diff --git a/.changeset/fix-postgres-activity-lifecycle.md b/.changeset/fix-postgres-activity-lifecycle.md
new file mode 100644
index 0000000000..c0864d953d
--- /dev/null
+++ b/.changeset/fix-postgres-activity-lifecycle.md
@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": patch
+---
+
+summary: Restore automatic task lifecycle entries in PostgreSQL activity logs.
+category: fix
+dev: Registers TaskStore activity listeners during PostgreSQL backend initialization.
diff --git a/packages/core/src/__tests__/postgres/activity-log-parity.pg.test.ts b/packages/core/src/__tests__/postgres/activity-log-parity.pg.test.ts
index b3260bf86f..839cbb3bfa 100644
--- a/packages/core/src/__tests__/postgres/activity-log-parity.pg.test.ts
+++ b/packages/core/src/__tests__/postgres/activity-log-parity.pg.test.ts
@@ -23,6 +23,44 @@ pgDescribe("activity log parity (PostgreSQL)", () => {
   afterEach(h.afterEach);
   afterAll(h.afterAll);
 
+  it("records TaskStore lifecycle events after backend initialization", async () => {
+    const store = h.store();
+
+    expect(store.activityListenersWired).toBe(true);
+    for (const event of [
+      "task:created",
+      "task:moved",
+      "task:merged",
+      "task:updated",
+      "task:deleted",
+      "settings:updated",
+    ] as const) {
+      expect(store.listenerCount(event), `${event} activity listener`).toBeGreaterThan(0);
+    }
+
+    const task = await store.createTask({
+      title: "Backend lifecycle activity",
+      description: "Verify PostgreSQL lifecycle activity logging",
+    });
+    await store.moveTask(task.id, "todo", { moveSource: "user" });
+
+    await vi.waitFor(async () => {
+      const entries = await store.getActivityLog({ limit: 10 });
+      expect(entries).toEqual(expect.arrayContaining([
+        expect.objectContaining({
+          type: "task:created",
+          taskId: task.id,
+          taskTitle: task.title,
+        }),
+        expect.objectContaining({
+          type: "task:moved",
+          taskId: task.id,
+          metadata: { from: "triage", to: "todo" },
+        }),
+      ]));
+    });
+  });
+
   it("keeps failed writes best-effort so audit storage cannot break product operations", async () => {
     const layer = h.layer();
     const insert = vi.spyOn(layer.db, "insert").mockImplementation(() => {
diff --git a/packages/core/src/task-store/lifecycle-ops.ts b/packages/core/src/task-store/lifecycle-ops.ts
index 5b5109d9a0..bf1257ca2b 100644
--- a/packages/core/src/task-store/lifecycle-ops.ts
+++ b/packages/core/src/task-store/lifecycle-ops.ts
@@ -47,12 +47,9 @@ export async function initImpl(store: TaskStore): Promise<void> {
     // In backend mode (an AsyncDataLayer was injected), TaskStore skips ALL
     // SQLite construction and the SQLite-specific startup reconciliations
     // (corruption guard, legacy file migration, agent-log file migration,
-    // schema-version re-init, orphaned task-dir reconcile, activity-log
-    // listener wiring that reads from SQLite, etc.). The PostgreSQL schema
-    // baseline is applied by the startup factory before constructing the
-    // store, and the async equivalents of these reconciliations are wired by
-    // the runtime-*-async features. init() in backend mode performs only the
-    // backend-agnostic setup (mkdir, trait-hook registration) above and returns.
+    // schema-version re-init, orphaned task-dir reconcile, etc.). The PostgreSQL
+    // schema baseline is applied by the startup factory before constructing the
+    // store. Backend-safe startup work is performed explicitly in the branch below.
     //
     // When the async layer is ABSENT, the entire block below runs exactly as
     // before — byte-identical to the pre-migration SQLite path.
@@ -81,6 +78,9 @@ export async function initImpl(store: TaskStore): Promise<void> {
       async store API (listTasks/updateTask), so it is PG-safe.
       */
       await adoptLegacyTaskRowsOnOpen(store);
+      // Lifecycle listeners are backend-agnostic: recordActivity() routes their
+      // best-effort writes through the injected PostgreSQL data layer.
+      store.setupActivityLogListeners();
       return;
     }