bug(vue): useAskableSource enabled option evaluated once at setup — not reactive #268

Summary

useAskableSource in packages/vue/src/useAskableSource.ts reads options.enabled once at component setup time and never re-evaluates it. If a parent component changes enabled from false to true (or vice versa) after mount, the source registration state does not change.

Root cause

export function useAskableSource(id, source, options = {}) {
  const { enabled = true, ...askableOptions } = options;
  // ...
  if (enabled && sourceId) {           // evaluated ONCE at setup
    handle = ctx.registerSource(sourceId, buildProxy());
    registered = true;
  }
  onUnmounted(unregister);
}

There is no watch on enabled, so toggling it at runtime has no effect.

Expected behaviour

enabled should be watchable. When it changes:

• false → true: register the source
• true → false: unregister the source

Fix

watch(
  () => options.enabled ?? true,
  (isEnabled) => {
    if (isEnabled && sourceId && !registered) {
      handle = ctx.registerSource(sourceId, buildProxy());
      registered = true;
    } else if (!isEnabled && registered) {
      unregister();
    }
  },
  { immediate: true }
);

Impact

Any Vue app that conditionally enables/disables a source at runtime will silently fail to register or deregister it.