feat(memory-v2): close Phase A with auto-review, product events, and H5 recall UI.

Add candidate auto-review pipeline, shadow audit tooling, admin metrics page,
and user-visible memory recall hints in chat with phase-a readiness checks.

Co-authored-by: Cursor <cursoragent@cursor.com>

memory-v2.mjs

@@ -310,12 +310,15 @@ export function createMemoryV2({
     if (!backend?.write) return skippedWriteResult('no_backend');
     try {
       const result = await backend.write(input);
+      let personalMemory = null;
       if (shadowPipeline?.config?.enabled) {
-        void Promise.resolve(shadowPipeline.observeWrite(input)).catch((err) => {
+        try {
+          personalMemory = await shadowPipeline.observeWrite(input);
+        } catch (err) {
           logger?.warn?.(
             `[memory-v2] personal shadow pipeline skipped: ${err instanceof Error ? err.message : err}`,
           );
-        });
+        }
       }
       return {
         ok: true,
@@ -326,6 +329,7 @@ export function createMemoryV2({
         saved: Number(result?.saved ?? 0),
         analyzed: Number(result?.analyzed ?? 0),
         memories: Number(result?.memories ?? 0),
+        personalMemory,
       };
     } catch (err) {
       return failOpen('write', err, {