feat(NFO): add TMDB search fallback with alt_titles support

- New _search_with_fallback() method tries multiple strategies:
  1. Primary query with year filter (de-DE locale)
  2. Alternative titles with ja-JP / en-US locales
  3. English search (en-US)
  4. Search without year constraint
  5. Punctuation-normalized query
- create_nfo() accepts new alt_titles param for Japanese/title fallback
- Better match rate for anime with non-English titles

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tests/unit/test_scheduler_service.py

@@ -117,6 +117,8 @@ class TestStart:
             call_kwargs = mock_sched.add_job.call_args
             assert call_kwargs[1]["id"] == _JOB_ID
             assert isinstance(call_kwargs[1]["trigger"], CronTrigger)
+            assert call_kwargs[1]["misfire_grace_time"] == 3600
+            assert call_kwargs[1]["coalesce"] is True
             mock_sched.start.assert_called_once()
             assert scheduler_service._is_running is True
 
@@ -485,3 +487,75 @@ class TestSingletonHelpers:
         svc = get_scheduler_service()
         assert svc is not None  # fresh instance
 
+
+# ---------------------------------------------------------------------------
+# 12.12  Persistent job store — SQLAlchemyJobStore passed to AsyncIOScheduler
+# ---------------------------------------------------------------------------
+
+class TestPersistentJobStore:
+    @pytest.mark.asyncio
+    async def test_start_creates_scheduler_with_sqlalchemy_jobstore(
+        self, scheduler_service, mock_config_service
+    ):
+        with patch(
+            "src.server.services.scheduler_service.AsyncIOScheduler"
+        ) as MockScheduler:
+            mock_sched = MagicMock()
+            mock_sched.running = False
+            MockScheduler.return_value = mock_sched
+
+            await scheduler_service.start()
+
+            MockScheduler.assert_called_once()
+            call_kwargs = MockScheduler.call_args
+            jobstores = call_kwargs[1]["jobstores"]
+            assert "default" in jobstores
+            # Verify it's a SQLAlchemyJobStore (class check via module name)
+            assert "sqlalchemy" in type(jobstores["default"]).__module__
+
+    @pytest.mark.asyncio
+    async def test_job_options_include_misfire_grace_and_coalesce(
+        self, scheduler_service, mock_config_service
+    ):
+        with patch(
+            "src.server.services.scheduler_service.AsyncIOScheduler"
+        ) as MockScheduler:
+            mock_sched = MagicMock()
+            mock_sched.running = False
+            MockScheduler.return_value = mock_sched
+
+            await scheduler_service.start()
+
+            call_kwargs = mock_sched.add_job.call_args
+            assert call_kwargs[1]["misfire_grace_time"] == 3600
+            assert call_kwargs[1]["coalesce"] is True
+
+
+# ---------------------------------------------------------------------------
+# 12.13  Startup recovery — next run logged after start()
+# ---------------------------------------------------------------------------
+
+class TestStartupRecovery:
+    @pytest.mark.asyncio
+    async def test_start_logs_next_run_time(
+        self, scheduler_service, mock_config_service
+    ):
+        with patch(
+            "src.server.services.scheduler_service.AsyncIOScheduler"
+        ) as MockScheduler:
+            mock_job = MagicMock()
+            next_run_dt = datetime(2026, 5, 25, 3, 0, tzinfo=timezone.utc)
+            mock_job.next_run_time = next_run_dt
+            mock_sched = MagicMock()
+            mock_sched.running = False
+            mock_sched.get_job.return_value = mock_job
+            MockScheduler.return_value = mock_sched
+
+            with patch(
+                "src.server.services.scheduler_service.logger"
+            ) as mock_logger:
+                await scheduler_service.start()
+                # Check that next_run was logged
+                info_calls = [str(c) for c in mock_logger.info.call_args_list]
+                assert any("next_run" in c for c in info_calls)
+