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>

src/contracts/visibility-matrix.js

@@ -15,6 +15,7 @@
  * @typedef {Object} VisibilityMatrix
  * @property {1} _version - Schema version; always 1 for v1.
  * @property {Object.<string, VisibilityState>} matrix - userId → VisibilityState map.
+ * @property {number} [_revision] - Optional revision counter for optimistic concurrency control.
  */
 
 export const VISIBILITY_STATES = Object.freeze([
@@ -50,7 +51,7 @@ export function isValidVisibilityMatrix(data) {
     throw new TypeError("VisibilityMatrix: must be an object");
   }
   const obj = /** @type {Record<string, unknown>} */ (data);
-  const { _version, matrix, ...rest } = obj;
+  const { _version, matrix, _revision, ...rest } = obj;
   if (Object.keys(rest).length > 0) {
     throw new TypeError(`VisibilityMatrix: unknown keys: ${Object.keys(rest).join(", ")}`);
   }
@@ -60,6 +61,9 @@ export function isValidVisibilityMatrix(data) {
   if (matrix === null || typeof matrix !== "object" || Array.isArray(matrix)) {
     throw new TypeError("VisibilityMatrix: matrix must be a plain object");
   }
+  if (_revision !== undefined && (typeof _revision !== "number" || !Number.isFinite(_revision) || _revision < 0)) {
+    throw new TypeError("VisibilityMatrix: _revision must be a finite non-negative number");
+  }
   const matrixObj = /** @type {Record<string, unknown>} */ (matrix);
   for (const [userId, state] of Object.entries(matrixObj)) {
     if (typeof userId !== "string" || userId.length === 0) {