M29: polish recruiter engineering story

backend/app/schemas.py

@@ -164,6 +164,7 @@ class RegisterReturnResult(BaseModel):
     odometer_regression: bool
     quality_issue_ref: str | None
     workflow_event_id: str
+    correlation_id: str
     next_booking_risk: NextBookingRisk | None
 
 

backend/app/services/demo_manifest.py

@@ -143,14 +143,21 @@ def _integrations(db: Session) -> list[DemoIntegrationSummaryOut]:
         ),
         DemoIntegrationSummaryOut(
             key="ragcore",
-            status_code="operational" if knowledge_health.provider == "ragcore" else "demoMode",
-            detail_code="ragcoreDetail",
+            status_code=(
+                "operational"
+                if knowledge_health.provider == "ragcore" and knowledge_health.available
+                else "demoMode"
+                if knowledge_health.provider == "demo" and knowledge_health.available
+                else "unavailable"
+            ),
+            detail_code=(
+                "ragcoreDetail"
+                if knowledge_health.document_count is not None
+                else "ragcoreSourceDetail"
+            ),
             detail_params={
-                "count": (
-                    knowledge_health.document_count
-                    if knowledge_health.document_count is not None
-                    else "unknown"
-                ),
+                "count": knowledge_health.document_count or 0,
+                "source_count": knowledge_health.source_document_count,
                 "collection": knowledge_health.collection,
             },
         ),
@@ -162,7 +169,9 @@ def _integrations(db: Session) -> list[DemoIntegrationSummaryOut]:
             # "operational" -- same evidence rule the integration status page uses.
             status_code="operational" if mcp_hub.state == "operational" else "notConnected",
             detail_code=(
-                "mcpDetailEnabled" if mcp_hub.state == "operational" else "mcpDetailNotConnected"
+                "mcpDetailOperational"
+                if mcp_hub.state == "operational"
+                else "mcpDetailPrepared"
             ),
             detail_params={},
         ),

backend/app/services/returns.py

@@ -328,6 +328,7 @@ def register_vehicle_return(
         "odometer_regression": evaluation.odometer_regression,
         "quality_issue_ref": quality_issue_ref,
         "workflow_event_id": str(event.event_id),
+        "correlation_id": str(correlation_id),
         "next_booking_risk": evaluation.next_booking_risk,
     }
 

backend/tests/test_return.py

@@ -120,6 +120,8 @@ def test_preview_performs_no_writes_and_matches_commit(ops_client):
     assert commit_body["resulting_vehicle_status"] == preview_body["resulting_vehicle_status"]
     assert commit_body["odometer_regression"] == preview_body["odometer_regression"]
     assert commit_body["next_booking_risk"] == preview_body["next_booking_risk"]
+    assert commit_body["correlation_id"]
+    assert len(commit_body["correlation_id"]) == 36
 
 
 def test_preview_detects_odometer_regression(ops_client):