feat(site): add util reference pipeline (#537)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/store/src/html/controllers/snapshot-controller.ts

@@ -25,7 +25,18 @@ export class SnapshotController<T extends object, R = T> implements ReactiveCont
   #cached: R | undefined;
   #unsubscribe = noop;
 
+  /**
+   * @label Without Selector
+   * @param host - The host element that owns this controller.
+   * @param state - The State container to subscribe to.
+   */
   constructor(host: ReactiveControllerHost, state: State<T>);
+  /**
+   * @label With Selector
+   * @param host - The host element that owns this controller.
+   * @param state - The State container to subscribe to.
+   * @param selector - Derives a value from the state.
+   */
   constructor(host: ReactiveControllerHost, state: State<T>, selector: Selector<T, R>);
   constructor(host: ReactiveControllerHost, state: State<T>, selector?: Selector<T, R>) {
     this.#host = host;

packages/store/src/html/controllers/store-controller.ts

@@ -45,7 +45,18 @@ export class StoreController<Store extends AnyStore, Result = Store> implements
 
   #snapshot: SnapshotController<object, Result> | null = null;
 
+  /**
+   * @label Without Selector
+   * @param host - The host element that owns this controller.
+   * @param source - Store instance or context to resolve the store from.
+   */
   constructor(host: StoreControllerHost, source: StoreSource<Store>);
+  /**
+   * @label With Selector
+   * @param host - The host element that owns this controller.
+   * @param source - Store instance or context to resolve the store from.
+   * @param selector - Derives a value from the store state.
+   */
   constructor(
     host: StoreControllerHost,
     source: StoreSource<Store>,

packages/store/src/html/controllers/subscription-controller.ts

@@ -42,6 +42,11 @@ export class SubscriptionController<Store extends AnyStore, Value> implements Re
 
   #unsubscribe = noop;
 
+  /**
+   * @param host - The host element that owns this controller.
+   * @param source - Store instance or context to resolve the store from.
+   * @param config - Subscription and value extraction configuration.
+   */
   constructor(
     host: SubscriptionControllerHost,
     source: StoreSource<Store>,