feat(knowledge): support standalone file ingestion and configurable wiki entry

Use neutral knowledge-service labels and sanitize user-facing task errors.

offline-backend-20260512/backend/packages/harness/deerflow/config/system_settings.py

@@ -538,6 +538,7 @@ class SystemSettings(BaseModel):
         default="v1",
         description="v1 opens the ordinary WeKnora experience; v2 opens the DeerFlow assistant knowledge base.",
     )
+    ordinary_knowledge_landing: Literal["wiki", "weknora"] = "wiki"
     model_config = ConfigDict(extra="ignore")
 
 

offline-backend-20260512/backend/packages/harness/deerflow/persistence/assistant_knowledge/store.py

@@ -241,6 +241,8 @@ class AssistantKnowledgeRepository:
     ) -> tuple[str, str]:
         metadata = package.get("source") or {}
         provider = str(metadata.get("provider") or metadata.get("type") or "").strip().casefold()
+        if provider == "file" and metadata.get("digest"):
+            return f"file:{metadata['digest']}", str(metadata.get("filename") or fallback_name)
         if provider == "weknora":
             source_key = str(
                 metadata.get("knowledge_base_id")