul aria-label="Scales" class="scales">
+				{#each WORLDTODO_SCALES.filter((s) => s !== 'planet') as s (s)}
+					<li>
+						<i class="dot size" style="--s:{PIN[s]}px"></i>{SCALE_INFO[s].label}
+					</li>
+				{/each}
+			</ul>
+			<ul aria-label="Pin styles">
+				<li><i class="dot ring"></i>In progress</li>
+				<li><i class="dot done"></i>Done</li>
+				<li><i class="dot approx"></i>Approximate (region, country)</li>
+			</ul>
+		</div>
+	</details>
+</div>
+
+<style>
+	/* Keyless fallback (OSM tiles) darkened to sit in the dark theme. */
+	:global(.wt-tiles-dim) {
+		filter: invert(1) hue-rotate(180deg) brightness(0.85) contrast(0.9) saturate(0.6);
+	}
+	.wt-map-wrap {
+		position: relative;
+		border: 1px solid var(--site-border);
+		border-radius: 0.85rem;
+		overflow: hidden;
+		background: var(--site-surface);
+	}
+	.wt-map {
+		height: min(70vh, 720px);
+		min-height: 320px;
+		background: #0e0e0e;
+		z-index: 0;
+	}
+	:global(html:not(.dark)) .wt-map {
+		background: #e9e9e9;
+	}
+	.hint,
+	.overlay {
+		position: absolute;
+		top: 0.6rem;
+		right: 0.6rem;
+		z-index: 500;
+		padding: 0.2rem 0.6rem;
+		border-radius: 999px;
+		font-size: 0.72rem;
+		color: var(--site-muted);
+		background: color-mix(in srgb, var(--site-bg) 85%, transparent);
+		border: 1px solid var(--site-border);
+		pointer-events: none;
+	}
+	.overlay {
+		inset: 40% 1rem auto;
+		text-align: center;
+	}
+	.legend {
+		position: absolute;
+		left: 0.6rem;
+		bottom: 1.6rem;
+		z-index: 500;
+		max-width: calc(100% - 1.2rem);
+		padding: 0.35rem 0.7rem;
+		border: 1px solid var(--site-border);
+		border-radius: 0.7rem;
+		background: color-mix(in srgb, var(--site-bg) 90%, transparent);
+		backdrop-filter: blur(6px);
+		font-size: 0.75rem;
+		color: var(--site-text);
+	}
+	.legend summary {
+		cursor: pointer;
+		font-weight: 600;
+	}
+	.legend-body {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.4rem 1.2rem;
+		padding: 0.4rem 0 0.15rem;
+		max-height: 40vh;
+		overflow: auto;
+	}
+	.legend ul {
+		display: grid;
+		gap: 0.2rem;
+		align-content: start;
+	}
+	.legend li {
+		display: flex;
+		align-items: center;
+		gap: 0.4rem;
+		color: var(--site-muted);
+		white-space: nowrap;
+	}
+	.dot {
+		display: inline-block;
+		width: 0.7rem;
+		height: 0.7rem;
+		border-radius: 999px;
+		border: 1.5px solid #fff;
+		flex: none;
+	}
+	.dot.size {
+		width: calc(var(--s) * 0.6);
+		height: calc(var(--s) * 0.6);
+		background: var(--site-muted);
+	}
+	.dot.ring {
+		background: #737373;
+		box-shadow: 0 0 0 2px #facc15;
+	}
+	.dot.done {
+		background: #525252;
+		border-color: #a3a3a3;
+	}
+	.dot.approx {
+		background: #737373;
+		outline: 1.5px dashed #a3a3a3;
+		outline-offset: 2px;
+	}
+
+	/* Leaflet-made DOM (pins, clusters, popups) lives inside .wt-map. */
+	.wt-map :global(.wt-pin-wrap) {
+		background: none;
+		border: 0;
+		border-radius: 999px;
+	}
+	.wt-map :global(.wt-pin-wrap:focus-visible) {
+		outline: 2px solid #fff;
+		outline-offset: 3px;
+	}
+	.wt-map :global(.wt-pin) {
+		position: relative;
+		box-sizing: border-box;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		width: var(--s);
+		height: var(--s);
+		border-radius: 999px;
+		background: var(--c);
+		border: 2px solid #fff;
+		color: #fff;
+		box-shadow: 0 2px 8px rgb(0 0 0 / 0.55);
+		cursor: pointer;
+		transition: transform 0.15s;
+	}
+	.wt-map :global(.wt-pin svg) {
+		width: 62%;
+		height: 62%;
+	}
+	.wt-map :global(.wt-pin.approximate) {
+		outline: 2px dashed color-mix(in srgb, var(--c) 60%, #fff);
+		outline-offset: 3px;
+	}
+	.wt-map :global(.wt-pin.done) {
+		background: #4b4b4b;
+		border-color: #a3a3a3;
+		color: #e5e5e5;
+		opacity: 0.85;
+	}
+	.wt-map :global(.wt-pin.in_progress::after) {
+		content: '';
+		position: absolute;
+		inset: -5px;
+		border-radius: 999px;
+		border: 2px solid var(--c);
+		animation: wt-pulse 1.8s ease-out infinite;
+		pointer-events: none;
+	}
+	@keyframes -global-wt-pulse {
+		from {
+			transform: scale(0.85);
+			opacity: 0.95;
+		}
+		to {
+			transform: scale(1.7);
+			opacity: 0;
+		}
+	}
+	.wt-map :global(.wt-pin-wrap:hover .wt-pin),
+	.wt-map :global(.wt-pin-wrap:focus-visible .wt-pin),
+	.wt-map :global(.wt-hl .wt-pin),
+	.wt-map :global(.wt-pin-wrap:hover .wt-cluster),
+	.wt-map :global(.wt-hl .wt-cluster) {
+		transform: scale(1.35);
+	}
+	.wt-map :global(.wt-pin-wrap.wt-hl) {
+		z-index: 10000 !important;
+	}
+	.wt-map :global(.wt-hl .wt-pin) {
+		box-shadow:
+			0 0 0 3px #fff,
+			0 2px 12px rgb(0 0 0 / 0.6);
+	}
+	.wt-map :global(.wt-cluster) {
+		box-sizing: border-box;
+		display: flex;
+		width: var(--s);
+		height: var(--s);
+		padding: 3px;
+		border-radius: 999px;
+		box-shadow: 0 2px 10px rgb(0 0 0 / 0.55);
+		cursor: pointer;
+		transition: transform 0.15s;
+	}
+	.wt-map :global(.wt-cluster span) {
+		display: flex;
+		flex: 1;
+		align-items: center;
+		justify-content: center;
+		border-radius: 999px;
+		background: #0a0a0a;
+		color: #fff;
+		font-size: 0.78rem;
+		font-weight: 650;
+		font-variant-numeric: tabular-nums;
+	}
+
+	.wt-map :global(.leaflet-control-attribution) {
+		background: color-mix(in srgb, var(--site-bg) 80%, transparent);
+		color: var(--site-muted);
+		font-size: 0.65rem;
+	}
+	.wt-map :global(.leaflet-control-attribution a) {
+		color: var(--site-text);
+	}
+	.wt-map :global(.leaflet-control-zoom) {
+		border: 1px solid var(--site-border);
+		border-radius: 0.6rem;
+		overflow: hidden;
+	}
+	.wt-map :global(.leaflet-control-zoom a) {
+		background: var(--site-bg);
+		color: var(--site-text);
+		border-color: var(--site-border);
+	}
+	.wt-map :global(.wt-popup .leaflet-popup-content-wrapper),
+	.wt-map :global(.wt-popup .leaflet-popup-tip) {
+		background: var(--site-surface);
+		color: var(--site-text);
+		border: 1px solid var(--site-border);
+		box-shadow: 0 12px 32px -12px rgb(0 0 0 / 0.7);
+	}
+	.wt-map :global(.wt-popup .leaflet-popup-content-wrapper) {
+		border-radius: 0.85rem;
+	}
+	.wt-map :global(.wt-popup .leaflet-popup-content) {
+		margin: 0.8rem 0.9rem;
+		font: inherit;
+	}
+	.wt-map :global(.wt-popup a.leaflet-popup-close-button) {
+		color: var(--site-muted);
+	}
+	.wt-map :global(.wt-pop) {
+		display: grid;
+		gap: 0.4rem;
+		font-size: 0.8rem;
+	}
+	.wt-map :global(.wt-chips) {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.3rem;
+		padding-right: 1rem;
+	}
+	.wt-map :global(.wt-chip),
+	.wt-map :global(.wt-status) {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.3rem;
+		padding: 0.05rem 0.45rem;
+		border: 1px solid var(--site-border);
+		border-radius: 999px;
+		font-size: 0.7rem;
+		color: var(--site-muted);
+		white-space: nowrap;
+	}
+	.wt-map :global(.wt-chip i),
+	.wt-map :global(.wt-list i) {
+		width: 0.55rem;
+		height: 0.55rem;
+		border-radius: 999px;
+		flex: none;
+	}
+	.wt-map :global(.wt-status) {
+		color: var(--site-text);
+	}
+	.wt-map :global(.wt-status.done) {
+		background: var(--site-text);
+		color: var(--site-bg);
+	}
+	.wt-map :global(.wt-title) {
+		color: var(--site-text);
+		font-size: 0.92rem;
+		font-weight: 600;
+		line-height: 1.3;
+		text-decoration: none;
+	}
+	.wt-map :global(.wt-title:hover) {
+		text-decoration: underline;
+	}
+	.wt-map :global(.wt-pop p) {
+		margin: 0;
+	}
+	.wt-map :global(.wt-where) {
+		color: var(--site-muted);
+		font-size: 0.75rem;
+	}
+	.wt-map :global(.wt-desc) {
+		display: -webkit-box;
+		-webkit-line-clamp: 2;
+		line-clamp: 2;
+		-webkit-box-orient: vertical;
+		overflow: hidden;
+		color: var(--site-text);
+		line-height: 1.4;
+	}
+	.wt-map :global(.wt-actions) {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.35rem;
+		padding-top: 0.15rem;
+	}
+	.wt-map :global(.wt-btn) {
+		padding: 0.3rem 0.7rem;
+		border: 1px solid var(--site-border);
+		border-radius: 999px;
+		color: var(--site-text);
+		font-size: 0.75rem;
+		font-weight: 550;
+		text-decoration: none;
+	}
+	.wt-map :global(.wt-btn:hover),
+	.wt-map :global(.wt-btn:focus-visible) {
+		border-color: var(--site-text);
+	}
+	.wt-map :global(.wt-btn.primary) {
+		background: var(--site-text);
+		color: var(--site-bg);
+		border-color: var(--site-text);
+	}
+	.wt-map :global(.wt-list) {
+		display: grid;
+		gap: 0.35rem;
+		max-height: 14rem;
+		overflow: auto;
+		margin: 0;
+		padding: 0;
+		list-style: none;
+	}
+	.wt-map :global(.wt-list li) {
+		display: flex;
+		align-items: center;
+		gap: 0.4rem;
+	}
+	.wt-map :global(.wt-list a) {
+		flex: 1;
+		color: var(--site-text);
+		text-decoration: none;
+		line-height: 1.3;
+	}
+	.wt-map :global(.wt-list a:hover) {
+		text-decoration: underline;
+	}
+	@media (max-width: 640px) {
+		.wt-map {
+			height: 60vh;
+		}
+		.hint {
+			display: none;
+		}
+	}
+	@media (prefers-reduced-motion: reduce) {
+		.wt-map :global(.wt-pin.in_progress::after) {
+			animation: none;
+			transform: scale(1.25);
+		}
+		.wt-map :global(.wt-pin),
+		.wt-map :global(.wt-cluster) {
+			transition: none;
+		}
+	}
+</style>

src/lib/worldtodo/cluster.test.ts

@@ -0,0 +1,40 @@
+import { describe, expect, it } from 'vitest';
+import { clusterPoints, coordKey, ringOffsets } from './cluster';
+
+const pt = (x: number, y: number, weight = 1) => ({ x, y, weight });
+
+describe('clusterPoints', () => {
+	it('groups points within the radius and keeps far ones apart', () => {
+		const a = pt(0, 0);
+		const b = pt(10, 10);
+		const c = pt(200, 0);
+		const groups = clusterPoints([a, b, c], 40);
+		expect(groups).toHaveLength(2);
+		expect(groups.find((g) => g.includes(a))).toContain(b);
+		expect(groups.find((g) => g.includes(c))).toEqual([c]);
+	});
+	it('lets the heaviest point anchor the cluster', () => {
+		const small = pt(0, 0, 1);
+		const big = pt(30, 0, 5);
+		const far = pt(65, 0, 1);
+		const groups = clusterPoints([small, big, far], 40);
+		expect(groups[0][0]).toBe(big);
+		expect(groups[0]).toHaveLength(3);
+	});
+	it('radius 0 keeps every point alone', () => {
+		expect(clusterPoints([pt(0, 0), pt(0, 0)], 0)).toHaveLength(2);
+	});
+});
+
+describe('ringOffsets', () => {
+	it('is a no-op for one pin and spreads several pins apart', () => {
+		expect(ringOffsets(1)).toEqual([{ dx: 0, dy: 0 }]);
+		const ring = ringOffsets(4);
+		expect(ring).toHaveLength(4);
+		const keys = new Set(ring.map((o) => `${o.dx},${o.dy}`));
+		expect(keys.size).toBe(4);
+	});
+	it('rounds coordinates for grouping', () => {
+		expect(coordKey(52.2, 5.3)).toBe(coordKey(52.20001, 5.30002));
+	});
+});

src/lib/worldtodo/cluster.ts

@@ -0,0 +1,45 @@
+// Tiny screen-space clustering for the task map (a few hundred pins at most, so O(n²) is fine
+// and avoids a plugin). Points are in projected pixels at the current zoom.
+
+export type ScreenPoint = { x: number; y: number; weight: number };
+
+/**
+ * Greedy clustering: the heaviest unassigned point (largest scale) takes every unassigned
+ * point within `radius` px. Returns groups in that order; radius 0 keeps every point alone.
+ */
+export function clusterPoints<T extends ScreenPoint>(points: T[], radius: number): T[][] {
+	const order = [...points].sort((a, b) => b.weight - a.weight);
+	const used = new Set<T>();
+	const groups: T[][] = [];
+	const r2 = radius * radius;
+	for (const p of order) {
+		if (used.has(p)) continue;
+		used.add(p);
+		const group = [p];
+		if (radius > 0)
+			for (const q of order) {
+				if (used.has(q)) continue;
+				const dx = q.x - p.x;
+				const dy = q.y - p.y;
+				if (dx * dx + dy * dy <= r2) {
+					used.add(q);
+					group.push(q);
+				}
+			}
+		groups.push(group);
+	}
+	return groups;
+}
+
+/** Offsets (px) that fan out `n` pins sharing one coordinate in a small ring. */
+export function ringOffsets(n: number): { dx: number; dy: number }[] {
+	if (n <= 1) return [{ dx: 0, dy: 0 }];
+	const r = 16 + n * 3;
+	return Array.from({ length: n }, (_, i) => {
+		const a = (2 * Math.PI * i) / n - Math.PI / 2;
+		return { dx: Math.round(Math.cos(a) * r), dy: Math.round(Math.sin(a) * r) };
+	});
+}
+
+/** Rounded lat/lon key, so tasks on the same centroid can be fanned out. */
+export const coordKey = (lat: number, lon: number) => `${lat.toFixed(4)},${lon.toFixed(4)}`;

src/lib/worldtodo/shared.ts

@@ -8,6 +8,19 @@ export const WORLDTODO_REQUEST_KINDS = ['add', 'edit', 'delete'] as const;
 export type RequestKind = (typeof WORLDTODO_REQUEST_KINDS)[number];
 export const WORLDTODO_REQUEST_STATUSES = ['pending', 'approved', 'rejected'] as const;
 export type RequestStatus = (typeof WORLDTODO_REQUEST_STATUSES)[number];
+export const WORLDTODO_LOCATION_PRECISIONS = ['exact', 'approximate', 'none'] as const;
+export type LocationPrecision = (typeof WORLDTODO_LOCATION_PRECISIONS)[number];
+
+/** Same rule as the tasks_location_precision trigger: what kind of pin a task gets. */
+export function precisionFor(
+	scale: Scale,
+	lat: number | null | undefined,
+	lon: number | null | undefined
+): LocationPrecision {
+	if (lat === null || lat === undefined || lon === null || lon === undefined) return 'none';
+	if (scale === 'planet') return 'none';
+	return scale === 'street' || scale === 'city' ? 'exact' : 'approximate';
+}
 
 /** The only keys a request payload may carry (checked server-side). */
 export const EDITABLE_FIELDS = [
@@ -66,6 +79,8 @@ export type PublicTask = {
 	countryCode: string | null;
 	lat: number | null;
 	lon: number | null;
+	/** Map pin kind (see precisionFor). */
+	locationPrecision: LocationPrecision;
 	status: Status;
 	sourceUrls: string[];
 	sourceDate: string | null;

src/lib/worldtodo/tiles.ts

@@ -0,0 +1,54 @@
+import type * as Leaflet from 'leaflet';
+import { PUBLIC_MAPTILER_API_KEY } from '$app/env/public';
+
+// MapTiler "Dataviz" basemaps on OpenStreetMap data (the site's existing public MapTiler
+// key): dark in the dark theme, light in the light one, swapped live when the theme
+// toggles. Without a key (local dev) it falls back to the standard OSM tiles, darkened
+// with a CSS filter in the dark theme. CARTO's raster tiles need a key since Sept 2026.
+
+const isDark = () => document.documentElement.classList.contains('dark');
+
+const OSM =
+	'&copy; <a href="https://www.openstreetmap.org/copyright" target="_blank" rel="noopener">OpenStreetMap</a> contributors';
+const MAPTILER =
+	'&copy; <a href="https://www.maptiler.com/copyright/" target="_blank" rel="noopener">MapTiler</a>';
+
+function source(dark: boolean): { url: string; attribution: string; filtered: boolean } {
+	if (PUBLIC_MAPTILER_API_KEY) {
+		const style = dark ? 'dataviz-dark' : 'dataviz';
+		return {
+			url: `https://api.maptiler.com/maps/${style}/256/{z}/{x}/{y}{r}.png?key=${encodeURIComponent(PUBLIC_MAPTILER_API_KEY)}`,
+			attribution: `${MAPTILER} ${OSM}`,
+			filtered: false
+		};
+	}
+	return {
+		url: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
+		attribution: OSM,
+		filtered: dark
+	};
+}
+
+/** Adds the themed tile layer to `map`; returns a cleanup for the theme observer. */
+export function addThemedTiles(L: typeof Leaflet, map: Leaflet.Map): () => void {
+	const first = source(isDark());
+	const layer = L.tileLayer(first.url, {
+		maxZoom: 19,
+		attribution: first.attribution,
+		className: first.filtered ? 'wt-tiles-dim' : ''
+	}).addTo(map);
+	const apply = () => {
+		const s = source(isDark());
+		layer.getContainer()?.classList.toggle('wt-tiles-dim', s.filtered);
+		layer.setUrl(s.url);
+	};
+	const observer = new MutationObserver(apply);
+	observer.observe(document.documentElement, { attributes: true, attributeFilter: ['class'] });
+	return () => observer.disconnect();
+}
+
+/** Leaflet is browser-only: load it on demand (never during SSR). */
+export async function loadLeaflet(): Promise<typeof Leaflet> {
+	const mod = await import('leaflet');
+	return (mod.default ?? mod) as typeof Leaflet;
+}

src/routes/projects/cs-prices/+page.server.ts

@@ -1,26 +1,24 @@
 import { db } from '#lib/server/db/index.js';
 import { sql } from 'drizzle-orm';
+import { kinds, overview, searchSkins, streams } from '#lib/server/cs-prices.js';
 import type { PageServerLoad } from './$types';
 
-export const load: PageServerLoad = async () => {
-	const [stats, dimensions, markets] = await Promise.all([
-		db.execute(sql`SELECT
-			(SELECT count(*)::int FROM cs.items) AS items,
-			(SELECT greatest(reltuples::bigint, 0) FROM pg_class WHERE oid = 'cs.price_observations'::regclass) AS observations,
-			(SELECT min(observed_at) FROM cs.price_observations) AS earliest,
-			(SELECT max(observed_at) FROM cs.price_observations) AS latest`),
+export const load: PageServerLoad = async ({ url }) => {
+	const q = url.searchParams.get('q') ?? '';
+	const kind = url.searchParams.get('kind') ?? '';
+	const sort = url.searchParams.get('sort') ?? 'popular';
+	const [stats, dimensions, markets, skins] = await Promise.all([
+		overview(),
 		db.execute(sql`SELECT key, count(DISTINCT value)::int AS values
 			FROM cs.item_dimensions GROUP BY key ORDER BY key`),
-		db.execute(sql`SELECT source, currency, kind FROM cs.price_streams ORDER BY 1, 2, 3`)
+		streams(),
+		searchSkins(q, kind, sort)
 	]);
 	return {
-		stats: stats[0] as {
-			items: number;
-			observations: string;
-			earliest: Date | null;
-			latest: Date | null;
-		},
+		stats,
 		dimensions: dimensions as unknown as { key: string; values: number }[],
-		markets: markets as unknown as { source: string; currency: string; kind: string }[]
+		markets,
+		kinds: kinds.map(([value, label]) => ({ value, label })),
+		browse: { q, kind, sort, skins }
 	};
 };

src/routes/projects/cs-prices/+page.svelte

@@ -9,6 +9,70 @@
 	import type { PageProps } from './$types';
 
 	let { data }: PageProps = $props();
+
+	// Browse: every skin, sticker, case, agent, … with its cheapest Skinport listing today.
+	const euro = new Intl.NumberFormat('nl-NL', { style: 'currency', currency: 'EUR' });
+	type Hit = (typeof data.browse.skins)[number];
+	// svelte-ignore state_referenced_locally
+	let browseQuery = $state(data.browse.q);
+	// svelte-ignore state_referenced_locally
+	let browseKind = $state(data.browse.kind);
+	// svelte-ignore state_referenced_locally
+	let browseSort = $state(data.browse.sort);
+	// svelte-ignore state_referenced_locally
+	let hits = $state<Hit[]>(data.browse.skins);
+	let browsing = $state(false);
+	let moreLeft = $state(true);
+	let firstBrowse = true;
+	async function fetchHits(offset: number, signal?: AbortSignal) {
+		// eslint-disable-next-line svelte/prefer-svelte-reactivity -- local, non-reactive query builder
+		const params = new URLSearchParams({ q: browseQuery, kind: browseKind, sort: browseSort });
+		params.set('offset', String(offset));
+		const response = await fetch(`/projects/cs-prices/api/skins?${params}`, { signal });
+		if (!response.ok) throw new Error(`Search failed (${response.status})`);
+		return (await response.json()).skins as Hit[];
+	}
+	$effect(() => {
+		void browseQuery;
+		void browseKind;
+		void browseSort;
+		if (firstBrowse) {
+			firstBrowse = false;
+			return;
+		}
+		const controller = new AbortController();
+		const timer = setTimeout(async () => {
+			browsing = true;
+			try {
+				hits = await fetchHits(0, controller.signal);
+				moreLeft = hits.length >= 60;
+				// eslint-disable-next-line svelte/prefer-svelte-reactivity -- local, non-reactive query builder
+				const params = new URLSearchParams();
+				if (browseQuery) params.set('q', browseQuery);
+				if (browseKind) params.set('kind', browseKind);
+				if (browseSort !== 'popular') params.set('sort', browseSort);
+				history.replaceState(history.state, '', params.size ? `?${params}` : location.pathname);
+			} catch {
+				/* aborted or failed; keep the last results */
+			} finally {
+				if (!controller.signal.aborted) browsing = false;
+			}
+		}, 200);
+		return () => {
+			clearTimeout(timer);
+			controller.abort();
+		};
+	});
+	async function loadMore() {
+		browsing = true;
+		try {
+			const next = await fetchHits(hits.length);
+			hits = [...hits, ...next];
+			moreLeft = next.length >= 60;
+		} finally {
+			browsing = false;
+		}
+	}
 	type Result = {
 		id?: number;
 		name?: string;
@@ -40,15 +104,12 @@
 	};
 	const number = new Intl.NumberFormat('en-US');
 	let dimension = $state('item');
-	let sourceChoice = $state('steam-market|USD');
-	let kind = $state('sale-median');
+	let sourceChoice = $state('skinport|EUR');
+	let kind = $state('lowest-listing');
 	let markets = $derived(
 		data.markets.length
 			? data.markets
-			: [
-					{ source: 'steam-market', currency: 'USD', kind: 'sale-median' },
-					{ source: 'steam-market', currency: 'USD', kind: 'lowest-listing' }
-				]
+			: [{ source: 'skinport', currency: 'EUR', kind: 'lowest-listing' }]
 	);
 	let sourceOptions = $derived([
 		...new Set(markets.map((market) => `${market.source}|${market.currency}`))
@@ -90,7 +151,7 @@
 		sourceChoice = value;
 		kind =
 			markets.find((market) => `${market.source}|${market.currency}` === value)?.kind ??
-			'sale-median';
+			'lowest-listing';
 	}
 	function add(row: Result) {
 		if (selected.length >= 1000 || selected.some((item) => key(item) === key(row))) return;
@@ -115,8 +176,8 @@
 		}
 		const to = new SvelteDate();
 		const from =
-			range === 'all' && data.stats.earliest
-				? new SvelteDate(data.stats.earliest)
+			range === 'all' && data.stats.earliest_day
+				? new SvelteDate(data.stats.earliest_day)
 				: new SvelteDate(to);
 		if (range === '1h') from.setTime(to.getTime() - 3_600_000);
 		if (range === '24h') from.setTime(to.getTime() - 86_400_000);
@@ -124,10 +185,12 @@
 		if (range === '30d') from.setUTCDate(from.getUTCDate() - 30);
 		if (range === '1y') from.setUTCFullYear(from.getUTCFullYear() - 1);
 		if (range === '5y') from.setUTCFullYear(from.getUTCFullYear() - 5);
-		if (range === 'all' && !data.stats.earliest) from.setUTCFullYear(from.getUTCFullYear() - 1);
+		if (range === 'all' && !data.stats.earliest_day) from.setUTCFullYear(from.getUTCFullYear() - 1);
 		return { from: from.toISOString(), to: to.toISOString() };
 	}
 	function bucketLabel(seconds: number) {
+		if (seconds >= 7 * 86400) return 'weekly';
+		if (seconds >= 86400) return 'daily';
 		return seconds < 3600 ? `${seconds / 60} minute` : `${Math.round(seconds / 3600)} hour`;
 	}
 
@@ -256,19 +319,73 @@
 			<p class="eyebrow">market archive / counter-strike</p>
 			<h1>CS prices</h1>
 			<p class="lede">
-				Explore price histories for individual listings or compare groups of items over time.
+				Every CS2 skin, knife, glove, sticker, case and more, in every wear, StatTrak, Souvenir and
+				Doppler phase. Prices from Skinport, Steam, CSFloat and Buff163 are archived daily.
 			</p>
 		</div>
 		<div class="stats">
-			<div><strong>{number.format(data.stats.items)}</strong><span>listings indexed</span></div>
+			<div><strong>{number.format(data.stats.skins)}</strong><span>items</span></div>
+			<div><strong>{number.format(data.stats.configs)}</strong><span>configs</span></div>
 			<div>
-				<strong>≈{number.format(Number(data.stats.observations))}</strong><span
-					>stored observations</span
+				<strong>{number.format(data.stats.latest_rows ?? 0)}</strong><span
+					>prices {data.stats.latest_day ?? ''}</span
 				>
 			</div>
 		</div>
 	</header>
 
+	<section class="browse" aria-label="Browse items">
+		<div class="browse-bar">
+			<Input
+				type="search"
+				bind:value={browseQuery}
+				placeholder="Search AK-47 Redline, Karambit Doppler, Katowice 2014…"
+			/>
+			<NativeSelect bind:value={browseSort}
+				><option value="popular">Most listed</option><option value="price">Most expensive</option
+				><option value="name">Name</option></NativeSelect
+			>
+		</div>
+		<div class="kinds" role="group" aria-label="Type">
+			<button class:on={!browseKind} onclick={() => (browseKind = '')}>All</button>
+			{#each data.kinds as k (k.value)}<button
+					class:on={browseKind === k.value}
+					onclick={() => (browseKind = browseKind === k.value ? '' : k.value)}>{k.label}</button
+				>{/each}
+		</div>
+		<div class="hits" class:dim={browsing}>
+			{#each hits as hit (hit.slug)}
+				<a
+					class="hit"
+					href={`/projects/cs-prices/${hit.slug}`}
+					style:--rarity={hit.rarity_color ?? 'transparent'}
+				>
+					{#if hit.image}<img
+							src={hit.image}
+							alt=""
+							loading="lazy"
+							width="96"
+							height="72"
+						/>{:else}<span class="noimg"></span>{/if}
+					<span class="hit-name">{hit.name}</span>
+					<span class="hit-meta"
+						>{hit.from_cents != null ? `from ${euro.format(hit.from_cents / 100)}` : 'no listings'} ·
+						{hit.configs}
+						config{hit.configs === 1 ? '' : 's'}</span
+					>
+				</a>
+			{:else}
+				<p class="none">{browsing ? 'Searching…' : 'Nothing matches.'}</p>
+			{/each}
+		</div>
+		{#if moreLeft && hits.length >= 60}<div class="more">
+				<Button variant="outline" size="sm" onclick={loadMore} disabled={browsing}>Show more</Button
+				>
+			</div>{/if}
+	</section>
+
+	<h2 class="section-title">Compare over time</h2>
+
 	<div class="workspace">
 		<aside class="picker" aria-label="Series selection">
 			<div class="panel-heading">
@@ -357,11 +474,10 @@
 						></label
 					><label
 						>Range<NativeSelect bind:value={range}
-							><option value="1h">1 hour</option><option value="24h">24 hours</option><option
-								value="7d">7 days</option
-							><option value="30d">30 days</option><option value="1y">1 year</option><option
-								value="5y">5 years</option
-							><option value="all">All history</option><option value="custom">Custom</option
+							><option value="7d">7 days</option><option value="30d">30 days</option><option
+								value="1y">1 year</option
+							><option value="5y">5 years</option><option value="all">All history</option><option
+								value="custom">Custom</option
 							></NativeSelect
 						></label
 					>
@@ -394,9 +510,9 @@
 				{series.length} series with data · {sourceChoice.replace('|', ' · ')} · {kind.replaceAll(
 					'-',
 					' '
-				)} · {bucketSeconds ? `up to ${bucketLabel(bucketSeconds)} buckets` : 'choose a series'}.
-				Group lines average each listing equally within a bucket; raw observations remain in the
-				database.
+				)} · {bucketSeconds ? `${bucketLabel(bucketSeconds)} points` : 'choose a series'}. Group
+				lines average each config equally per point. Open an item above for its own page with every
+				config.
 			</p>
 		</section>
 	</div>
@@ -436,6 +552,95 @@
 	h3 {
 		font-size: 0.85rem;
 	}
+	.browse {
+		margin-bottom: 2.5rem;
+	}
+	.browse-bar {
+		display: grid;
+		grid-template-columns: 1fr 170px;
+		gap: 0.5rem;
+		margin-bottom: 0.6rem;
+	}
+	.kinds {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.3rem;
+		margin-bottom: 0.9rem;
+	}
+	.kinds button {
+		border: 1px solid var(--site-border);
+		background: var(--site-surface);
+		color: var(--site-muted);
+		border-radius: 999px;
+		padding: 0.25rem 0.7rem;
+		font-size: 0.74rem;
+	}
+	.kinds button:hover {
+		color: var(--site-text);
+		border-color: var(--site-text);
+	}
+	.kinds button.on {
+		background: var(--site-text);
+		color: var(--site-bg);
+		border-color: var(--site-text);
+	}
+	.hits {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(165px, 1fr));
+		gap: 0.5rem;
+		transition: opacity 0.15s;
+	}
+	.hits.dim {
+		opacity: 0.55;
+	}
+	.hit {
+		display: flex;
+		flex-direction: column;
+		gap: 0.25rem;
+		padding: 0.6rem 0.7rem 0.7rem;
+		border: 1px solid var(--site-border);
+		border-bottom: 2px solid var(--rarity);
+		background: var(--site-surface);
+		border-radius: 8px;
+		color: var(--site-text);
+		text-decoration: none;
+		transition:
+			transform 0.15s,
+			border-color 0.15s;
+	}
+	.hit:hover {
+		transform: translateY(-2px);
+		border-color: var(--site-text);
+		border-bottom-color: var(--rarity);
+	}
+	.hit img,
+	.noimg {
+		width: 100%;
+		height: 82px;
+		object-fit: contain;
+	}
+	.hit-name {
+		font-size: 0.78rem;
+		font-weight: 600;
+		line-height: 1.25;
+	}
+	.hit-meta {
+		color: var(--site-muted);
+		font-size: 0.68rem;
+	}
+	.none {
+		color: var(--site-muted);
+		font-size: 0.8rem;
+	}
+	.more {
+		display: flex;
+		justify-content: center;
+		margin-top: 0.8rem;
+	}
+	.section-title {
+		font-size: 1.25rem;
+		margin-bottom: 0.8rem;
+	}
 	.lede {
 		color: var(--site-muted);
 		max-width: 40rem;
@@ -637,6 +842,15 @@
 		}
 	}
 	@media (max-width: 600px) {
+		.browse-bar {
+			grid-template-columns: 1fr 130px;
+		}
+		.hits {
+			grid-template-columns: repeat(2, 1fr);
+		}
+		.stats {
+			gap: 1.2rem;
+		}
 		.intro {
 			display: block;
 		}

src/routes/projects/cs-prices/[slug]/+page.server.ts

@@ -0,0 +1,23 @@
+import { error } from '@sveltejs/kit';
+import { loadSeries, loadSkin, pickConfig, streams } from '#lib/server/cs-prices.js';
+import type { PageServerLoad } from './$types';
+
+// One skin (or sticker, case, agent, …) with every market config it has: wear, StatTrak,
+// Souvenir and Doppler phase. The selected config comes from ?v=&wear=&phase= so every config
+// has its own URL; its full daily history (EUR) is loaded here and the range is picked client-side.
+export const load: PageServerLoad = async ({ params, url }) => {
+	const found = await loadSkin(params.slug);
+	if (!found) error(404, 'Not Found');
+	const config = pickConfig(found.configs, url.searchParams);
+	const [streamList, history] = await Promise.all([
+		streams(),
+		config ? loadSeries(config, null) : Promise.resolve(null)
+	]);
+	return {
+		skin: found.skin,
+		configs: found.configs,
+		selected: config?.id ?? null,
+		streams: streamList,
+		history
+	};
+};

src/routes/projects/cs-prices/[slug]/+page.svelte

@@ -0,0 +1,653 @@
+<script lang="ts">
+	import PriceChart, { type PriceSeries } from '#lib/cs-prices/PriceChart.svelte';
+	import { phaseOrder, wearOrder, wearShort } from '#lib/cs-prices/catalog.js';
+	import type { PageProps } from './$types';
+
+	let { data }: PageProps = $props();
+	type Config = (typeof data.configs)[number];
+	type Variant = 'normal' | 'stattrak' | 'souvenir';
+
+	const colors: Record<string, string> = {
+		'skinport:lowest-listing': '#3b82f6',
+		'skinport:sale-median-24h': '#22c55e',
+		'steam-market:sale-avg': '#a855f7',
+		'steam-market:lowest-listing': '#d946ef',
+		'csfloat:lowest-listing': '#f59e0b',
+		'buff163:lowest-listing': '#ef4444',
+		'steam-market:sale-median-history': '#14b8a6',
+		'csfloat:sale-avg-history': '#a3e635'
+	};
+	const sourceNames: Record<string, string> = {
+		skinport: 'Skinport',
+		'steam-market': 'Steam',
+		csfloat: 'CSFloat',
+		buff163: 'Buff163'
+	};
+	const kindNames: Record<string, string> = {
+		'lowest-listing': 'lowest listing',
+		'sale-median-24h': 'sold, 24h median',
+		'sale-avg': 'sold, average',
+		'sale-median-history': 'sold, daily median (history)',
+		'sale-avg-history': 'sold, daily average (history)'
+	};
+	const eur = new Intl.NumberFormat('nl-NL', { style: 'currency', currency: 'EUR' });
+	const usd = new Intl.NumberFormat('nl-NL', { style: 'currency', currency: 'USD' });
+	const count = new Intl.NumberFormat('nl-NL');
+	const money = (cents: number | null | undefined) =>
+		cents == null ? '–' : eur.format(cents / 100);
+
+	let streamById = $derived(new Map(data.streams.map((s) => [s.id, s])));
+	let selected = $derived(data.configs.find((c) => c.id === data.selected) ?? null);
+	const variantOf = (c: { stattrak: boolean; souvenir: boolean }): Variant =>
+		c.souvenir ? 'souvenir' : c.stattrak ? 'stattrak' : 'normal';
+	let variants = $derived(
+		(['normal', 'stattrak', 'souvenir'] as Variant[]).filter((v) =>
+			data.configs.some((c) => variantOf(c) === v)
+		)
+	);
+	let currentVariant = $derived(selected ? variantOf(selected) : 'normal');
+	let wears = $derived(
+		wearOrder.filter((w) =>
+			data.configs.some((c) => c.wear === w && variantOf(c) === currentVariant)
+		)
+	);
+	let phases = $derived(
+		phaseOrder.filter((p) =>
+			data.configs.some(
+				(c) =>
+					c.phase === p && variantOf(c) === currentVariant && c.wear === (selected?.wear ?? null)
+			)
+		)
+	);
+
+	/** Best price to show for a config: lowest EUR listing, else the latest sale. */
+	function best(config: Config) {
+		const listings = config.prices.filter(
+			(p) => streamById.get(p.stream)?.kind === 'lowest-listing'
+		);
+		const pool = listings.length ? listings : config.prices;
+		return pool.length ? Math.min(...pool.map((p) => p.eur_cents)) : null;
+	}
+	function find(v: Variant, wear: string | null, phase: string | null) {
+		return data.configs.find((c) => variantOf(c) === v && c.wear === wear && c.phase === phase);
+	}
+	function href(config: Config | undefined | null) {
+		if (!config) return '?';
+		// eslint-disable-next-line svelte/prefer-svelte-reactivity -- local, non-reactive query builder
+		const params = new URLSearchParams();
+		params.set('v', variantOf(config));
+		if (config.wear) params.set('wear', wearShort[config.wear]);
+		if (config.phase) params.set('phase', config.phase);
+		return `?${params}`;
+	}
+	function forVariant(v: Variant) {
+		return (
+			find(v, selected?.wear ?? null, selected?.phase ?? null) ??
+			find(v, selected?.wear ?? null, null) ??
+			data.configs.find((c) => variantOf(c) === v && c.prices.length) ??
+			data.configs.find((c) => variantOf(c) === v)
+		);
+	}
+	function forWear(w: string) {
+		return find(currentVariant, w, selected?.phase ?? null) ?? find(currentVariant, w, null);
+	}
+	function configLabel(c: Config) {
+		const parts = [];
+		if (c.souvenir) parts.push('Souvenir');
+		if (c.stattrak) parts.push('StatTrak™');
+		if (c.wear) parts.push(c.wear);
+		if (c.phase) parts.push(c.phase);
+		return parts.join(' · ') || 'Standard';
+	}
+	function streamLabel(id: number, anyPhase = false) {
+		const s = streamById.get(id);
+		if (!s) return `Stream ${id}`;
+		return `${sourceNames[s.source] ?? s.source} ${kindNames[s.kind] ?? s.kind.replaceAll('-', ' ')}${anyPhase ? ' (any phase)' : ''}`;
+	}
+
+	let range = $state('all');
+	let cutoff = $derived.by(() => {
+		if (range === 'all') return 0;
+		const days = { '30d': 30, '90d': 90, '1y': 365 }[range] ?? 0;
+		return Date.now() - days * 86_400_000;
+	});
+	let series = $derived<PriceSeries[]>(
+		(data.history?.series ?? [])
+			.map((s) => {
+				const stream = streamById.get(s.stream);
+				return {
+					key: `${s.stream}:${s.anyPhase}`,
+					name: streamLabel(s.stream, s.anyPhase),
+					color: stream ? colors[`${stream.source}:${stream.kind}`] : undefined,
+					dashed: s.anyPhase,
+					points: s.points
+						.map(([day, cents]) => [Date.parse(day), cents] as [number, number])
+						.filter(([t]) => t >= cutoff)
+				};
+			})
+			.filter((s) => s.points.length)
+	);
+	let days = $derived(new Set(series.flatMap((s) => s.points.map(([t]) => t))).size);
+	let current = $derived(
+		(selected?.prices ?? [])
+			.map((p) => ({ ...p, stream: streamById.get(p.stream), id: p.stream }))
+			.sort((a, b) => a.eur_cents - b.eur_cents)
+	);
+	const spanOrder = ['24h', '7d', '30d', '90d'];
+	let windows = $derived(
+		[...(data.history?.windows ?? [])].sort(
+			(a, b) =>
+				a.source.localeCompare(b.source) || spanOrder.indexOf(a.span) - spanOrder.indexOf(b.span)
+		)
+	);
+	let windowSources = $derived([...new Set(windows.map((w) => w.source))]);
+	const fxCents = (cents: number | null, currency: string) =>
+		cents == null
+			? null
+			: currency === 'USD'
+				? Math.round(cents * (data.history?.fx?.rate ?? 0.92))
+				: cents;
+	let title = $derived(
+		selected && selected.market_hash_name !== data.skin.name
+			? `${selected.market_hash_name}${selected.phase ? ` (${selected.phase})` : ''}`
+			: data.skin.name
+	);
+	let image = $derived(selected?.icon_url ?? data.skin.image);
+</script>
+
+<svelte:head>
+	<title>{title} · CS prices · Stan Runge</title>
+	<meta
+		name="description"
+		content={`Daily ${data.skin.name} prices for every wear, StatTrak, Souvenir and phase, from Skinport, Steam, CSFloat and Buff163.`}
+	/>
+</svelte:head>
+
+<div class="cs-item">
+	<a class="back" href="/projects/cs-prices">← CS prices</a>
+	<header class="head">
+		{#if image}<img src={image} alt="" width="160" height="120" loading="eager" />{/if}
+		<div class="title">
+			<p class="eyebrow">
+				<span class="rarity" style:--rarity={data.skin.rarity_color ?? 'var(--site-muted)'}></span>
+				{[data.skin.rarity, data.skin.category ?? data.skin.kind].filter(Boolean).join(' · ')}
+			</p>
+			<h1>{data.skin.name}</h1>
+			<p class="meta">
+				{#if data.skin.min_float != null}Float {data.skin.min_float.toFixed(
+						2
+					)}–{data.skin.max_float?.toFixed(2)} ·
+				{/if}{data.configs.length} config{data.configs.length === 1 ? '' : 's'}
+				{#if data.skin.collections?.length}
+					· {data.skin.collections.join(', ')}{/if}
+			</p>
+		</div>
+		{#if selected}<div class="price">
+				<strong>{money(best(selected))}</strong><span>{configLabel(selected)}</span>
+			</div>{/if}
+	</header>
+
+	{#if data.configs.length > 1}
+		<nav class="configs" aria-label="Config">
+			{#if variants.length > 1}
+				<div class="row">
+					{#each variants as v (v)}
+						{@const target = forVariant(v)}
+						<a
+							class="chip"
+							class:on={currentVariant === v}
+							class:st={v === 'stattrak'}
+							class:sv={v === 'souvenir'}
+							href={href(target)}
+							data-sveltekit-reset="false"
+							data-sveltekit-replacestate
+							>{v === 'normal' ? 'Normal' : v === 'stattrak' ? 'StatTrak™' : 'Souvenir'}</a
+						>
+					{/each}
+				</div>
+			{/if}
+			{#if wears.length}
+				<div class="row">
+					{#each wears as w (w)}
+						{@const target = forWear(w)}
+						<a
+							class="chip wear"
+							class:on={selected?.wear === w}
+							href={href(target)}
+							data-sveltekit-reset="false"
+							data-sveltekit-replacestate
+							title={w}><b>{wearShort[w]}</b><small>{target ? money(best(target)) : '–'}</small></a
+						>
+					{/each}
+				</div>
+			{/if}
+			{#if phases.length}
+				{@const any = find(currentVariant, selected?.wear ?? null, null)}
+				<div class="row">
+					{#if any}<a
+							class="chip"
+							class:on={!selected?.phase}
+							href={href(any)}
+							data-sveltekit-reset="false"
+							data-sveltekit-replacestate>Any phase</a
+						>{/if}
+					{#each phases as p (p)}
+						{@const target = find(currentVariant, selected?.wear ?? null, p)}
+						<a
+							class="chip phase"
+							class:on={selected?.phase === p}
+							data-phase={p}
+							href={href(target)}
+							data-sveltekit-reset="false"
+							data-sveltekit-replacestate
+							><b>{p.replace('Phase ', 'P')}</b><small>{target ? money(best(target)) : '–'}</small
+							></a
+						>
+					{/each}
+				</div>
+			{/if}
+		</nav>
+	{/if}
+
+	{#if current.length}
+		<section class="now" aria-label="Latest prices">
+			{#each current as p (p.id)}
+				<div
+					class="tile"
+					style:--accent={p.stream ? colors[`${p.stream.source}:${p.stream.kind}`] : undefined}
+				>
+					<span>{streamLabel(p.id)}</span>
+					<strong>{money(p.eur_cents)}</strong>
+					<small
+						>{p.stream?.currency === 'USD' ? `${usd.format(p.cents / 100)} · ` : ''}{p.volume !=
+						null
+							? `${count.format(p.volume)} ${p.stream?.kind === 'lowest-listing' ? 'listed' : 'sold'} · `
+							: ''}{p.day}</small
+					>
+				</div>
+			{/each}
+		</section>
+	{/if}
+
+	<section class="card chart-card" aria-label="Price history">
+		<div class="toolbar">
+			<h2>Price history <small>EUR · daily</small></h2>
+			<div class="ranges" role="group" aria-label="Range">
+				{#each ['30d', '90d', '1y', 'all'] as r (r)}
+					<button class:on={range === r} onclick={() => (range = r)}
+						>{r === 'all' ? 'All' : r}</button
+					>
+				{/each}
+			</div>
+		</div>
+		{#if series.length}
+			<PriceChart {series} kind="daily" currency="EUR" height="min(52vh, 420px)" zoom={days > 30} />
+			<p class="note">
+				{days} day{days === 1 ? '' : 's'} of history · USD sources at the ECB rate of each day{data
+					.history?.fx
+					? ` (now ${data.history.fx.rate.toFixed(4)} €/$)`
+					: ''} · dashed = price for any phase
+			</p>
+		{:else}
+			<div class="empty">
+				<strong>No prices yet for this config</strong>
+				<p>Prices are collected daily for every config; untraded ones stay empty.</p>
+			</div>
+		{/if}
+	</section>
+
+	{#if windows.length}
+		<section class="card" aria-label="Recent sales">
+			<h2>Recent sales</h2>
+			<div class="table-wrap">
+				<table>
+					<thead
+						><tr
+							><th>Source</th>{#each spanOrder as s (s)}<th>{s}</th>{/each}</tr
+						></thead
+					>
+					<tbody>
+						{#each windowSources as source (source)}
+							<tr>
+								<th
+									>{sourceNames[source] ?? source}{windows.find((w) => w.source === source)
+										?.anyPhase
+										? ' (any phase)'
+										: ''}</th
+								>
+								{#each spanOrder as span (span)}
+									{@const w = windows.find((x) => x.source === source && x.span === span)}
+									<td>
+										{#if w}
+											{money(fxCents(w.median_cents ?? w.avg_cents, w.currency))}
+											{#if w.volume}<small>{count.format(w.volume)} sold</small>{/if}
+										{:else}–{/if}
+									</td>
+								{/each}
+							</tr>
+						{/each}
+					</tbody>
+				</table>
+			</div>
+			<p class="note">Skinport: median sale price and sales count. Steam: average sale price.</p>
+		</section>
+	{/if}
+
+	{#if data.configs.length > 1}
+		<section class="card" aria-label="All configs">
+			<h2>All configs</h2>
+			<div class="all">
+				{#each data.configs as c (c.id)}
+					<a
+						class="cfg"
+						class:on={c.id === data.selected}
+						href={href(c)}
+						data-sveltekit-reset="false"
+						data-sveltekit-replacestate><span>{configLabel(c)}</span><b>{money(best(c))}</b></a
+					>
+				{/each}
+			</div>
+		</section>
+	{/if}
+</div>
+
+<style>
+	.cs-item {
+		max-width: 1100px;
+		margin: 0 auto;
+		padding: 2rem clamp(0.9rem, 4vw, 2.5rem) 4rem;
+		color: var(--site-text);
+	}
+	.back {
+		color: var(--site-muted);
+		font-size: 0.8rem;
+		text-decoration: none;
+	}
+	.back:hover {
+		color: var(--site-text);
+	}
+	.head {
+		display: flex;
+		align-items: center;
+		gap: 1.2rem;
+		margin: 1rem 0 1.2rem;
+	}
+	.head img {
+		width: 128px;
+		height: auto;
+		object-fit: contain;
+		flex: none;
+		filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.35));
+	}
+	.title {
+		flex: 1;
+		min-width: 0;
+	}
+	.eyebrow {
+		color: var(--site-muted);
+		text-transform: uppercase;
+		letter-spacing: 0.14em;
+		font-size: 0.66rem;
+		font-weight: 700;
+		display: flex;
+		align-items: center;
+		gap: 0.45rem;
+	}
+	.rarity {
+		width: 0.6rem;
+		height: 0.6rem;
+		border-radius: 50%;
+		background: var(--rarity);
+		box-shadow: 0 0 10px var(--rarity);
+	}
+	h1 {
+		font-size: clamp(1.6rem, 4.5vw, 2.6rem);
+		line-height: 1.05;
+		letter-spacing: -0.05em;
+		margin: 0.35rem 0 0.4rem;
+	}
+	h2 {
+		font-size: 1rem;
+		letter-spacing: -0.03em;
+		margin-bottom: 0.7rem;
+	}
+	h2 small {
+		color: var(--site-muted);
+		font-weight: 500;
+		font-size: 0.72rem;
+		margin-left: 0.35rem;
+	}
+	.meta {
+		color: var(--site-muted);
+		font-size: 0.8rem;
+	}
+	.price {
+		text-align: right;
+		display: flex;
+		flex-direction: column;
+	}
+	.price strong {
+		font-size: 1.7rem;
+		letter-spacing: -0.05em;
+	}
+	.price span {
+		color: var(--site-muted);
+		font-size: 0.72rem;
+	}
+	.configs {
+		display: flex;
+		flex-direction: column;
+		gap: 0.45rem;
+		margin-bottom: 1rem;
+	}
+	.row {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.35rem;
+	}
+	.chip {
+		display: inline-flex;
+		align-items: baseline;
+		gap: 0.4rem;
+		border: 1px solid var(--site-border);
+		background: var(--site-surface);
+		color: var(--site-text);
+		border-radius: 6px;
+		padding: 0.4rem 0.65rem;
+		font-size: 0.78rem;
+		text-decoration: none;
+		transition:
+			border-color 0.15s,
+			transform 0.15s,
+			background 0.15s;
+	}
+	.chip small {
+		color: var(--site-muted);
+		font-size: 0.7rem;
+	}
+	.chip:hover {
+		border-color: var(--site-text);
+		transform: translateY(-1px);
+	}
+	.chip.on {
+		background: var(--site-text);
+		color: var(--site-bg);
+		border-color: var(--site-text);
+	}
+	.chip.on small {
+		color: inherit;
+		opacity: 0.75;
+	}
+	.chip.st:not(.on) {
+		color: #f97316;
+	}
+	.chip.sv:not(.on) {
+		color: #eab308;
+	}
+	.chip.phase[data-phase='Ruby'] b {
+		color: #ef4444;
+	}
+	.chip.phase[data-phase='Sapphire'] b {
+		color: #3b82f6;
+	}
+	.chip.phase[data-phase='Black Pearl'] b {
+		color: #a78bfa;
+	}
+	.chip.phase[data-phase='Emerald'] b {
+		color: #22c55e;
+	}
+	.chip.on.phase b {
+		color: inherit !important;
+	}
+	.now {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(165px, 1fr));
+		gap: 0.5rem;
+		margin-bottom: 1rem;
+	}
+	.tile {
+		border: 1px solid var(--site-border);
+		border-left: 3px solid var(--accent, var(--site-border));
+		background: var(--site-surface);
+		border-radius: 8px;
+		padding: 0.6rem 0.75rem;
+		display: flex;
+		flex-direction: column;
+		gap: 0.1rem;
+	}
+	.tile span,
+	.tile small {
+		color: var(--site-muted);
+		font-size: 0.68rem;
+	}
+	.tile strong {
+		font-size: 1.15rem;
+		letter-spacing: -0.03em;
+	}
+	.card {
+		border: 1px solid var(--site-border);
+		background: var(--site-surface);
+		border-radius: 8px;
+		padding: 1rem;
+		margin-bottom: 1rem;
+	}
+	.toolbar {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		gap: 0.8rem;
+		flex-wrap: wrap;
+	}
+	.ranges {
+		display: flex;
+		gap: 0.25rem;
+		margin-bottom: 0.7rem;
+	}
+	.ranges button {
+		border: 1px solid var(--site-border);
+		background: transparent;
+		color: var(--site-muted);
+		border-radius: 5px;
+		padding: 0.2rem 0.55rem;
+		font-size: 0.72rem;
+		cursor: pointer;
+	}
+	.ranges button:hover {
+		color: var(--site-text);
+	}
+	.ranges button.on {
+		background: var(--site-text);
+		color: var(--site-bg);
+	}
+	.note {
+		color: var(--site-muted);
+		font-size: 0.7rem;
+		margin-top: 0.5rem;
+	}
+	.empty {
+		min-height: 220px;
+		display: flex;
+		flex-direction: column;
+		align-items: center;
+		justify-content: center;
+		gap: 0.3rem;
+		text-align: center;
+	}
+	.empty p {
+		color: var(--site-muted);
+		font-size: 0.78rem;
+	}
+	.table-wrap {
+		overflow-x: auto;
+	}
+	table {
+		width: 100%;
+		border-collapse: collapse;
+		font-size: 0.8rem;
+	}
+	th,
+	td {
+		text-align: right;
+		padding: 0.4rem 0.5rem;
+		border-bottom: 1px solid var(--site-border);
+		white-space: nowrap;
+	}
+	th:first-child {
+		text-align: left;
+	}
+	thead th {
+		color: var(--site-muted);
+		font-weight: 600;
+		font-size: 0.7rem;
+	}
+	td small {
+		display: block;
+		color: var(--site-muted);
+		font-size: 0.66rem;
+	}
+	.all {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
+		gap: 0.3rem;
+	}
+	.cfg {
+		display: flex;
+		justify-content: space-between;
+		gap: 0.6rem;
+		padding: 0.45rem 0.6rem;
+		border: 1px solid var(--site-border);
+		border-radius: 6px;
+		font-size: 0.76rem;
+		color: var(--site-text);
+		text-decoration: none;
+		transition: border-color 0.15s;
+	}
+	.cfg:hover {
+		border-color: var(--site-text);
+	}
+	.cfg.on {
+		background: var(--site-hover);
+		border-color: var(--site-text);
+	}
+	.cfg span {
+		color: var(--site-muted);
+	}
+	@media (max-width: 640px) {
+		.head {
+			flex-wrap: wrap;
+		}
+		.head img {
+			width: 96px;
+		}
+		.price {
+			text-align: left;
+			width: 100%;
+			flex-direction: row;
+			align-items: baseline;
+			gap: 0.5rem;
+		}
+		.now {
+			grid-template-columns: repeat(2, 1fr);
+		}
+	}
+</style>

src/routes/projects/cs-prices/api/series/+server.ts

@@ -5,12 +5,14 @@ import type { RequestHandler } from './$types';
 const maxSeries = 1000;
 const maxDays = 365 * 20;
 
+// Compare explorer: daily prices (cs.daily_prices) for up to 1000 configs or groups, bucketed per
+// day, or per week for ranges over 400 days. Group lines average each config equally per bucket.
 export const POST: RequestHandler = async ({ request }) => {
 	const body = (await request.json().catch(() => ({}))) as Record<string, unknown>;
 	const dimension = typeof body.dimension === 'string' ? body.dimension : 'item';
-	const kind = typeof body.kind === 'string' ? body.kind : 'sale-median';
-	const source = typeof body.source === 'string' ? body.source : 'steam-market';
-	const currency = typeof body.currency === 'string' ? body.currency : 'USD';
+	const kind = typeof body.kind === 'string' ? body.kind : 'lowest-listing';
+	const source = typeof body.source === 'string' ? body.source : 'skinport';
+	const currency = typeof body.currency === 'string' ? body.currency : 'EUR';
 	const ids = Array.isArray(body.ids) ? body.ids : [];
 	const values = Array.isArray(body.values) ? body.values : [];
 	if (
@@ -25,13 +27,13 @@ export const POST: RequestHandler = async ({ request }) => {
 	)
 		return Response.json({ error: 'Invalid selection' }, { status: 400 });
 	if (dimension === 'item' ? !ids.length : !values.length)
-		return Response.json({ series: [], bucketSeconds: 0 });
+		return Response.json({ points: [], bucketSeconds: 0 });
 	const to = new Date(typeof body.to === 'string' ? body.to : Date.now());
 	const from = new Date(typeof body.from === 'string' ? body.from : to.getTime() - 365 * 86400_000);
 	if (Number.isNaN(+from) || Number.isNaN(+to) || from >= to || +to - +from > maxDays * 86400_000)
 		return Response.json({ error: 'Invalid date range' }, { status: 400 });
-	// Aim for at most 240 buckets per series. Raw observations remain untouched.
-	const seconds = Math.max(60, Math.ceil((+to - +from) / 1000 / 240 / 60) * 60);
+	const weekly = +to - +from > 400 * 86400_000;
+	const seconds = weekly ? 7 * 86400 : 86400;
 	const selection =
 		dimension === 'item'
 			? sql`JOIN cs.items i ON i.id = p.item_id AND i.id IN (${sql.join(
@@ -44,22 +46,22 @@ export const POST: RequestHandler = async ({ request }) => {
 				sql`,`
 			)})`;
 	const seriesKey = dimension === 'item' ? sql`i.id::text` : sql`d.value`;
+	const bucket = weekly ? sql`date_trunc('week', p.day)::date` : sql`p.day`;
 	const rows = await db.execute(sql`
-		WITH per_item AS (
-			SELECT ${seriesKey} AS series_key, p.item_id,
-				date_bin(make_interval(secs => ${seconds}), p.observed_at,
-					TIMESTAMPTZ '1970-01-01') AS bucket,
-				avg(p.price_cents) AS price_cents,
-				sum(p.volume) AS volume,
-				min(p.price_cents) AS min_cents,
-				max(p.price_cents) AS max_cents
-			FROM cs.price_observations p ${selection}
-			WHERE p.source = ${source} AND p.currency = ${currency} AND p.kind = ${kind}
-				AND p.observed_at >= ${from.toISOString()}::timestamptz
-				AND p.observed_at <= ${to.toISOString()}::timestamptz
+		WITH stream AS (
+			SELECT id FROM cs.price_streams
+			WHERE source = ${source} AND currency = ${currency} AND kind = ${kind}
+		), per_item AS (
+			SELECT ${seriesKey} AS series_key, p.item_id, ${bucket} AS bucket,
+				avg(p.price_cents) AS price_cents, sum(p.volume) AS volume,
+				min(p.price_cents) AS min_cents, max(p.price_cents) AS max_cents
+			FROM cs.daily_prices p ${selection}
+			WHERE p.stream_id = (SELECT id FROM stream)
+				AND p.day >= ${from.toISOString().slice(0, 10)}::date
+				AND p.day <= ${to.toISOString().slice(0, 10)}::date
 			GROUP BY 1, 2, 3
 		)
-		SELECT series_key, bucket, round(avg(price_cents))::int AS price_cents,
+		SELECT series_key, bucket::text AS bucket, round(avg(price_cents))::int AS price_cents,
 			count(*)::int AS items, sum(volume)::bigint AS volume,
 			min(min_cents)::int AS min_cents, max(max_cents)::int AS max_cents
 		FROM per_item GROUP BY 1, 2 ORDER BY 1, 2`);

src/routes/projects/cs-prices/api/skins/+server.ts

@@ -0,0 +1,13 @@
+import { searchSkins } from '#lib/server/cs-prices.js';
+import type { RequestHandler } from './$types';
+
+export const GET: RequestHandler = async ({ url }) => {
+	const skins = await searchSkins(
+		url.searchParams.get('q') ?? '',
+		url.searchParams.get('kind') ?? '',
+		url.searchParams.get('sort') ?? 'popular',
+		Number(url.searchParams.get('limit') ?? 60) || 60,
+		Number(url.searchParams.get('offset') ?? 0) || 0
+	);
+	return Response.json({ skins });
+};

src/routes/projects/worldwide-todo/+page.server.ts

@@ -18,18 +18,20 @@ export const load: PageServerLoad = async ({ url, parent }) => {
 	const status = STATUSES.includes(first('status')) ? first('status') : 'todo';
 	const sort = (SORTS as string[]).includes(first('sort')) ? (first('sort') as Sort) : 'updated';
 	const q = first('q').slice(0, 100);
+	const view = first('view') === 'map' ? 'map' : 'list';
 	const filter = { scale, category, status, q };
 	const [list, totals] = await Promise.all([listTasks(filter, sort, 500), counts(filter)]);
 	return {
 		filter,
 		sort,
+		view,
 		tasks: list.tasks,
 		counts: totals,
 		seo: {
 			title: 'The worldwide todo list',
 			description:
 				'A public todo list of real, sourced problems, from planet-scale to a single street. Anyone can suggest additions, edits and removals.',
-			index: !scale && !category && status === 'todo' && !q && sort === 'updated'
+			index: !scale && !category && status === 'todo' && !q && sort === 'updated' && view === 'list'
 		}
 	};
 };

src/routes/projects/worldwide-todo/+page.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
 	import { untrack } from 'svelte';
 	import TaskCard from '#lib/worldtodo/TaskCard.svelte';
+	import WorldMap from '#lib/worldtodo/WorldMap.svelte';
+	import StatusPill from '#lib/worldtodo/StatusPill.svelte';
 	import IconTile from '#lib/worldtodo/IconTile.svelte';
 	import { SCALE_ICONS, categoryIcon } from '#lib/worldtodo/icons';
 	import { subscribe } from '#lib/worldtodo/live';
@@ -12,6 +14,9 @@
 		type PublicTask
 	} from '#lib/worldtodo/shared';
 	import Plus from 'lucide-svelte/icons/plus';
+	import List from 'lucide-svelte/icons/list';
+	import MapIcon from 'lucide-svelte/icons/map';
+	import Earth from 'lucide-svelte/icons/earth';
 	import Search from 'lucide-svelte/icons/search';
 
 	let { data } = $props();
@@ -90,6 +95,31 @@
 	};
 
 	const f = $derived(data.filter);
+	const isMap = $derived(data.view === 'map');
+	// List / Map toggle keeps every filter in the URL (?view=map is shareable).
+	const viewHref = (view: 'list' | 'map') => {
+		// eslint-disable-next-line svelte/prefer-svelte-reactivity -- plain lookup/scratch, never read reactively
+		const p = new URLSearchParams();
+		if (f.scale) p.set('scale', f.scale);
+		if (f.category) p.set('category', f.category);
+		if (f.status !== 'todo') p.set('status', f.status);
+		if (f.q) p.set('q', f.q);
+		if (data.sort !== 'updated') p.set('sort', data.sort);
+		if (view === 'map') p.set('view', 'map');
+		const s = p.toString();
+		return `/projects/worldwide-todo${s ? `?${s}` : ''}`;
+	};
+	const pinnable = (t: PublicTask) => t.locationPrecision !== 'none';
+	const globalTasks = $derived(tasks.filter((t) => !pinnable(t)));
+	const mapListed = $derived(tasks.filter(pinnable));
+	const fitKey = $derived(JSON.stringify(data.filter));
+	let mapRef = $state<ReturnType<typeof WorldMap>>();
+	let hovered = $state<string | null>(null);
+	function cardClick(e: MouseEvent, task: PublicTask) {
+		if (!isMap || !mapRef || e.metaKey || e.ctrlKey || e.shiftKey || e.altKey || e.button) return;
+		e.preventDefault();
+		mapRef.focusTask(task.slug);
+	}
 	const total = $derived(data.counts.status.open + data.counts.status.in_progress);
 </script>
 
@@ -185,16 +215,75 @@
 	{#if f.scale}<input type="hidden" name="scale" value={f.scale} />{/if}
 	{#if f.category}<input type="hidden" name="category" value={f.category} />{/if}
 	{#if f.status !== 'todo'}<input type="hidden" name="status" value={f.status} />{/if}
+	{#if isMap}<input type="hidden" name="view" value="map" />{/if}
 </form>
 
-<p class="results" aria-live="polite">
+<div class="results-bar">
+	<p class="results" aria-live="polite">
 		{tasks.length} task{tasks.length === 1 ? '' : 's'}{#if f.q}&nbsp;matching “{f.q}”{/if}
+		{#if isMap}· {mapListed.length} on the map{/if}
 		{#if f.scale || f.category || f.q || f.status !== 'todo'}
-		· <a href="/projects/worldwide-todo" data-sveltekit-noscroll>clear filters</a>
+			· <a
+				href={isMap ? '/projects/worldwide-todo?view=map' : '/projects/worldwide-todo'}
+				data-sveltekit-noscroll>clear filters</a
+			>
 		{/if}
-</p>
+	</p>
+	<nav class="views" aria-label="View">
+		<a
+			href={viewHref('list')}
+			class={{ on: !isMap }}
+			aria-current={!isMap ? 'page' : undefined}
+			data-sveltekit-noscroll
+			data-sveltekit-keepfocus><List size={15} aria-hidden="true" />List</a
+		>
+		<a
+			href={viewHref('map')}
+			class={{ on: isMap }}
+			aria-current={isMap ? 'page' : undefined}
+			data-sveltekit-noscroll
+			data-sveltekit-keepfocus><MapIcon size={15} aria-hidden="true" />Map</a
+		>
+	</nav>
+</div>
 <p class="sr-only" aria-live="polite">{announce}</p>
 
+{#if isMap}
+	{#if globalTasks.length}
+		<section class="global" aria-label="Global tasks (no single place on the map)">
+			<h2><Earth size={15} aria-hidden="true" />Global <span>{globalTasks.length}</span></h2>
+			<ul>
+				{#each globalTasks as task (task.slug)}
+					{@const cat = catBySlug.get(task.category)}
+					<li>
+						<a
+							href="/projects/worldwide-todo/{task.slug}"
+							class={{ flash: flashing === task.slug }}
+						>
+							<span class="g-top">
+								<span class="badge">{task.scale === 'planet' ? 'Global' : 'No pin'}</span>
+								<span class="g-cat"
+									><i style="background:{cat?.colour ?? '#737373'}"></i>{cat?.label ??
+										task.category}</span
+								>
+								<StatusPill status={task.status} />
+							</span>
+							<span class="g-title">{task.title}</span>
+						</a>
+					</li>
+				{/each}
+			</ul>
+		</section>
+	{/if}
+	<WorldMap
+		bind:this={mapRef}
+		tasks={mapListed}
+		categories={data.categories}
+		highlight={hovered}
+		{fitKey}
+	/>
+{/if}
+
 <ul class="grid">
 	<li>
 		<a class="suggest" href="/projects/worldwide-todo/request?kind=add">
@@ -203,8 +292,14 @@
 			<span>Phrase it as something to do and link a source. It shows up here once approved.</span>
 		</a>
 	</li>
-	{#each tasks as task (task.slug)}
-		<li>
+	{#each isMap ? mapListed : tasks as task (task.slug)}
+		<li
+			onmouseenter={() => (hovered = task.slug)}
+			onmouseleave={() => (hovered = hovered === task.slug ? null : hovered)}
+			onfocusin={() => (hovered = task.slug)}
+			onfocusout={() => (hovered = hovered === task.slug ? null : hovered)}
+			onclickcapture={(e) => cardClick(e, task)}
+		>
 			<TaskCard
 				{task}
 				category={catBySlug.get(task.category)}
@@ -379,6 +474,133 @@
 		font-size: 0.8rem;
 		color: var(--site-muted);
 	}
+	.results-bar {
+		display: flex;
+		flex-wrap: wrap;
+		align-items: center;
+		justify-content: space-between;
+		gap: 0.5rem;
+	}
+	.views {
+		display: inline-flex;
+		gap: 0.35rem;
+	}
+	.views a {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.35rem;
+		padding: 0.35rem 0.8rem;
+		border: 1px solid var(--site-border);
+		border-radius: 0.7rem;
+		background: var(--site-surface);
+		color: var(--site-muted);
+		font-size: 0.82rem;
+		font-weight: 550;
+		text-decoration: none;
+		transition:
+			border-color 0.15s,
+			color 0.15s,
+			transform 0.15s;
+	}
+	.views a:hover,
+	.views a:focus-visible {
+		color: var(--site-text);
+		border-color: var(--site-muted);
+		transform: translateY(-1px);
+	}
+	.views a.on {
+		color: var(--site-text);
+		border-color: var(--site-text);
+		box-shadow: inset 0 0 0 1px var(--site-text);
+	}
+	.global h2 {
+		display: flex;
+		align-items: center;
+		gap: 0.4rem;
+		margin-bottom: 0.4rem;
+		font-size: 0.85rem;
+		font-weight: 600;
+	}
+	.global h2 :global(svg) {
+		color: #38bdf8;
+	}
+	.global h2 span {
+		color: var(--site-muted);
+		font-weight: 450;
+		font-variant-numeric: tabular-nums;
+	}
+	.global ul {
+		display: grid;
+		grid-auto-flow: column;
+		grid-auto-columns: minmax(15rem, 18rem);
+		gap: 0.5rem;
+		overflow-x: auto;
+		padding-bottom: 0.35rem;
+		scroll-snap-type: x proximity;
+		scrollbar-width: thin;
+	}
+	.global li {
+		scroll-snap-align: start;
+	}
+	.global a {
+		display: flex;
+		flex-direction: column;
+		gap: 0.35rem;
+		height: 100%;
+		padding: 0.6rem 0.7rem;
+		border: 1px solid var(--site-border);
+		border-radius: 0.75rem;
+		background: var(--site-surface);
+		color: var(--site-text);
+		text-decoration: none;
+		transition:
+			border-color 0.15s,
+			transform 0.15s,
+			background-color 0.6s;
+	}
+	.global a:hover,
+	.global a:focus-visible {
+		border-color: var(--site-muted);
+		transform: translateY(-1px);
+	}
+	.global a.flash {
+		background: color-mix(in srgb, var(--site-surface) 80%, #facc15);
+	}
+	.g-top {
+		display: flex;
+		flex-wrap: wrap;
+		align-items: center;
+		gap: 0.35rem;
+		font-size: 0.72rem;
+		color: var(--site-muted);
+	}
+	.badge {
+		padding: 0.05rem 0.45rem;
+		border-radius: 999px;
+		color: #fff;
+		font-weight: 600;
+		background: linear-gradient(135deg, #38bdf8, #16a34a);
+	}
+	.g-cat {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.3rem;
+	}
+	.g-cat i {
+		width: 0.55rem;
+		height: 0.55rem;
+		border-radius: 999px;
+	}
+	.g-title {
+		font-size: 0.85rem;
+		font-weight: 550;
+		line-height: 1.3;
+		display: -webkit-box;
+		-webkit-line-clamp: 2;
+		line-clamp: 2;
+		-webkit-box-orient: vertical;
+		overflow: hidden;
+	}
 	.results a {
 		color: var(--site-text);
 	}

src/routes/projects/worldwide-todo/api/tasks.geojson/+server.ts

@@ -0,0 +1,45 @@
+import { listTasks } from '#lib/server/worldtodo/store.js';
+import type { RequestHandler } from './$types';
+
+// GET /projects/worldwide-todo/api/tasks.geojson?scale=&category=&status=&q=
+// Every task with a map position (precision exact or approximate) as a GeoJSON
+// FeatureCollection, same filters as /api/tasks. Planet tasks and tasks without coordinates
+// are left out (precision 'none').
+export const GET: RequestHandler = async ({ url }) => {
+	const p = (k: string) => url.searchParams.get(k)?.trim() ?? '';
+	const scale = ['planet', 'region', 'country', 'city', 'street'].includes(p('scale'))
+		? p('scale')
+		: '';
+	const status = ['todo', 'open', 'in_progress', 'done', 'all'].includes(p('status'))
+		? p('status')
+		: 'todo';
+	const category = /^[a-z][a-z0-9-]{1,30}$/.test(p('category')) ? p('category') : '';
+	const { tasks } = await listTasks(
+		{ scale, category, status, q: p('q').slice(0, 100) },
+		'updated',
+		1000
+	);
+	const features = tasks
+		.filter((t) => t.locationPrecision !== 'none' && t.lat !== null && t.lon !== null)
+		.map((t) => ({
+			type: 'Feature' as const,
+			id: t.id,
+			geometry: { type: 'Point' as const, coordinates: [t.lon!, t.lat!] },
+			properties: {
+				slug: t.slug,
+				title: t.title,
+				scale: t.scale,
+				category: t.category,
+				status: t.status,
+				location_name: t.locationName,
+				location_precision: t.locationPrecision,
+				url: `${url.origin}/projects/worldwide-todo/${t.slug}`
+			}
+		}));
+	return new Response(JSON.stringify({ type: 'FeatureCollection', features }), {
+		headers: {
+			'content-type': 'application/geo+json; charset=utf-8',
+			'cache-control': 'public, max-age=30'
+		}
+	});
+};

src/routes/projects/worldwide-todo/queue/+page.svelte

@@ -60,6 +60,16 @@
 			new: formatValue(k, change[k])
 		}));
 	}
+	/** Coordinates the request proposes (picked on the map or typed), to check before approving. */
+	function proposedPosition(item: Item) {
+		const p = item.payload as Record<string, unknown>;
+		if (item.kind === 'delete' || !('lat' in p || 'lon' in p)) return null;
+		const lat = Number(p.lat ?? item.task?.lat);
+		const lon = Number(p.lon ?? item.task?.lon);
+		return p.lat !== null && p.lon !== null && Number.isFinite(lat) && Number.isFinite(lon)
+			? { lat, lon }
+			: null;
+	}
 	function tweakValues(item: Item) {
 		const base = item.task ? fieldsOf(item.task) : {};
 		return { ...base, ...item.payload } as Record<string, unknown>;
@@ -194,6 +204,15 @@
 									{/each}
 								</tbody>
 							</table>
+							{@const pos = proposedPosition(item)}
+							{#if pos}
+								<a
+									class="osm"
+									href="https://www.openstreetmap.org/?mlat={pos.lat}&mlon={pos.lon}#map=15/{pos.lat}/{pos.lon}"
+									target="_blank"
+									rel="noopener noreferrer">Check the proposed map position on OpenStreetMap ↗</a
+								>
+							{/if}
 						{/if}
 
 						<dl class="meta">
@@ -573,4 +592,10 @@
 			transform: none;
 		}
 	}
+	.osm {
+		display: inline-block;
+		margin-top: 0.4rem;
+		font-size: 0.78rem;
+		color: var(--site-text);
+	}
 </style>

src/routes/trackers/ai/+layout.server.ts

@@ -1,8 +1,8 @@
 import { isOwner } from '#lib/server/owner.js';
 import type { LayoutServerLoad } from './$types';
 
-// /trackers/ai: the news tab is public; bots and usage are owner-only (their own loads call
-// requireOwner, and hooks.server.ts 404s /trackers/ai/bots and /trackers/ai/usage as a backstop).
+// /trackers/ai: the news tab is public; bots, usage and setup are owner-only (their own loads call
+// requireOwner, and hooks.server.ts 404s /trackers/ai/bots, /usage and /setup as a backstop).
 export const load: LayoutServerLoad = (event) => {
 	const owner = isOwner(event);
 	if (owner) event.setHeaders({ 'cache-control': 'private, no-store' });

src/routes/trackers/ai/+layout.svelte

@@ -6,6 +6,7 @@
 	import Newspaper from 'lucide-svelte/icons/newspaper';
 	import Bot from 'lucide-svelte/icons/bot';
 	import Gauge from 'lucide-svelte/icons/gauge';
+	import SlidersHorizontal from 'lucide-svelte/icons/sliders-horizontal';
 
 	let { data, children } = $props();
 
@@ -14,7 +15,8 @@
 		...(data.owner
 			? [
 					{ name: 'bots', href: '/trackers/ai/bots', icon: Bot, locked: true },
-					{ name: 'usage', href: '/trackers/ai/usage', icon: Gauge, locked: true }
+					{ name: 'usage', href: '/trackers/ai/usage', icon: Gauge, locked: true },
+					{ name: 'setup', href: '/trackers/ai/setup', icon: SlidersHorizontal, locked: true }
 				]
 			: [])
 	]);
@@ -25,7 +27,10 @@
 		<TrackerIcon name="ai" class="size-10" />
 		<div>
 			<h1>ai</h1>
-			<p>AI and software news, plus what my bots are doing and how much I use each model.</p>
+			<p>
+				AI and software news, plus what my bots are doing, how much I use each model and how each
+				one is set up.
+			</p>
 		</div>
 	</header>
 	<nav class="ai-tabs" aria-label="AI tracker sections">
@@ -118,4 +123,7 @@
 	.tab-usage {
 		background: linear-gradient(135deg, #34d399, #0d9488);
 	}
+	.tab-setup {
+		background: linear-gradient(135deg, #a78bfa, #6d28d9);
+	}
 </style>

src/routes/trackers/ai/bots/+page.server.ts

@@ -4,8 +4,9 @@ import type { PageServerLoad } from './$types';
 
 // Owner only: one row per Grok Bot agent, short summaries written by Daisy (no transcripts).
 export const load: PageServerLoad = async (event) => {
+	// cache-control comes from the ai layout (owner) and hooks.server.ts; setting it here too threw
+	// header_already_set (500) for the owner.
 	requireOwner(event);
-	event.setHeaders({ 'cache-control': 'private, no-store' });
 	return {
 		bots: await loadBots(),
 		now: Date.now(),

src/routes/trackers/ai/setup/+page.server.ts

@@ -0,0 +1,45 @@
+import { requireOwner } from '#lib/server/owner.js';
+import {
+	addEntry,
+	addProvider,
+	deleteEntry,
+	deleteProvider,
+	loadSetup,
+	updateEntry,
+	updateProvider
+} from '#lib/server/ai-setup.js';
+import { fail } from '@sveltejs/kit';
+import type { Actions, PageServerLoad, RequestEvent } from './$types';
+
+// Owner only: how each AI provider is set up (connections, skills, instructions, ...).
+// Actions don't run the load, so each one checks the owner again (hooks.server.ts also 404s
+// this path for everyone else).
+export const load: PageServerLoad = async (event) => {
+	// No setHeaders here: the ai layout already sets cache-control for the owner (setting it
+	// twice throws), and hooks.server.ts adds private, no-store on owner-only paths.
+	requireOwner(event);
+	return {
+		providers: await loadSetup(),
+		now: Date.now(),
+		seo: { title: 'AI tracker · setup', description: 'How my AI tools are set up.', index: false }
+	};
+};
+
+type Handler = (form: FormData) => Promise<{ ok: true } | { ok: false; message: string }>;
+const action = (fn: Handler) => async (event: RequestEvent) => {
+	requireOwner(event);
+	const form = await event.request.formData();
+	const r = await fn(form);
+	return r.ok
+		? { ok: true as const }
+		: fail(400, { message: r.message, scope: String(form.get('form_key') ?? '') });
+};
+
+export const actions: Actions = {
+	addProvider: action(addProvider),
+	updateProvider: action(updateProvider),
+	deleteProvider: action(deleteProvider),
+	addEntry: action(addEntry),
+	updateEntry: action(updateEntry),
+	deleteEntry: action(deleteEntry)
+};

src/routes/trackers/ai/setup/+page.svelte

@@ -0,0 +1,834 @@
+<script lang="ts">
+	import { enhance } from '$app/forms';
+	import type { SubmitFunction } from '@sveltejs/kit';
+	import { relativeTime } from '#lib/relative-time.js';
+	import Plug from 'lucide-svelte/icons/plug';
+	import WandSparkles from 'lucide-svelte/icons/wand-sparkles';
+	import ScrollText from 'lucide-svelte/icons/scroll-text';
+	import Puzzle from 'lucide-svelte/icons/puzzle';
+	import CalendarClock from 'lucide-svelte/icons/calendar-clock';
+	import Bot from 'lucide-svelte/icons/bot';
+	import KeyRound from 'lucide-svelte/icons/key-round';
+	import StickyNote from 'lucide-svelte/icons/sticky-note';
+	import Plus from 'lucide-svelte/icons/plus';
+	import Pencil from 'lucide-svelte/icons/pencil';
+	import Trash2 from 'lucide-svelte/icons/trash-2';
+	import ExternalLink from 'lucide-svelte/icons/external-link';
+
+	let { data, form } = $props();
+
+	type Provider = (typeof data.providers)[number];
+	type Entry = Provider['entries'][number];
+	type SectionKey = Entry['section'];
+
+	const SECTIONS = [
+		{
+			key: 'connections',
+			label: 'Connections',
+			hint: 'connectors, MCP servers, integrations',
+			icon: Plug,
+			from: '#38bdf8',
+			to: '#2563eb'
+		},
+		{
+			key: 'skills',
+			label: 'Skills',
+			hint: '',
+			icon: WandSparkles,
+			from: '#fbbf24',
+			to: '#ea580c'
+		},
+		{
+			key: 'instructions',
+			label: 'Custom instructions',
+			hint: 'markdown',
+			icon: ScrollText,
+			from: '#a78bfa',
+			to: '#7c3aed'
+		},
+		{
+			key: 'plugins',
+			label: 'Plugins & extensions',
+			hint: '',
+			icon: Puzzle,
+			from: '#f472b6',
+			to: '#db2777'
+		},
+		{
+			key: 'routines',
+			label: 'Scheduled tasks & routines',
+			hint: '',
+			icon: CalendarClock,
+			from: '#34d399',
+			to: '#059669'
+		},
+		{ key: 'agents', label: 'Agents & bots', hint: '', icon: Bot, from: '#fb923c', to: '#dc2626' },
+		{
+			key: 'plan',
+			label: 'Plan & API keys',
+			hint: 'labels only',
+			icon: KeyRound,
+			from: '#facc15',
+			to: '#ca8a04'
+		},
+		{
+			key: 'notes',
+			label: 'Notes',
+			hint: 'markdown',
+			icon: StickyNote,
+			from: '#a1a1aa',
+			to: '#52525b'
+		}
+	] as const satisfies readonly { key: SectionKey }[];
+	const MARKDOWN: SectionKey[] = ['instructions', 'notes'];
+
+	const COLORS = {
+		orange: ['#fdba74', '#c2410c'],
+		green: ['#6ee7b7', '#047857'],
+		blue: ['#93c5fd', '#1d4ed8'],
+		violet: ['#c4b5fd', '#6d28d9'],
+		pink: ['#f9a8d4', '#be185d'],
+		sky: ['#7dd3fc', '#0369a1'],
+		amber: ['#fde68a', '#b45309'],
+		zinc: ['#d4d4d8', '#3f3f46']
+	} as const;
+	type Color = keyof typeof COLORS;
+	const colorKeys = Object.keys(COLORS) as Color[];
+
+	/** Which inline form is open: p:new, p:<id>, e:<id> or n:<providerId>:<section>. */
+	let editing = $state<string | null>(null);
+	let busy = $state(false);
+	/** Form key of the last submit, so a validation error shows next to the right form. */
+	let lastKey = $state('');
+
+	const open = (key: string) => {
+		editing = editing === key ? null : key;
+	};
+	const submit =
+		(key: string, confirmText?: string): SubmitFunction =>
+		({ cancel }) => {
+			if (confirmText && !confirm(confirmText)) return cancel();
+			busy = true;
+			lastKey = key;
+			return async ({ result, update }) => {
+				await update({ reset: false });
+				busy = false;
+				if (result.type === 'success') editing = null;
+			};
+		};
+	const errorFor = (key: string) => (form?.message && lastKey === key ? form.message : null);
+
+	const grouped = (p: Provider) => {
+		const out = {} as Record<SectionKey, Entry[]>;
+		for (const e of p.entries) (out[e.section] ??= []).push(e);
+		return out;
+	};
+	const stamp = (iso: string) =>
+		new Date(iso).toLocaleString('en-GB', {
+			day: 'numeric',
+			month: 'short',
+			year: 'numeric',
+			hour: '2-digit',
+			minute: '2-digit',
+			timeZone: 'Europe/Amsterdam'
+		});
+	const host = (url: string) => {
+		try {
+			return new URL(url).hostname.replace(/^www\./, '');
+		} catch {
+			return url;
+		}
+	};
+</script>
+
+{#snippet providerForm(p?: Provider)}
+	{@const key = p ? `p:${p.id}` : 'p:new'}
+	<form
+		class="edit"
+		method="POST"
+		action={p ? '?/updateProvider' : '?/addProvider'}
+		use:enhance={submit(key)}
+	>
+		<input type="hidden" name="form_key" value={key} />
+		{#if p}<input type="hidden" name="id" value={p.id} />{/if}
+		<label>name<input name="name" value={p?.name ?? ''} maxlength="60" required /></label>
+		<label
+			>products<input
+				name="products"
+				value={p?.products ?? ''}
+				maxlength="120"
+				placeholder="e.g. app + CLI"
+			/></label
+		>
+		<fieldset class="colors">
+			<legend>colour</legend>
+			{#each colorKeys as c (c)}
+				<label class="color" title={c}>
+					<input type="radio" name="color" value={c} checked={(p?.color ?? 'zinc') === c} />
+					<span style:--from={COLORS[c][0]} style:--to={COLORS[c][1]}></span>
+				</label>
+			{/each}
+		</fieldset>
+		<div class="actions">
+			<button type="button" class="ghost" onclick={() => (editing = null)}>cancel</button>
+			<button type="submit" class="primary" disabled={busy}>{p ? 'save' : 'add provider'}</button>
+		</div>
+		{#if errorFor(key)}<p class="error" role="alert">{errorFor(key)}</p>{/if}
+	</form>
+{/snippet}
+
+{#snippet entryForm(p: Provider, section: SectionKey, e?: Entry)}
+	{@const key = e ? `e:${e.id}` : `n:${p.id}:${section}`}
+	<form
+		class="edit"
+		method="POST"
+		action={e ? '?/updateEntry' : '?/addEntry'}
+		use:enhance={submit(key)}
+	>
+		<input type="hidden" name="form_key" value={key} />
+		<input type="hidden" name="section" value={section} />
+		{#if e}<input type="hidden" name="id" value={e.id} />{:else}<input
+				type="hidden"
+				name="provider_id"
+				value={p.id}
+			/>{/if}
+		<label class="wide"
+			>name<input
+				name="name"
+				value={e?.name ?? ''}
+				maxlength="120"
+				required
+				placeholder={section === 'plan' ? 'e.g. Pro plan, or a key label like "server key"' : ''}
+			/></label
+		>
+		<label
+			>scope<select name="scope" value={e?.scope ?? ''}>
+				<option value="">—</option>
+				<option value="global">global</option>
+				<option value="per-repo">per-repo</option>
+				<option value="app">app</option>
+			</select></label
+		>
+		<label
+			>link<input
+				name="link"
+				type="url"
+				value={e?.link ?? ''}
+				maxlength="500"
+				placeholder="https://…"
+			/></label
+		>
+		<label class="wide"
+			>note<input
+				name="note"
+				value={e?.note ?? ''}
+				maxlength="400"
+				placeholder="short note"
+			/></label
+		>
+		{#if MARKDOWN.includes(section) || e?.body}
+			<label class="wide"
+				>{section === 'instructions' ? 'instructions' : 'details'} (markdown)<textarea
+					name="body"
+					rows="6"
+					value={e?.body ?? ''}
+					maxlength="20000"></textarea></label
+			>
+		{/if}
+		{#if section === 'plan'}
+			<p class="hint wide">
+				<KeyRound size={12} /> Labels only: never paste a key value. Anything that looks like a key or
+				token is refused.
+			</p>
+		{/if}
+		<div class="actions">
+			<button type="button" class="ghost" onclick={() => (editing = null)}>cancel</button>
+			<button type="submit" class="primary" disabled={busy}>{e ? 'save' : 'add'}</button>
+		</div>
+		{#if errorFor(key)}<p class="error" role="alert">{errorFor(key)}</p>{/if}
+	</form>
+{/snippet}
+
+<div class="bar">
+	<p class="meta">
+		{data.providers.length} providers · connections, skills and instructions per tool · labels only, never
+		keys
+	</p>
+	<button
+		type="button"
+		class="primary"
+		aria-expanded={editing === 'p:new'}
+		onclick={() => open('p:new')}><Plus size={15} />add provider</button
+	>
+</div>
+{#if editing === 'p:new'}
+	<div class="card new">{@render providerForm()}</div>
+{/if}
+
+{#if !data.providers.length}
+	<p class="empty">No providers yet.</p>
+{/if}
+
+<div class="cards">
+	{#each data.providers as p (p.id)}
+		{@const groups = grouped(p)}
+		{@const [from, to] = COLORS[p.color as Color] ?? COLORS.zinc}
+		{@const emptySections = SECTIONS.filter((s) => !groups[s.key])}
+		<article class="card" style:--from={from} style:--to={to}>
+			<header class="head">
+				<span class="avatar" aria-hidden="true">{p.name.slice(0, 1).toUpperCase()}</span>
+				<div class="title">
+					<h2>{p.name}</h2>
+					{#if p.products}<p class="products">{p.products}</p>{/if}
+				</div>
+				<time datetime={p.updatedAt} title={`${stamp(p.updatedAt)} (Amsterdam)`}
+					>updated {relativeTime(p.updatedAt, data.now)}</time
+				>
+				<div class="tools">
+					<button
+						type="button"
+						class="icon"
+						aria-label="edit {p.name}"
+						title="edit"
+						onclick={() => open(`p:${p.id}`)}><Pencil size={14} /></button
+					>
+					<form
+						method="POST"
+						action="?/deleteProvider"
+						use:enhance={submit(
+							`pd:${p.id}`,
+							`Delete ${p.name} and its ${p.entries.length} entries?`
+						)}
+					>
+						<input type="hidden" name="id" value={p.id} />
+						<button type="submit" class="icon danger" aria-label="delete {p.name}" title="delete"
+							><Trash2 size={14} /></button
+						>
+					</form>
+				</div>
+			</header>
+			{#if editing === `p:${p.id}`}{@render providerForm(p)}{/if}
+
+			{#each SECTIONS as s (s.key)}
+				{@const list = groups[s.key]}
+				{#if list || editing === `n:${p.id}:${s.key}`}
+					<details class="section" open={(list?.length ?? 0) <= 8}>
+						<summary>
+							<span class="sicon" style:--from={s.from} style:--to={s.to}><s.icon size={13} /></span
+							>
+							<span class="slabel">{s.label}</span>
+							{#if s.hint}<span class="shint">{s.hint}</span>{/if}
+							<span class="count">{list?.length ?? 0}</span>
+							<button
+								type="button"
+								class="icon add"
+								aria-label="add to {s.label}"
+								title="add"
+								onclick={(ev) => {
+									ev.preventDefault();
+									open(`n:${p.id}:${s.key}`);
+								}}><Plus size={14} /></button
+							>
+						</summary>
+						{#if editing === `n:${p.id}:${s.key}`}{@render entryForm(p, s.key)}{/if}
+						{#if list}
+							<ul class="entries">
+								{#each list as e (e.id)}
+									<li class="entry">
+										{#if editing === `e:${e.id}`}
+											{@render entryForm(p, s.key, e)}
+										{:else}
+											<div class="eline">
+												<span class="ename">{e.name}</span>
+												{#if e.scope}<span class="scope scope-{e.scope}">{e.scope}</span>{/if}
+												{#if e.link}
+													<a
+														class="elink"
+														href={e.link}
+														target="_blank"
+														rel="noopener noreferrer"
+														title={e.link}><ExternalLink size={12} />{host(e.link)}</a
+													>
+												{/if}
+												<span class="etools">
+													<button
+														type="button"
+														class="icon"
+														aria-label="edit {e.name}"
+														title="edit"
+														onclick={() => open(`e:${e.id}`)}><Pencil size={13} /></button
+													>
+													<form
+														method="POST"
+														action="?/deleteEntry"
+														use:enhance={submit(`ed:${e.id}`, `Delete “${e.name}”?`)}
+													>
+														<input type="hidden" name="id" value={e.id} />
+														<button
+															type="submit"
+															class="icon danger"
+															aria-label="delete {e.name}"
+															title="delete"><Trash2 size={13} /></button
+														>
+													</form>
+												</span>
+											</div>
+											{#if e.note}<p class="enote">{e.note}</p>{/if}
+											{#if e.bodyHtml}
+												<!-- eslint-disable-next-line svelte/no-at-html-tags -- owner-written markdown, rendered on the server with raw HTML escaped -->
+												<div class="md">{@html e.bodyHtml}</div>
+											{/if}
+										{/if}
+									</li>
+								{/each}
+							</ul>
+						{/if}
+						{#if s.key === 'plan' && list && editing !== `n:${p.id}:${s.key}`}
+							<p class="hint"><KeyRound size={12} /> Labels only, never key values.</p>
+						{/if}
+					</details>
+				{/if}
+			{/each}
+
+			{#if emptySections.some((s) => editing !== `n:${p.id}:${s.key}`)}
+				<div class="chips">
+					{#each emptySections as s (s.key)}
+						{#if editing !== `n:${p.id}:${s.key}`}
+							<button
+								type="button"
+								class="chip"
+								onclick={() => open(`n:${p.id}:${s.key}`)}
+								style:--from={s.from}
+								style:--to={s.to}><span class="sicon"><s.icon size={11} /></span>{s.label}</button
+							>
+						{/if}
+					{/each}
+				</div>
+			{/if}
+		</article>
+	{/each}
+</div>
+
+<style>
+	.bar {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		gap: 0.75rem;
+		flex-wrap: wrap;
+	}
+	.meta,
+	.empty {
+		color: var(--site-muted);
+		font-size: 0.85rem;
+	}
+	.empty {
+		padding: 2rem 0;
+	}
+	button {
+		cursor: pointer;
+		font: inherit;
+	}
+	.primary {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		gap: 0.3rem;
+		padding: 0.4rem 0.85rem;
+		border-radius: 0.5rem;
+		background: var(--site-text);
+		color: var(--site-bg);
+		font-size: 0.85rem;
+		font-weight: 600;
+		transition: opacity 0.15s;
+	}
+	.primary:hover {
+		opacity: 0.85;
+	}
+	.primary:disabled {
+		opacity: 0.5;
+	}
+	.ghost {
+		padding: 0.4rem 0.75rem;
+		border-radius: 0.5rem;
+		border: 1px solid var(--site-border);
+		color: var(--site-muted);
+		font-size: 0.85rem;
+	}
+	.ghost:hover {
+		color: var(--site-text);
+		border-color: var(--site-muted);
+	}
+	.icon {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		padding: 0.3rem;
+		border-radius: 0.4rem;
+		color: var(--site-muted);
+		transition:
+			color 0.15s,
+			background 0.15s;
+	}
+	.icon:hover {
+		color: var(--site-text);
+		background: color-mix(in srgb, var(--site-text) 8%, transparent);
+	}
+	.icon.danger:hover {
+		color: #f87171;
+		background: rgb(248 113 113 / 0.1);
+	}
+	/* Masonry-style columns: cards differ a lot in height (Grok has dozens of entries). */
+	.cards {
+		columns: 2 26rem;
+		column-gap: 0.75rem;
+	}
+	.cards > .card {
+		break-inside: avoid;
+		margin-bottom: 0.75rem;
+	}
+	.card {
+		display: flex;
+		flex-direction: column;
+		gap: 0.6rem;
+		padding: 0.85rem;
+		border: 1px solid var(--site-border);
+		border-radius: 0.75rem;
+		background: var(--site-surface);
+		transition: border-color 0.15s;
+		min-width: 0;
+	}
+	.card:hover {
+		border-color: var(--site-muted);
+	}
+	.head {
+		display: grid;
+		grid-template-columns: auto 1fr auto;
+		grid-template-areas: 'avatar title tools' 'avatar time tools';
+		column-gap: 0.7rem;
+		align-items: center;
+	}
+	.avatar {
+		grid-area: avatar;
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		width: 2.4rem;
+		height: 2.4rem;
+		border-radius: 0.7rem;
+		color: #fff;
+		font-weight: 700;
+		font-size: 1.05rem;
+		background: linear-gradient(135deg, var(--from), var(--to));
+	}
+	.title {
+		grid-area: title;
+		display: flex;
+		align-items: baseline;
+		gap: 0.5rem;
+		min-width: 0;
+		flex-wrap: wrap;
+	}
+	h2 {
+		font-weight: 600;
+		font-size: 1.05rem;
+		letter-spacing: -0.01em;
+	}
+	.products {
+		font-size: 0.8rem;
+		color: var(--site-muted);
+	}
+	.head time {
+		grid-area: time;
+		font-size: 0.72rem;
+		color: var(--site-muted);
+	}
+	.tools {
+		grid-area: tools;
+		display: flex;
+		gap: 0.1rem;
+	}
+	.section {
+		border-top: 1px solid var(--site-border);
+		padding-top: 0.5rem;
+	}
+	summary {
+		display: flex;
+		align-items: center;
+		gap: 0.45rem;
+		list-style: none;
+		cursor: pointer;
+		font-size: 0.85rem;
+	}
+	summary::-webkit-details-marker {
+		display: none;
+	}
+	.sicon {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		width: 1.4rem;
+		height: 1.4rem;
+		border-radius: 0.45rem;
+		color: #fff;
+		background: linear-gradient(135deg, var(--from), var(--to));
+		flex-shrink: 0;
+	}
+	.slabel {
+		font-weight: 600;
+	}
+	.shint {
+		font-size: 0.72rem;
+		color: var(--site-muted);
+	}
+	.count {
+		margin-left: auto;
+		font-size: 0.72rem;
+		color: var(--site-muted);
+		font-variant-numeric: tabular-nums;
+		padding: 0.05rem 0.45rem;
+		border: 1px solid var(--site-border);
+		border-radius: 999px;
+	}
+	.entries {
+		display: flex;
+		flex-direction: column;
+		margin-top: 0.4rem;
+	}
+	.entry {
+		padding: 0.35rem 0 0.35rem 1.85rem;
+		border-radius: 0.4rem;
+	}
+	.entry + .entry {
+		border-top: 1px dashed color-mix(in srgb, var(--site-border) 70%, transparent);
+	}
+	.eline {
+		display: flex;
+		align-items: center;
+		gap: 0.45rem;
+		flex-wrap: wrap;
+		font-size: 0.85rem;
+	}
+	.ename {
+		font-weight: 500;
+	}
+	.scope {
+		font-size: 0.66rem;
+		text-transform: uppercase;
+		letter-spacing: 0.05em;
+		padding: 0.05rem 0.4rem;
+		border-radius: 999px;
+		border: 1px solid var(--site-border);
+		color: var(--site-muted);
+	}
+	.scope-global {
+		color: #38bdf8;
+		border-color: rgb(56 189 248 / 0.4);
+	}
+	.scope-per-repo {
+		color: #a78bfa;
+		border-color: rgb(167 139 250 / 0.4);
+	}
+	.scope-app {
+		color: #34d399;
+		border-color: rgb(52 211 153 / 0.4);
+	}
+	.elink {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.2rem;
+		font-size: 0.75rem;
+		color: var(--site-muted);
+		text-decoration: none;
+	}
+	.elink:hover {
+		color: var(--site-text);
+	}
+	.etools {
+		margin-left: auto;
+		display: inline-flex;
+		opacity: 0;
+		transition: opacity 0.15s;
+	}
+	.entry:hover .etools,
+	.entry:focus-within .etools {
+		opacity: 1;
+	}
+	@media (hover: none) {
+		.etools {
+			opacity: 1;
+		}
+	}
+	.enote {
+		font-size: 0.8rem;
+		color: var(--site-muted);
+		line-height: 1.35;
+	}
+	.md {
+		margin-top: 0.3rem;
+		font-size: 0.82rem;
+		line-height: 1.45;
+		padding: 0.5rem 0.65rem;
+		border-left: 2px solid var(--site-border);
+		overflow-wrap: anywhere;
+	}
+	.md :global(p + p),
+	.md :global(ul),
+	.md :global(ol) {
+		margin-top: 0.4rem;
+	}
+	.md :global(ul) {
+		list-style: disc;
+		padding-left: 1.1rem;
+	}
+	.md :global(ol) {
+		list-style: decimal;
+		padding-left: 1.1rem;
+	}
+	.md :global(code) {
+		font-size: 0.78rem;
+		padding: 0.05rem 0.3rem;
+		border-radius: 0.3rem;
+		background: color-mix(in srgb, var(--site-text) 8%, transparent);
+	}
+	.md :global(a) {
+		text-decoration: underline;
+	}
+	.chips {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.35rem;
+		border-top: 1px solid var(--site-border);
+		padding-top: 0.55rem;
+	}
+	.chip {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.35rem;
+		padding: 0.2rem 0.6rem 0.2rem 0.25rem;
+		border: 1px dashed var(--site-border);
+		border-radius: 999px;
+		font-size: 0.75rem;
+		color: var(--site-muted);
+		transition:
+			color 0.15s,
+			border-color 0.15s;
+	}
+	.chip:hover {
+		color: var(--site-text);
+		border-color: var(--site-muted);
+	}
+	.chip .sicon {
+		width: 1.15rem;
+		height: 1.15rem;
+		border-radius: 999px;
+	}
+	.edit {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(min(100%, 10rem), 1fr));
+		gap: 0.5rem;
+		align-items: end;
+		padding: 0.7rem;
+		margin-top: 0.4rem;
+		border: 1px solid var(--site-border);
+		border-radius: 0.6rem;
+		background: var(--site-bg);
+	}
+	.entry .edit {
+		margin-left: -1.85rem;
+	}
+	.edit label,
+	.colors legend {
+		display: flex;
+		flex-direction: column;
+		gap: 0.2rem;
+		font-size: 0.7rem;
+		text-transform: uppercase;
+		letter-spacing: 0.06em;
+		color: var(--site-muted);
+	}
+	.edit .wide {
+		grid-column: 1 / -1;
+	}
+	.edit input:not([type='radio']),
+	.edit select,
+	.edit textarea {
+		font: inherit;
+		font-size: 0.85rem;
+		text-transform: none;
+		letter-spacing: normal;
+		color: var(--site-text);
+		background: var(--site-surface);
+		border: 1px solid var(--site-border);
+		border-radius: 0.5rem;
+		padding: 0.35rem 0.5rem;
+		min-width: 0;
+		box-sizing: border-box;
+	}
+	.edit input:not([type='radio']),
+	.edit select {
+		height: 2.1rem;
+	}
+	.edit textarea {
+		resize: vertical;
+		font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+		font-size: 0.8rem;
+	}
+	.colors {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 0.35rem;
+		align-items: center;
+		border: 0;
+		padding: 0;
+	}
+	.colors legend {
+		margin-bottom: 0.25rem;
+	}
+	.color input {
+		position: absolute;
+		opacity: 0;
+		pointer-events: none;
+	}
+	.color span {
+		display: block;
+		width: 1.4rem;
+		height: 1.4rem;
+		border-radius: 0.45rem;
+		background: linear-gradient(135deg, var(--from), var(--to));
+		outline: 2px solid transparent;
+		outline-offset: 2px;
+		cursor: pointer;
+	}
+	.color input:checked + span {
+		outline-color: var(--site-text);
+	}
+	.color input:focus-visible + span {
+		outline-color: #38bdf8;
+	}
+	.actions {
+		grid-column: 1 / -1;
+		display: flex;
+		justify-content: flex-end;
+		gap: 0.4rem;
+	}
+	.hint {
+		display: flex;
+		align-items: center;
+		gap: 0.3rem;
+		font-size: 0.72rem;
+		color: #ca8a04;
+		margin-top: 0.35rem;
+	}
+	.edit .hint {
+		margin-top: 0;
+	}
+	.error {
+		grid-column: 1 / -1;
+		color: #f87171;
+		font-size: 0.8rem;
+	}
+	.new {
+		padding: 0.2rem 0.85rem 0.85rem;
+	}
+</style>

src/routes/trackers/ai/usage/+page.server.ts

@@ -6,8 +6,9 @@ import type { Actions, PageServerLoad } from './$types';
 // Owner only: dated usage numbers per provider. Actions don't run the load, so each
 // action checks the owner again (hooks.server.ts also 404s this path for everyone else).
 export const load: PageServerLoad = async (event) => {
+	// cache-control comes from the ai layout (owner) and hooks.server.ts; setting it here too threw
+	// header_already_set (500) for the owner.
 	requireOwner(event);
-	event.setHeaders({ 'cache-control': 'private, no-store' });
 	return {
 		entries: await loadUsage(),
 		seo: { title: 'AI tracker · usage', description: 'My AI usage.', index: false }

src/routes/trackers/math/+page.server.ts

@@ -0,0 +1,33 @@
+import { MATH_PRIVATE } from '#lib/math.js';
+import { applyFromForm, loadMath } from '#lib/server/math.js';
+import { isOwner, requireOwner } from '#lib/server/owner.js';
+import { fail } from '@sveltejs/kit';
+import type { Actions, PageServerLoad } from './$types';
+
+// Math tracker: Evan Chen's "An Infinitely Large Napkin". Private by default (MATH_PRIVATE in
+// #lib/math): then everyone else gets a 404 for the page and its __data.json, and
+// hooks.server.ts 404s the path as a backstop. Edits are always owner-only.
+export const load: PageServerLoad = async (event) => {
+	if (MATH_PRIVATE) requireOwner(event);
+	const owner = isOwner(event);
+	if (owner) event.setHeaders({ 'cache-control': 'private, no-store' });
+	return {
+		owner,
+		private: MATH_PRIVATE,
+		now: Date.now(),
+		...(await loadMath(owner)),
+		seo: {
+			title: 'Math tracker',
+			description: "Working through Evan Chen's An Infinitely Large Napkin, chapter by chapter.",
+			index: !MATH_PRIVATE
+		}
+	};
+};
+
+export const actions: Actions = {
+	progress: async (event) => {
+		requireOwner(event);
+		const r = await applyFromForm(await event.request.formData());
+		return r.ok ? { ok: true } : fail(400, { message: r.message });
+	}
+};

src/routes/trackers/tasks/+page.svelte

@@ -20,6 +20,7 @@
 	import Sparkles from 'lucide-svelte/icons/sparkles';
 	import RefreshCw from 'lucide-svelte/icons/refresh-cw';
 	import TriangleAlert from 'lucide-svelte/icons/triangle-alert';
+	import TrendingUp from 'lucide-svelte/icons/trending-up';
 	import type { SubmitFunction } from '@sveltejs/kit';
 	import type { PageProps } from './$types';
 
@@ -202,6 +203,8 @@
 			: `${n.toLocaleString('en-GB')}${unit ? ` ${unit}` : ''}`;
 	// Auto metrics (goal.metricKey): stacked bar per part, colourful on the black/white base.
 	const PART_COLORS = ['rgb(14 165 233)', 'rgb(245 158 11)', 'rgb(168 85 247)', 'rgb(16 185 129)'];
+	const money2 = (n: number) =>
+		new Intl.NumberFormat('nl-NL', { style: 'currency', currency: 'EUR' }).format(n);
 	const partPct = (v: number, target: number) => Math.max(0, Math.min(100, (v / target) * 100));
 	const pctLabel = (v: number, target: number) => {
 		const p = (v / target) * 100;
@@ -521,9 +524,9 @@
 								aria-valuemax={target}
 								aria-valuenow={goal.metricCurrent}
 							>
-								{#each d.parts as p, i (p.key)}<span
+								{#each d.parts.filter((p) => p.value > 0) as p (p.key)}<span
 										style:width={`${partPct(p.value, target)}%`}
-										style:background={PART_COLORS[i % PART_COLORS.length]}
+										style:background={PART_COLORS[d.parts.indexOf(p) % PART_COLORS.length]}
 										title={`${p.label}: ${money(p.value, goal.metricUnit)}`}
 									></span>{/each}
 							</div>
@@ -531,12 +534,14 @@
 								{#each d.parts as p, i (p.key)}
 									<li>
 										<span class="dot" style:color={PART_COLORS[i % PART_COLORS.length]}
-											>{#if p.key === 'side-income'}<Sparkles size={12} />{:else}<Briefcase
+											>{#if p.key === 'side-income'}<Sparkles
 													size={12}
-												/>{/if}</span
+												/>{:else if p.key === 'investment-income'}<TrendingUp
+													size={12}
+												/>{:else}<Briefcase size={12} />{/if}</span
 										>
 										<span class="truncate" title={p.note ?? ''}>{p.label}</span>
-										<span class="amt">{money(p.value, goal.metricUnit)}</span>
+										<span class="amt">{money2(p.value)}</span>
 									</li>
 								{/each}
 							</ul>