notes: private Obsidian vault tracker at /trackers/notes

Vault files stay the source of truth (bind-mounted read-write at /notes):
atomic writes chowned to the vault owner, hash-checked saves (409 on a
newer file), deletes to .trash. notes.* is a full-text/link index kept
current by a recursive watcher plus a 60s rescan; live updates over the
owner-only /ws/notes channel (paths and hashes only). Wikilinks, embeds,
backlinks, tags, callouts, image paste. Owner-only everywhere (404).

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

@@ -32,3 +32,4 @@ export * from './ai';
 export * from './movies';
 export * from './worldtodo';
 export * from './osu-goals';
+export * from './notes';

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

@@ -0,0 +1,70 @@
+import { sql } from 'drizzle-orm';
+import {
+	bigint,
+	boolean,
+	customType,
+	index,
+	integer,
+	jsonb,
+	primaryKey,
+	text
+} from 'drizzle-orm/pg-core';
+import { notesSchema } from './schemas';
+import { timestamptz } from './helpers';
+
+// Notes tracker (/trackers/notes, owner-only). The Obsidian vault (markdown files on the host,
+// Syncthing-synced, bind-mounted at NOTES_ROOT) is the source of truth; these tables are only
+// a search and link index that src/lib/server/notes/ rebuilds from the files (file watcher plus a
+// periodic rescan). Dropping and rebuilding them loses nothing.
+const tsvector = customType<{ data: string }>({ dataType: () => 'tsvector' });
+
+export const notesFiles = notesSchema.table(
+	'files',
+	{
+		/** Vault-relative posix path, e.g. "Cars/Toyota/Supra.md". */
+		path: text('path').primaryKey(),
+		/** note (.md), attachment (images, pdf, canvas…) or conflict (*.sync-conflict-*, never indexed as a note). */
+		kind: text('kind').notNull(),
+		folder: text('folder').notNull(),
+		title: text('title').notNull(),
+		ext: text('ext').notNull(),
+		size: bigint('size', { mode: 'number' }).notNull(),
+		mtime: timestamptz('mtime').notNull(),
+		/** sha256 of the file bytes; the editor's save-conflict check compares against it. */
+		hash: text('hash').notNull(),
+		tags: text('tags')
+			.array()
+			.notNull()
+			.default(sql`'{}'::text[]`),
+		frontmatter: jsonb('frontmatter').$type<Record<string, unknown>>(),
+		/** Note text without frontmatter (notes only), for snippets. */
+		body: text('body'),
+		search: tsvector('search'),
+		indexedAt: timestamptz('indexed_at').notNull().defaultNow()
+	},
+	(t) => [
+		index('files_search_idx').using('gin', t.search),
+		index('files_tags_idx').using('gin', t.tags),
+		index('files_folder_idx').on(t.folder),
+		index('files_kind_idx').on(t.kind)
+	]
+);
+
+export const notesLinks = notesSchema.table(
+	'links',
+	{
+		srcPath: text('src_path')
+			.notNull()
+			.references(() => notesFiles.path, { onDelete: 'cascade', onUpdate: 'cascade' }),
+		seq: integer('seq').notNull(),
+		/** Target as written ("Folder/Note", "image.png"), without #heading or |alias. */
+		target: text('target').notNull(),
+		/** Lowercased last segment without .md; backlinks match on it, then resolve exactly. */
+		targetKey: text('target_key').notNull(),
+		embed: boolean('embed').notNull().default(false)
+	},
+	(t) => [
+		primaryKey({ columns: [t.srcPath, t.seq] }),
+		index('links_target_key_idx').on(t.targetKey)
+	]
+);

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

@@ -28,3 +28,4 @@ export const statsSchema = pgSchema('stats');
 export const aiSchema = pgSchema('ai');
 export const moviesSchema = pgSchema('movies');
 export const worldtodoSchema = pgSchema('worldtodo');
+export const notesSchema = pgSchema('notes');