PUBG drop map: live squad map with WebSocket rooms

- server.js wraps Bun.serve to add /ws/<channel> upgrades (same server and port) and
  serve the map tiles from the host mount; Dockerfile now runs bun ./server.js
- ws hub (channel registry, origin check) + pubg-map channel: rooms by unguessable
  code, validated + rate-limited messages, per-room write queue, presence
- games.pubg_rooms / pubg_matches / pubg_markers; per-match sessions with history
- /trackers/games/pubg/map hub (owner: rooms, landings over time, history) and
  /trackers/games/pubg/map/<code> fullscreen Leaflet map (all 11 maps)
- deploy-remote.sh bind-mounts ~/pubg-maps; scripts/build-pubg-tiles.py rebuilds it

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

@@ -27,3 +27,4 @@ export * from './music';
 export * from './hardware';
 export * from './dataholders';
 export * from './stats';
+export * from './pubg-map';

src/lib/server/db/schema/pubg-map.ts

@@ -0,0 +1,62 @@
+import { doublePrecision, index, integer, text, uniqueIndex } from 'drizzle-orm/pg-core';
+import { gamesSchema } from './schemas';
+import { id, timestamps, timestamptz } from './helpers';
+
+// The live PUBG drop map (/trackers/games/pubg/map): rooms that friends join with an
+// unguessable share code, one match per game played (map, landings, plane path, hotspots,
+// vehicles, notes), and the markers themselves. Only the owner creates rooms and deletes
+// history; anyone with a room's code edits that room's current match over the site WebSocket.
+
+export const pubgRooms = gamesSchema.table('pubg_rooms', {
+	id: id(),
+	/** 20 characters of base62; the share link is /trackers/games/pubg/map/<code>. */
+	code: text('code').notNull().unique(),
+	name: text('name').notNull(),
+	...timestamps
+});
+
+export const pubgMatches = gamesSchema.table(
+	'pubg_matches',
+	{
+		id: id(),
+		roomId: integer('room_id')
+			.notNull()
+			.references(() => pubgRooms.id, { onDelete: 'cascade' }),
+		/** 1, 2, 3… within the room. */
+		number: integer('number').notNull(),
+		/** #lib/pubg-map/shared MAPS slug: erangel, miramar, sanhok, vikendi… */
+		map: text('map').notNull(),
+		startedAt: timestamptz('started_at').notNull().defaultNow(),
+		/** Set when "New match" archives it; null for the room's current match. */
+		endedAt: timestamptz('ended_at')
+	},
+	(t) => [
+		uniqueIndex('pubg_matches_room_number_idx').on(t.roomId, t.number),
+		index('pubg_matches_map_idx').on(t.map, t.startedAt)
+	]
+);
+
+export const pubgMarkers = gamesSchema.table(
+	'pubg_markers',
+	{
+		/** Made by the browser that placed it, so its own copy and the broadcast share an id. */
+		id: text('id').primaryKey(),
+		matchId: integer('match_id')
+			.notNull()
+			.references(() => pubgMatches.id, { onDelete: 'cascade' }),
+		/** landing, plane, hotspot, vehicle, poi, note. */
+		kind: text('kind').notNull(),
+		/** 0..1 across and down the map image. */
+		x: doublePrecision('x').notNull(),
+		y: doublePrecision('y').notNull(),
+		/** Plane path end point. */
+		x2: doublePrecision('x2'),
+		y2: doublePrecision('y2'),
+		label: text('label'),
+		/** Nickname and colour of whoever placed it (friends have no account). */
+		player: text('player').notNull(),
+		color: text('color').notNull(),
+		...timestamps
+	},
+	(t) => [index('pubg_markers_match_idx').on(t.matchId)]
+);