M31: align RAG verification with provider contract

backend/app/services/knowledge/ragcore.py

@@ -163,7 +163,7 @@ class RAGcoreKnowledgeProvider:
                     else:
                         detail += (
                             f" {verified_document_count}/{len(documents)} managed sources have "
-                            "an active published version with the expected content hash."
+                            "an exact active published document in the configured space."
                         )
         except (httpx.HTTPError, ValueError) as exc:
             available = False
@@ -177,7 +177,9 @@ class RAGcoreKnowledgeProvider:
             collection=self._settings.ragcore_collection,
             # RAGcore deliberately has no browse/count endpoint. Fleet Ops instead
             # verifies each managed source through its exact identity lookup and only
-            # counts an active published version whose content hash still matches.
+            # counts an active document with a published active version. RAGcore's
+            # content_sha256 describes its canonical parsed artifact, not the uploaded
+            # source bytes, so comparing it with Fleet Ops's source hash would be false.
             document_count=verified_document_count,
             source_document_count=len(documents),
             reported_synced_document_count=None,
@@ -224,7 +226,6 @@ class RAGcoreKnowledgeProvider:
                 and item.get("status") == "active"
                 and isinstance(active_version, dict)
                 and active_version.get("status") == "published"
-                and active_version.get("content_sha256") == document.content_hash
             )
 
         try: