fix(agent): inject Asia/Shanghai time anchor on 0630007 line

Agent replies were reporting UTC time because 0630007-memind never injected
TKMind 当前时间基准 into session memory. Port the time anchor from the
0630004 work only—no miniapp branch changes—and add a 103 rollback script.

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

user-memory-profile.test.mjs

@@ -107,6 +107,22 @@ test('buildSessionMemoryEntries injects stored conversation memories', () => {
   assert.match(entries.at(-1).content, /AI 产品设计/);
 });
 
+test('buildSessionMemoryEntries injects time anchor even without memory store', () => {
+  const sessionPolicy = buildAgentExtensionPolicy({
+    ...DEFAULT_USER_CAPABILITIES,
+    memory_store: false,
+  });
+  const entries = buildSessionMemoryEntries({
+    workingDir: '/tmp/unused',
+    sessionPolicy,
+    now: Date.UTC(2026, 5, 29, 5, 0, 0),
+  });
+  assert.equal(entries.length, 1);
+  assert.equal(entries[0].title, 'TKMind 当前时间基准');
+  assert.match(entries[0].content, /Asia\/Shanghai/);
+  assert.match(entries[0].content, /13:00（中午）/);
+});
+
 test('renderCurrentTimeAnchor formats Shanghai weekday from exact date', () => {
   const text = renderCurrentTimeAnchor({
     now: Date.UTC(2026, 5, 29, 5, 0, 0),