Fix LLM validation and dashboard health hot paths

backend/src/api/routes/health.py

@@ -5,27 +5,58 @@
 # @LAYER: UI/API
 # @RELATION: DEPENDS_ON -> health_service
 
-from fastapi import APIRouter, Depends, Query
+from fastapi import APIRouter, Depends, Query, HTTPException, status
 from typing import List, Optional
 from sqlalchemy.orm import Session
 from ...core.database import get_db
 from ...services.health_service import HealthService
 from ...schemas.health import HealthSummaryResponse
-from ...dependencies import has_permission
+from ...dependencies import has_permission, get_config_manager, get_task_manager
 
 router = APIRouter(prefix="/api/health", tags=["Health"])
 
+# [DEF:get_health_summary:Function]
+# @PURPOSE: Get aggregated health status for all dashboards.
+# @PRE: Caller has read permission for dashboard health view.
+# @POST: Returns HealthSummaryResponse.
+# @RELATION: CALLS -> backend.src.services.health_service.HealthService
 @router.get("/summary", response_model=HealthSummaryResponse)
 async def get_health_summary(
     environment_id: Optional[str] = Query(None),
     db: Session = Depends(get_db),
+    config_manager = Depends(get_config_manager),
     _ = Depends(has_permission("plugin:migration", "READ"))
 ):
     """
     @PURPOSE: Get aggregated health status for all dashboards.
     @POST: Returns HealthSummaryResponse
     """
-    service = HealthService(db)
+    service = HealthService(db, config_manager=config_manager)
     return await service.get_health_summary(environment_id=environment_id)
+# [/DEF:get_health_summary:Function]
 
-# [/DEF:health_router:Module]
+
+# [DEF:delete_health_report:Function]
+# @PURPOSE: Delete one persisted dashboard validation report from health summary.
+# @PRE: Caller has write permission for tasks/report maintenance.
+# @POST: Validation record is removed; linked task/logs are cleaned when available.
+# @RELATION: CALLS -> backend.src.services.health_service.HealthService
+@router.delete("/summary/{record_id}", status_code=status.HTTP_204_NO_CONTENT)
+async def delete_health_report(
+    record_id: str,
+    db: Session = Depends(get_db),
+    config_manager = Depends(get_config_manager),
+    task_manager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "WRITE")),
+):
+    """
+    @PURPOSE: Delete a persisted dashboard validation report from health summary.
+    @POST: Validation record is removed; linked task/logs are deleted when present.
+    """
+    service = HealthService(db, config_manager=config_manager)
+    if not service.delete_validation_report(record_id, task_manager=task_manager):
+        raise HTTPException(status_code=404, detail="Health report not found")
+    return
+# [/DEF:delete_health_report:Function]
+
+# [/DEF:health_router:Module]