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>

module.js

@@ -8,11 +8,22 @@
  * Initialisation order:
  *   Hooks.once('init')  → register world settings → construct FoundryAdapter
  *                       → StateStore → SocketHandler (queue+drain)
- *   Hooks.once('ready') → VisibilityManager → SocketHandler.setReady()
+ *   Hooks.once('ready') → hydrate StateStore → probe WebRTC
+ *                       → Story 1.4: VisibilityManager → SocketHandler.setReady()
  *                       → NotificationBus → RoleRenderer → RosterStrip
  *                       → DirectorsBoard (lazy, GM only)
  */
 
+import { FoundryAdapter } from './src/foundry/FoundryAdapter.js';
+import { StateStore } from './src/core/StateStore.js';
+import { SocketHandler } from './src/core/SocketHandler.js';
+
+// Module-level references — constructed in init hook, used across hooks
+let adapter;
+let stateStore;
+// eslint-disable-next-line no-unused-vars -- used in Story 1.4 (socketHandler.setReady)
+let socketHandler;
+
 Hooks.once("init", () => {
   console.log("[ScryingPool] init — module loading");
 
@@ -29,11 +40,44 @@ Hooks.once("init", () => {
     },
   });
 
-  // Story 1.3+: register remaining world settings, construct FoundryAdapter, StateStore, SocketHandler
+  // Construct adapter first — needed for settings registration
+  adapter = new FoundryAdapter(game);
+
+  // Story 1.3: register remaining world settings via adapter
+  adapter.settings.register("visibilityMatrix", {
+    scope: "world",
+    config: false,
+    type: Object,
+    default: { _version: 1, matrix: {} },
+  });
+
+  adapter.settings.register("showGMSelfFeed", {
+    scope: "world",
+    config: true,
+    type: Boolean,
+    default: true,
+  });
+
+  // Construct data layer — constructors are side-effect-free
+  stateStore = new StateStore(adapter.settings);
+  socketHandler = new SocketHandler(adapter.socket, adapter.hooks);
 });
 
 Hooks.once("ready", () => {
   console.log("[ScryingPool] ready — module active");
-  // Story 1.3+: construct VisibilityManager, NotificationBus, RoleRenderer, RosterStrip
-  // Story 1.5+: register DirectorsBoard (lazy, GM only)
+
+  // Hydrate StateStore from persisted world setting (AC-6, AC-7)
+  stateStore.init();
+
+  // Probe WebRTC capability and set adapter.webrtc (AC-8)
+  const outcome = FoundryAdapter.probeCapability(game.webrtc);
+  adapter.webrtc = outcome === 'track-disable'
+    ? FoundryAdapter.buildWebRTCSurface(game.webrtc)
+    : null;
+  adapter.settings.set(FoundryAdapter.SETTING_WEBRTC_MODE, outcome).catch(err => {
+    console.error('[ScryingPool] Failed to set webrtcMode setting:', err);
+  });
+
+  // Story 1.4: construct VisibilityManager and call socketHandler.setReady(visibilityManager)
 });
+