Fix Story 1.3: StateStore spec compliance and minor cleanup

Critical Fix:
- StateStore now uses global Hooks.callAll directly (per spec)
- Removed hooks parameter from StateStore constructor
- Updated module.js to pass only adapter.settings
- Updated tests to stub globalThis.Hooks

Minor Cleanup:
- Fixed misleading warning in SocketHandler.registerPendingOp
- Added clarifying comment for setMatrix _revision behavior

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

tests/fixtures/foundry-adapter.js

@@ -0,0 +1,94 @@
+/**
+ * tests/fixtures/foundry-adapter.js
+ *
+ * GAME_STUB — frozen minimal game object for FoundryAdapter constructor tests.
+ *
+ * Mirrors the six game sub-objects that FoundryAdapter surfaces delegate to:
+ *   game.settings, game.socket, game.users, game.user, game.scenes
+ *
+ * `Hooks` is a standalone global — not part of game — and is stubbed
+ * via `vi.stubGlobal('Hooks', HOOKS_STUB)` in individual test files.
+ * `ui.notifications` is similarly a standalone global.
+ */
+
+import { vi } from 'vitest';
+
+/** Minimal game.settings stub. All methods are vi.fn(). */
+const SETTINGS_STUB = {
+  register: vi.fn(),
+  get: vi.fn().mockReturnValue(null),
+  set: vi.fn().mockResolvedValue(undefined),
+};
+
+/** Minimal game.socket stub. */
+const SOCKET_STUB = {
+  emit: vi.fn(),
+  on: vi.fn(),
+  off: vi.fn(),
+};
+
+/** A representative user object. */
+const GM_USER = Object.freeze({ id: 'gm-user-1', name: 'GM', isGM: true });
+const PLAYER_USER = Object.freeze({ id: 'player-user-1', name: 'Player', isGM: false });
+
+/** Minimal game.users map-like stub. */
+const USERS_STUB = {
+  get: vi.fn((id) => {
+    if (id === GM_USER.id) return GM_USER;
+    if (id === PLAYER_USER.id) return PLAYER_USER;
+    return null;
+  }),
+  [Symbol.iterator]: vi.fn(function* () {
+    yield GM_USER;
+    yield PLAYER_USER;
+  }),
+};
+
+/** Minimal game.user (current user) stub. */
+const USER_STUB = Object.freeze({ id: GM_USER.id, name: GM_USER.name, isGM: true });
+
+/** A representative scene object. */
+const ACTIVE_SCENE = Object.freeze({ id: 'scene-1', name: 'Test Scene' });
+
+/** Minimal game.scenes stub. */
+const SCENES_STUB = {
+  active: ACTIVE_SCENE,
+  get: vi.fn((id) => (id === ACTIVE_SCENE.id ? ACTIVE_SCENE : null)),
+};
+
+/**
+ * Frozen minimal game object for FoundryAdapter constructor tests.
+ * Reset individual stubs between tests with `vi.clearAllMocks()` or per-spy.
+ */
+export const GAME_STUB = Object.freeze({
+  settings: SETTINGS_STUB,
+  socket: SOCKET_STUB,
+  users: USERS_STUB,
+  user: USER_STUB,
+  scenes: SCENES_STUB,
+});
+
+/** Exported stubs for targeted assertions in tests. */
+export { SETTINGS_STUB, SOCKET_STUB, USERS_STUB, USER_STUB, SCENES_STUB, GM_USER, PLAYER_USER, ACTIVE_SCENE };
+
+/**
+ * Minimal Hooks stub for vi.stubGlobal('Hooks', HOOKS_STUB).
+ * Each method is a vi.fn().
+ */
+export const HOOKS_STUB = {
+  on: vi.fn(),
+  once: vi.fn(),
+  off: vi.fn(),
+  callAll: vi.fn(),
+};
+
+/**
+ * Minimal ui.notifications stub for vi.stubGlobal('ui', UI_STUB).
+ */
+export const UI_STUB = Object.freeze({
+  notifications: {
+    info: vi.fn(),
+    warn: vi.fn(),
+    error: vi.fn(),
+  },
+});