Phase 5: campaign management & worldbuilding

- New entities (note/npc/quest/calendar): schemas, Dexie v4 tables, repos, hooks;
  campaign cascade-delete now covers them all
- Dashboard hub: campaign stats, navigation cards, party overview, recent rolls;
  opening a campaign lands here
- Notes/Wiki: tags, [[wiki-links]] with click-to-open/create, backlinks panel,
  full-text search, autosave
- NPC manager (role/location/faction/status) and Quest tracker (status +
  objectives checklist + reward)
- In-world Calendar: integer day counter + events (no real Date -> no timezone bug)
- Fix: calendarRepo.get is read-only (creating-on-read crashed inside liveQuery)

8 new unit tests (wikilinks + extended cascade), worldbuilding e2e.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/lib/db/db.ts

@@ -3,6 +3,7 @@ import type { Campaign } from '@/lib/schemas/campaign';
 import type { Character } from '@/lib/schemas/character';
 import type { Encounter } from '@/lib/schemas/encounter';
 import type { DiceRoll } from '@/lib/schemas/dice';
+import type { Note, Npc, Quest, Calendar } from '@/lib/schemas/world';
 import { characterDefaults } from '@/lib/schemas/character';
 
 /**
@@ -18,6 +19,10 @@ export class TtrpgDatabase extends Dexie {
   characters!: EntityTable<Character, 'id'>;
   encounters!: EntityTable<Encounter, 'id'>;
   diceRolls!: EntityTable<DiceRoll, 'id'>;
+  notes!: EntityTable<Note, 'id'>;
+  npcs!: EntityTable<Npc, 'id'>;
+  quests!: EntityTable<Quest, 'id'>;
+  calendars!: EntityTable<Calendar, 'campaignId'>;
 
   constructor() {
     super('ttrpg-manager');
@@ -49,6 +54,14 @@ export class TtrpgDatabase extends Dexie {
           if (e.log === undefined) e.log = [];
         });
     });
+
+    // v4 — Phase 5 worldbuilding: notes, NPCs, quests, calendar.
+    this.version(4).stores({
+      notes: 'id, campaignId',
+      npcs: 'id, campaignId',
+      quests: 'id, campaignId, status',
+      calendars: 'campaignId',
+    });
   }
 }