Add story-graph narrative system (campaigns, editors, runtime)

Introduce the narrative layer as a directed story-flow graph: an authored
campaign a player walks node by node, replacing the interim slot/chapter model.

Schema (migrations 015-021):
- mysteries, global NPC templates + named poses, per-user playthroughs
- story_nodes, terminals, utterances (the flow graph and dialogue trees)
- clean cutover: retire slot cutscenes/chapters/seen_dialogue

Runtime:
- New Game creates a playthrough bound to the JWT identity (dev test-user fallback)
- advance() walks the graph cutscene -> dialogue -> level -> ..., auto-skipping gates
- branching dialogue: player choices route out through node terminals

Admin authoring:
- NPC editor: upload named poses to the gupi MinIO bucket
- mystery graph editor: vertical node canvas, wiring, entrypoint, delete-by-click
- dialogue crafter: utterance tree, Tab to add child, 1/2 speaker, undo

Content authored via the manifest importer / admin panel and seeded for Glass
Harbour. MinIO added to the dev stack; dev container runs in development mode.

Also includes a folder-widget simplification (removes open/close) and a
resolveUserId auth helper.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/migrations.integration.test.ts

@@ -33,7 +33,7 @@ suite('PostgreSQL migrations', () => {
     const migrationsDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..', 'migrations')
     const firstRun: string[] = []
     await runMigrations(testDatabaseUrl, migrationsDir, message => firstRun.push(message))
-    expect(firstRun.filter(message => message.startsWith('apply '))).toHaveLength(12)
+    expect(firstRun.filter(message => message.startsWith('apply '))).toHaveLength(21)
 
     const client = new Client({ connectionString: testDatabaseUrl })
     await client.connect()
@@ -43,11 +43,13 @@ suite('PostgreSQL migrations', () => {
       'boards', 'levels', 'level_templates', 'level_template_versions', 'exhibits', 'folder_exhibits',
       'document_exhibits', 'folder_memberships', 'exhibit_connections', 'metadata_fields', 'assets', 'schema_migrations',
       'party_exhibits', 'person_parties', 'organization_parties', 'brief_concepts', 'level_briefs',
-      'board_timeline_settings',
+      'board_views', 'timeline_views',
+      'mysteries', 'npcs', 'npc_poses', 'playthroughs',
+      'story_nodes', 'story_node_terminals', 'utterances',
     ]))
-    expect(tableNames).not.toEqual(expect.arrayContaining(['cases', 'widgets', 'widget_relations', 'playthroughs']))
+    expect(tableNames).not.toEqual(expect.arrayContaining(['cases', 'widgets', 'widget_relations', 'cutscenes', 'dialogue_steps', 'mystery_chapters', 'seen_dialogue']))
     const ledger = await client.query<{ count: string }>('SELECT COUNT(*)::text AS count FROM osint.schema_migrations')
-    expect(ledger.rows[0].count).toBe('12')
+    expect(ledger.rows[0].count).toBe('21')
     const connectionColumns = await client.query<{ column_name: string }>(`SELECT column_name FROM information_schema.columns WHERE table_schema='osint' AND table_name='exhibit_connections'`)
     expect(connectionColumns.rows.map(row => row.column_name)).toEqual(expect.arrayContaining(['label', 'tightness', 'tag_style', 'tag_position_percent', 'tag_lateral_offset']))
     const eventOccurrence = await client.query<{ is_nullable: string }>(`SELECT is_nullable FROM information_schema.columns WHERE table_schema='osint' AND table_name='event_exhibits' AND column_name='occurred_at'`)
@@ -56,7 +58,7 @@ suite('PostgreSQL migrations', () => {
 
     const secondRun: string[] = []
     await runMigrations(testDatabaseUrl, migrationsDir, message => secondRun.push(message))
-    expect(secondRun.filter(message => message.startsWith('skip  '))).toHaveLength(12)
+    expect(secondRun.filter(message => message.startsWith('skip  '))).toHaveLength(21)
     expect(secondRun.some(message => message.startsWith('apply '))).toBe(false)
   })
 })