fix(frontend): 移除运行时演示数据并接入真实后端状态

backend/app/contracts.py

@@ -993,6 +993,8 @@ class TranscriptionJob(Contract):
 
 
 class IndexStatus(Contract):
+    total_notes: int = 0
+    total_blocks: int = 0
     status: Literal["idle", "queued", "running", "failed"] = "idle"
     pending_jobs: int = 0
     active_job_id: str | None = None

backend/app/routes.py

@@ -120,6 +120,13 @@ from app.services.attachment_service import attachment_path
 router = APIRouter(prefix="/api")
 
 
+@router.get("/permissions/policy", tags=["Permissions"])
+async def get_permission_policy() -> dict[str, str]:
+    from app.agent.permissions import KNOWN_PERMISSIONS
+    return {permission: container.permissions.policy.mode_for(permission).value
+            for permission in sorted(KNOWN_PERMISSIONS)}
+
+
 async def mcp_call_async(operation):
     """Even registry reads can wait on lifecycle locks; keep all MCP work off the event loop."""
     try:

backend/app/services/index_service.py

@@ -126,9 +126,12 @@ async def rebuild(request: IndexRebuildRequest) -> IndexJob:
 
 
 def get_status() -> IndexStatus:
+    counts = repository.stats()
     if _active_job_id is not None:
-        return IndexStatus(status="running", pending_jobs=0, active_job_id=_active_job_id)
+        return IndexStatus(status="running", pending_jobs=0, active_job_id=_active_job_id,
+                           total_notes=counts["notes"], total_blocks=counts["blocks"])
     return IndexStatus(
+        total_notes=counts["notes"], total_blocks=counts["blocks"],
         status="failed" if _last_error else "idle",
         pending_jobs=0,
         last_completed_at=_last_completed_at,