feat: add knowledge retrieval service

backend/apps/knowledge/api.py

@@ -9,8 +9,10 @@ from apps.knowledge.schemas import (
     KnowledgeDocumentOut,
     KnowledgeItemIn,
     KnowledgeItemOut,
+    KnowledgeSearchIn,
+    KnowledgeSearchResultOut,
 )
-from apps.knowledge.services import ingest_document_text, rebuild_item_chunks
+from apps.knowledge.services import ingest_document_text, rebuild_item_chunks, retrieve_knowledge
 
 router = Router(tags=["knowledge"])
 
@@ -81,3 +83,13 @@ def create_knowledge_document(request, payload: KnowledgeDocumentIn):
         content=payload.content,
         operator=request.user if request.user.is_authenticated else None,
     )
+
+
+@router.post("/search", response=list[KnowledgeSearchResultOut])
+def search_knowledge(request, payload: KnowledgeSearchIn):
+    require_permission(request, "knowledge.view")
+    return retrieve_knowledge(
+        query=payload.query,
+        knowledge_base_id=payload.knowledge_base_id,
+        limit=min(max(payload.limit, 1), 20),
+    )