feat(admin): surface Memory V2 candidate auto-review in management UI

Clarify active/canary/shadow modes and show auto-review metrics so operators do not need to manually approve every user memory.

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

src/types.ts

@@ -334,6 +334,7 @@ export type MemoryV2RuntimeStatusResponse = {
       enabled?: boolean;
       requestedMode?: string;
       effectiveMode?: string;
+      autoReviewEnabled?: boolean;
       phase?: string;
       injectionEnabled?: boolean;
       persistence?: string;