P14b: session chat (table + whispers) + saved campaign recap

- Sidebar gains tabs: Chat / Rolls / (GM) Recap. Chat supports table messages and
  private whispers (GM→player via a recipient picker; player→GM via a toggle).
  Server routes table to all and whispers to the target only (+server tests).
- Rolls + chat are persisted to a per-campaign session recap (Dexie v13 sessionLog
  table + sessionLogRepo); the GM's "Recap" tab shows it (survives reloads/sessions).
- wsSync: chat send/receive, optimistic local echo, persistLog for the GM.
- Realtime e2e: GM table message reaches the player; the player's reply reaches the GM.

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

server/src/rooms.test.ts

@@ -157,4 +157,36 @@ describe('RoomHub', () => {
     hub.privateState(player, 'not-the-secret', 'gm', { title: 'x', body: 'y' });
     expect(lastOf(player, 'error')?.code).toBe('forbidden');
   });
+
+  it('routes chat: table to all, whisper to the target only', () => {
+    const hub = new RoomHub();
+    const gm = fake(); hub.host(gm);
+    const hosted = lastOf(gm, 'hosted') as Extract<ServerMessage, { t: 'hosted' }>;
+    const p1 = fake(); hub.join(p1, hosted.joinCode);
+    const p2 = fake(); hub.join(p2, hosted.joinCode);
+    const p1id = lastOf(gm, 'roster')!.players.filter((p) => p.playerId !== 'gm')[0]!.playerId;
+    const chatCount = (s: ReturnType<typeof fake>) => s.msgs.filter((m) => m.t === 'chat').length;
+
+    // GM table → both players
+    hub.chat(gm, 'hello table');
+    expect(lastOf(p1, 'chat')).toMatchObject({ from: 'GM', body: 'hello table', scope: 'table' });
+    expect(lastOf(p2, 'chat')).toMatchObject({ scope: 'table' });
+
+    // GM whisper to p1 → only p1
+    const p2c = chatCount(p2);
+    hub.chat(gm, 'psst', p1id);
+    expect(lastOf(p1, 'chat')).toMatchObject({ from: 'GM', body: 'psst', scope: 'whisper' });
+    expect(chatCount(p2)).toBe(p2c);
+
+    // Player table → GM + the other player (not the sender)
+    hub.chat(p1, 'hi all');
+    expect(lastOf(gm, 'chat')).toMatchObject({ body: 'hi all', scope: 'table' });
+    expect(lastOf(p2, 'chat')).toMatchObject({ body: 'hi all', scope: 'table' });
+
+    // Player whisper → GM only
+    const p2c2 = chatCount(p2);
+    hub.chat(p1, 'private q', 'gm');
+    expect(lastOf(gm, 'chat')).toMatchObject({ body: 'private q', scope: 'whisper' });
+    expect(chatCount(p2)).toBe(p2c2);
+  });
 });