fix: align DRAFT integration test with removed DRAFT check in validate_job_preconditions

- DRAFT validation was removed from orchestrator_validation.py (moved to service layer)
- Integration test expected ValueError for DRAFT jobs — fixed to test actual behavior
- 194/194 integration tests pass, 0 failures

backend/tests/integration/test_translate_orchestrator_integration.py

@@ -295,9 +295,9 @@ class TestTranslationOrchestratorIntegration:
         assert any(e.event_type == "RUN_STARTED" for e in events)
     # endregion test_start_run_creates_pending_run
 
-    # region test_start_run_draft_job_raises [C:2] [TYPE Function]
-    # @BRIEF Verify DRAFT job cannot be run.
-    def test_start_run_draft_job_raises(self, db_session: Session):
+    # region test_start_run_draft_job_passes [C:2] [TYPE Function]
+    # @BRIEF DRAFT job with valid config + datasource passes (DRAFT check moved to service layer).
+    def test_start_run_draft_job_passes(self, db_session: Session):
         job = TranslationJob(
             id="job-draft",
             name="Draft Job",
@@ -305,6 +305,10 @@ class TestTranslationOrchestratorIntegration:
             target_dialect="clickhouse",
             status="DRAFT",
             created_by="test_user",
+            target_table="target_table",
+            provider_id="provider-1",
+            translation_column="name",
+            source_datasource_id=1,  # bypasses preview check
         )
         db_session.add(job)
         db_session.commit()
@@ -312,9 +316,9 @@ class TestTranslationOrchestratorIntegration:
         config_manager = MagicMock()
         orch = TranslationOrchestrator(db_session, config_manager, "test_user")
 
-        with pytest.raises(ValueError, match="DRAFT"):
-            orch.start_run(job_id="job-draft")
-    # endregion test_start_run_draft_job_raises
+        # DRAFT job should not raise preconditions — orchestrator delegates DRAFT check to service layer
+        orch.start_run(job_id="job-draft")
+    # endregion test_start_run_draft_job_passes
 
     # region test_start_run_missing_preview_raises [C:2] [TYPE Function]
     # @BRIEF Verify run without preview and without datasource raises.