fix(auth): clean up rename and null-owner ownership (#4340)

app.py

@@ -527,6 +527,7 @@ memory_vector     = components.get("memory_vector")
 upload_handler    = components["upload_handler"]
 app.state.upload_handler = upload_handler
 personal_docs_mgr = components["personal_docs_manager"]
+app.state.personal_docs_manager = personal_docs_mgr
 api_key_manager   = components["api_key_manager"]
 preset_manager    = components["preset_manager"]
 chat_processor    = components["chat_processor"]

core/auth.py

@@ -573,16 +573,20 @@ class AuthManager:
             return None
         return self.create_session_trusted(username)
 
-    def create_session_trusted(self, username: str) -> str:
+    def create_session_trusted(self, username: str) -> Optional[str]:
         """Issue a session token for an already-verified user.
         Call only after verify_password (and TOTP if enabled) have passed."""
         username = username.strip().lower()
         token = secrets.token_hex(32)
-        with self._sessions_lock:
-            self._sessions[token] = {
-                "username": username,
-                "expiry": time.time() + TOKEN_TTL,
-            }
+        with self._config_lock:
+            if username not in self.users:
+                logger.warning("Refused to issue session for missing user '%s'", username)
+                return None
+            with self._sessions_lock:
+                self._sessions[token] = {
+                    "username": username,
+                    "expiry": time.time() + TOKEN_TTL,
+                }
         self._save_sessions()
         return token
 

routes/auth_routes.py

@@ -144,6 +144,8 @@ def setup_auth_routes(auth_manager: AuthManager) -> APIRouter:
                 raise HTTPException(401, "Invalid 2FA code")
         # All checks passed — create session (password already verified above)
         token = await asyncio.to_thread(auth_manager.create_session_trusted, username)
+        if not token:
+            raise HTTPException(401, "Invalid credentials")
         cookie_kwargs = dict(
             key=SESSION_COOKIE,
             value=token,
@@ -432,6 +434,23 @@ def setup_auth_routes(auth_manager: AuthManager) -> APIRouter:
         except Exception as e:
             logger.warning("Failed to rename upload owner references %s -> %s: %s", old_username, new_username, e)
 
+        # direct personal RAG uploads live in per-owner directories and the
+        # vector metadata also carries the username used for owner-filtered
+        # search. Keep both in sync with the auth rename.
+        try:
+            from routes.personal_routes import rename_personal_upload_owner
+            personal_docs_manager = getattr(request.app.state, "personal_docs_manager", None)
+            if personal_docs_manager is not None:
+                rag_manager = getattr(personal_docs_manager, "rag_manager", None)
+                rename_personal_upload_owner(
+                    old_username,
+                    new_username,
+                    personal_docs_manager=personal_docs_manager,
+                    rag_manager=rag_manager,
+                )
+        except Exception as e:
+            logger.warning("Failed to rename personal RAG upload owner references %s -> %s: %s", old_username, new_username, e)
+
         # skills: SKILL.md frontmatter carries owner: <username>; the usage
         # sidecar (_usage.json) keys entries as owner::skill-name. Both must
         # be updated or the renamed user's Skills panel goes empty.

routes/document_helpers.py

@@ -102,8 +102,11 @@ def _owner_session_filter(q, user):
 
     The owner backfill runs in init_db before the app serves requests, so
     by the time this filter is live there are no NULL-owner rows to leak;
-    we therefore match the owner strictly."""
-    if user is None:
+    we therefore match the owner strictly for authenticated callers."""
+    if not user:
+        from src.auth_helpers import _auth_disabled
+        if user == "" or _auth_disabled():
+            return q
         return q.filter(False)
     return q.filter(Document.owner == user)
 

routes/personal_routes.py

@@ -2,8 +2,9 @@
 """Routes for personal documents management."""
 import os
 import logging
+import shutil
 import uuid
-from typing import List, Tuple
+from typing import Any, Dict, List, Tuple
 from fastapi import APIRouter, HTTPException, Query, Request, UploadFile, File, Depends
 from src.request_models import DirectoryRequest
 from core.constants import BASE_DIR, PERSONAL_DIR, PERSONAL_UPLOADS_DIR
@@ -18,14 +19,15 @@ UPLOADS_DIR = PERSONAL_UPLOADS_DIR
 logger = logging.getLogger(__name__)
 
 
-def _personal_upload_dir_for_owner(owner: str | None) -> str:
+def _personal_upload_dir_for_owner(owner: str | None, *, create: bool = True) -> str:
     """Return the per-owner upload directory used for direct RAG uploads."""
     owner_segment = secure_filename((owner or "local").strip())[:80] or "local"
     upload_dir = os.path.abspath(os.path.join(UPLOADS_DIR, owner_segment))
     base_abs = os.path.abspath(UPLOADS_DIR)
     if os.path.commonpath([upload_dir, base_abs]) != base_abs:
         raise ValueError("Unsafe upload owner path")
-    os.makedirs(upload_dir, exist_ok=True)
+    if create:
+        os.makedirs(upload_dir, exist_ok=True)
     return upload_dir
 
 
@@ -44,6 +46,87 @@ def _unique_personal_upload_path(upload_dir: str, original_name: str | None) ->
         raise ValueError("Unsafe upload filename")
     return file_path, filename, safe_name
 
+
+def _unique_existing_target(path: str) -> str:
+    """Return a non-existing sibling path for rename collision handling."""
+    if not os.path.exists(path):
+        return path
+    stem, ext = os.path.splitext(path)
+    while True:
+        candidate = f"{stem}-{uuid.uuid4().hex[:10]}{ext}"
+        if not os.path.exists(candidate):
+            return candidate
+
+
+def _remove_empty_tree(path: str) -> None:
+    """Best-effort removal of empty directories under ``path``."""
+    if not os.path.isdir(path):
+        return
+    for root, dirs, _files in os.walk(path, topdown=False):
+        for dirname in dirs:
+            candidate = os.path.join(root, dirname)
+            try:
+                os.rmdir(candidate)
+            except OSError:
+                pass
+    try:
+        os.rmdir(path)
+    except OSError:
+        pass
+
+
+def rename_personal_upload_owner(
+    old_owner: str,
+    new_owner: str,
+    *,
+    personal_docs_manager: Any = None,
+    rag_manager: Any = None,
+) -> Dict[str, Any]:
+    """Move direct personal uploads and rewrite RAG owner metadata on user rename."""
+    old_dir = _personal_upload_dir_for_owner(old_owner, create=False)
+    new_dir = _personal_upload_dir_for_owner(new_owner, create=False)
+    path_map: Dict[str, str] = {}
+    moved_files = 0
+
+    if os.path.isdir(old_dir) and old_dir != new_dir:
+        os.makedirs(new_dir, exist_ok=True)
+        for root, _dirs, files in os.walk(old_dir):
+            rel_root = os.path.relpath(root, old_dir)
+            target_root = new_dir if rel_root == "." else os.path.join(new_dir, rel_root)
+            os.makedirs(target_root, exist_ok=True)
+            for filename in files:
+                source = os.path.abspath(os.path.join(root, filename))
+                target = _unique_existing_target(os.path.abspath(os.path.join(target_root, filename)))
+                shutil.move(source, target)
+                path_map[source] = target
+                moved_files += 1
+        _remove_empty_tree(old_dir)
+
+    if personal_docs_manager is not None:
+        rename_directory = getattr(personal_docs_manager, "rename_directory", None)
+        if callable(rename_directory):
+            rename_directory(old_dir, new_dir, path_map=path_map)
+
+    rag_result = None
+    if rag_manager is not None:
+        rename_owner = getattr(rag_manager, "rename_owner", None)
+        if callable(rename_owner):
+            rag_result = rename_owner(
+                old_owner,
+                new_owner,
+                path_map=path_map,
+                path_prefixes=[(old_dir, new_dir)],
+            )
+
+    return {
+        "old_dir": old_dir,
+        "new_dir": new_dir,
+        "moved_files": moved_files,
+        "path_map": path_map,
+        "rag_result": rag_result,
+    }
+
+
 def setup_personal_routes(personal_docs_manager, rag_manager, rag_available):
     """
     Setup personal documents related routes.

routes/session_routes.py

@@ -1004,6 +1004,7 @@ def setup_session_routes(session_manager: SessionManager, config: dict, webhook_
         """
         from src.llm_core import llm_call
         user = effective_user(request)
+        single_user_mode = not user and _auth_disabled()
         user_sessions = session_manager.get_sessions_for_user(user)
 
         # Delete empty and throwaway sessions before sorting
@@ -1022,7 +1023,12 @@ def setup_session_routes(session_manager: SessionManager, config: dict, webhook_
         }
         _THROWAWAY_MAX_MESSAGES = 4  # only delete if <= this many messages
         try:
-            rows = db.query(DbSession).filter(DbSession.archived == False, DbSession.owner == user).limit(2000).all()
+            rows_q = db.query(DbSession).filter(DbSession.archived == False)
+            if user:
+                rows_q = rows_q.filter(DbSession.owner == user)
+            elif not single_user_mode:
+                rows_q = rows_q.filter(DbSession.owner == user)
+            rows = rows_q.limit(2000).all()
             folder_map = {r.id: r.folder for r in rows}
             # Precompute per-session message counts in TWO aggregate queries
             # instead of 1–3 queries PER session — with many chats the per-row
@@ -1242,7 +1248,12 @@ def setup_session_routes(session_manager: SessionManager, config: dict, webhook_
         db = SessionLocal()
         try:
             for sid, folder_name in assignments.items():
-                db_session = db.query(DbSession).filter(DbSession.id == sid, DbSession.owner == user).first()
+                db_session_q = db.query(DbSession).filter(DbSession.id == sid)
+                if user:
+                    db_session_q = db_session_q.filter(DbSession.owner == user)
+                elif not single_user_mode:
+                    db_session_q = db_session_q.filter(DbSession.owner == user)
+                db_session = db_session_q.first()
                 if db_session:
                     db_session.folder = folder_name
                     db_session.updated_at = datetime.utcnow()

src/personal_docs.py

@@ -322,6 +322,47 @@ class PersonalDocsManager:
         else:
             logger.info(f"Directory not in index: {directory}")
 
+    def rename_directory(self, old_directory: str, new_directory: str, *, path_map: Dict[str, str] = None):
+        """Rewrite tracked directory and excluded-file paths after an owner rename."""
+        old_directory = os.path.abspath(old_directory)
+        new_directory = os.path.abspath(new_directory)
+        path_map = {os.path.abspath(k): os.path.abspath(v) for k, v in (path_map or {}).items()}
+
+        def rewrite(path: str) -> str:
+            abs_path = os.path.abspath(path)
+            mapped = path_map.get(abs_path)
+            if mapped:
+                return mapped
+            if abs_path == old_directory:
+                return new_directory
+            if abs_path.startswith(old_directory + os.sep):
+                return new_directory + abs_path[len(old_directory):]
+            return abs_path
+
+        changed_dirs = False
+        rewritten_dirs = []
+        for directory in self.indexed_directories:
+            rewritten = rewrite(directory)
+            changed_dirs = changed_dirs or rewritten != os.path.abspath(directory)
+            if rewritten not in rewritten_dirs:
+                rewritten_dirs.append(rewritten)
+        if changed_dirs:
+            self.indexed_directories = rewritten_dirs
+            self.save_directories()
+
+        changed_excluded = False
+        rewritten_excluded = set()
+        for path in self.excluded_files:
+            rewritten = rewrite(path)
+            changed_excluded = changed_excluded or rewritten != os.path.abspath(path)
+            rewritten_excluded.add(rewritten)
+        if changed_excluded:
+            self.excluded_files = rewritten_excluded
+            self._save_excluded()
+
+        if changed_dirs or changed_excluded:
+            self.refresh_index()
+
     def get_indexed_directories(self):
         """Get the list of all indexed directories."""
         return self.indexed_directories.copy()

src/rag_vector.py

@@ -50,6 +50,23 @@ def _generate_doc_id(text: str, owner: str = "") -> str:
     return f"doc_{hashlib.sha256(key.encode('utf-8')).hexdigest()[:16]}"
 
 
+def _rewrite_owner_path(value: str, path_map: Dict[str, str], path_prefixes: List[tuple]) -> str:
+    if not isinstance(value, str) or not value:
+        return value
+    abs_value = os.path.abspath(value)
+    mapped = path_map.get(abs_value)
+    if mapped:
+        return mapped
+    for old_prefix, new_prefix in path_prefixes:
+        old_abs = os.path.abspath(old_prefix)
+        new_abs = os.path.abspath(new_prefix)
+        if abs_value == old_abs:
+            return new_abs
+        if abs_value.startswith(old_abs + os.sep):
+            return new_abs + abs_value[len(old_abs):]
+    return value
+
+
 class VectorRAG:
     """RAG system using ChromaDB vector storage with hybrid search."""
 
@@ -250,6 +267,75 @@ class VectorRAG:
             "failed_count": len(docs) - len(valid),
         }
 
+    def rename_owner(
+        self,
+        old_owner: str,
+        new_owner: str,
+        *,
+        path_map: Optional[Dict[str, str]] = None,
+        path_prefixes: Optional[List[tuple]] = None,
+    ) -> Dict[str, Any]:
+        """Rewrite existing RAG metadata after an auth username rename."""
+        if not self.healthy:
+            return {"success": False, "updated_count": 0, "message": "Collection not initialized"}
+
+        old_owner = (old_owner or "").strip().lower()
+        new_owner = (new_owner or "").strip().lower()
+        if not old_owner or not new_owner or old_owner == new_owner:
+            return {"success": True, "updated_count": 0, "message": "No owner rename needed"}
+
+        path_map = {os.path.abspath(k): os.path.abspath(v) for k, v in (path_map or {}).items()}
+        path_prefixes = path_prefixes or []
+        updated_ids = set()
+        failed_count = 0
+
+        for lane_name, collection in self._collections_for_delete():
+            try:
+                results = collection.get(
+                    where={"owner": old_owner},
+                    include=["metadatas"],
+                )
+            except Exception as e:
+                logger.warning("rename_owner metadata scan failed in %s lane: %s", lane_name, e)
+                failed_count += 1
+                continue
+
+            ids = results.get("ids") or []
+            metadatas = results.get("metadatas") or []
+            if not ids:
+                continue
+
+            new_metas = []
+            selected_ids = []
+            for doc_id, meta in zip(ids, metadatas):
+                if not isinstance(meta, dict):
+                    continue
+                next_meta = dict(meta)
+                if str(next_meta.get("owner", "")).strip().lower() == old_owner:
+                    next_meta["owner"] = new_owner
+                for key in ("source", "directory"):
+                    next_meta[key] = _rewrite_owner_path(next_meta.get(key), path_map, path_prefixes)
+                selected_ids.append(doc_id)
+                new_metas.append(next_meta)
+
+            if not selected_ids:
+                continue
+
+            try:
+                collection.update(ids=selected_ids, metadatas=new_metas)
+                updated_ids.update(selected_ids)
+            except Exception as e:
+                logger.warning("rename_owner metadata update failed in %s lane: %s", lane_name, e)
+                failed_count += len(selected_ids)
+
+        success = failed_count == 0
+        return {
+            "success": success,
+            "updated_count": len(updated_ids),
+            "failed_count": failed_count,
+            "message": f"Updated {len(updated_ids)} RAG chunk(s)",
+        }
+
     # ------------------------------------------------------------------
     # Search — hybrid: vector similarity + keyword overlap
     # ------------------------------------------------------------------

tests/test_auth_session_revocation.py

@@ -80,6 +80,16 @@ def test_password_change_allows_new_password_and_blocks_old_password(tmp_path):
     assert mgr.create_session("alice", "new-password") is not None
 
 
+def test_create_session_trusted_rejects_username_renamed_after_verification(tmp_path):
+    mgr = _make_manager(tmp_path)
+    assert mgr.create_user("admin", "admin-password", is_admin=True)
+
+    assert mgr.verify_password("alice", "old-password") is True
+    assert mgr.rename_user("alice", "alice2", "admin") is True
+
+    assert mgr.create_session_trusted("alice") is None
+
+
 def _change_password_endpoint(auth_manager):
     sys.modules.pop("routes.auth_routes", None)
     _real_core_package()
@@ -92,6 +102,39 @@ def _change_password_endpoint(auth_manager):
     raise AssertionError("change-password route not found")
 
 
+def _login_endpoint(auth_manager):
+    sys.modules.pop("routes.auth_routes", None)
+    _real_core_package()
+    from routes.auth_routes import LoginRequest, setup_auth_routes
+
+    router = setup_auth_routes(auth_manager)
+    for route in router.routes:
+        if getattr(route, "path", None) == "/api/auth/login":
+            return route.endpoint, LoginRequest
+    raise AssertionError("login route not found")
+
+
+def test_login_route_does_not_set_cookie_when_trusted_session_rejects_stale_user(monkeypatch):
+    auth = MagicMock()
+    auth.verify_password.return_value = True
+    auth.totp_enabled.return_value = False
+    auth.create_session_trusted.return_value = None
+    endpoint, LoginRequest = _login_endpoint(auth)
+    monkeypatch.setattr(
+        "routes.auth_routes.asyncio.to_thread",
+        lambda fn, *args, **kwargs: _immediate_to_thread(fn, *args, **kwargs),
+    )
+    request = SimpleNamespace(client=SimpleNamespace(host="127.0.0.1"))
+    response = MagicMock()
+    body = LoginRequest(username="alice", password="old-password")
+
+    with pytest.raises(HTTPException) as exc:
+        asyncio.run(endpoint(body=body, request=request, response=response))
+
+    assert exc.value.status_code == 401
+    response.set_cookie.assert_not_called()
+
+
 def test_change_password_route_revokes_other_sessions_after_success(monkeypatch):
     auth = MagicMock()
     auth.get_username_for_token.return_value = "alice"

tests/test_document_session_owner_scope.py

@@ -25,6 +25,7 @@ import routes.document_routes as droutes
 from core.database import Document
 from core.database import Session as DbSession
 from routes.document_helpers import DocumentPatch
+from routes.document_helpers import _owner_session_filter
 
 _TMPDB = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
 _ENGINE = create_engine(
@@ -141,3 +142,18 @@ async def test_list_documents_filters_foreign_docs_in_visible_session():
         assert bob_doc not in ids
     finally:
         droutes.SessionLocal = previous_session_local
+
+
+def test_owner_session_filter_noops_for_auth_disabled_single_user(monkeypatch):
+    monkeypatch.setenv("AUTH_ENABLED", "false")
+    previous_session_local = _bind_test_db()
+    try:
+        _alice_session, _bob_session, alice_doc, _bob_doc, _legacy_doc = _seed()
+        db = _TS()
+        try:
+            q = db.query(Document).filter(Document.id == alice_doc)
+            assert _owner_session_filter(q, None).first().id == alice_doc
+        finally:
+            db.close()
+    finally:
+        droutes.SessionLocal = previous_session_local

tests/test_personal_upload_isolation.py

@@ -1,5 +1,6 @@
 import os
 from pathlib import Path
+from types import SimpleNamespace
 
 from routes import personal_routes
 
@@ -42,3 +43,44 @@ def test_personal_upload_paths_stay_under_upload_root(tmp_path, monkeypatch):
     assert os.path.commonpath([file_path, upload_dir]) == upload_dir
     assert Path(file_path).name == stored_name
     assert display_name == "env"
+
+
+def test_rename_personal_upload_owner_moves_files_and_rewrites_rag(tmp_path, monkeypatch):
+    monkeypatch.setattr(personal_routes, "UPLOADS_DIR", str(tmp_path))
+
+    old_dir = Path(personal_routes._personal_upload_dir_for_owner("alice"))
+    old_file = old_dir / "note.txt"
+    old_file.write_text("alice private RAG note", encoding="utf-8")
+
+    manager_calls = []
+    rag_calls = []
+    manager = SimpleNamespace(
+        rename_directory=lambda old, new, path_map=None: manager_calls.append((old, new, dict(path_map or {}))),
+    )
+    rag = SimpleNamespace(
+        rename_owner=lambda old, new, path_map=None, path_prefixes=None: rag_calls.append(
+            (old, new, dict(path_map or {}), list(path_prefixes or []))
+        ) or {"success": True, "updated_count": 1},
+    )
+
+    result = personal_routes.rename_personal_upload_owner(
+        "alice",
+        "alice2",
+        personal_docs_manager=manager,
+        rag_manager=rag,
+    )
+
+    new_dir = Path(personal_routes._personal_upload_dir_for_owner("alice2"))
+    new_file = new_dir / "note.txt"
+    assert old_file.exists() is False
+    assert new_file.read_text(encoding="utf-8") == "alice private RAG note"
+    assert result["moved_files"] == 1
+    assert manager_calls == [(str(old_dir), str(new_dir), {str(old_file): str(new_file)})]
+    assert rag_calls == [
+        (
+            "alice",
+            "alice2",
+            {str(old_file): str(new_file)},
+            [(str(old_dir), str(new_dir))],
+        )
+    ]

tests/test_rag_vector_rename_owner.py

@@ -0,0 +1,81 @@
+from src.rag_vector import VectorRAG
+
+
+class _FakeCollection:
+    def __init__(self, docs):
+        self._docs = {
+            doc_id: {"document": document, "metadata": dict(metadata)}
+            for doc_id, document, metadata in docs
+        }
+
+    def count(self):
+        return len(self._docs)
+
+    def get(self, where=None, include=None):
+        rows = []
+        for doc_id, row in self._docs.items():
+            metadata = row["metadata"]
+            if where and any(metadata.get(key) != value for key, value in where.items()):
+                continue
+            rows.append((doc_id, row))
+        return {
+            "ids": [doc_id for doc_id, _row in rows],
+            "documents": [row["document"] for _doc_id, row in rows],
+            "metadatas": [row["metadata"] for _doc_id, row in rows],
+        }
+
+    def update(self, ids, metadatas):
+        for doc_id, metadata in zip(ids, metadatas):
+            self._docs[doc_id]["metadata"] = dict(metadata)
+
+
+def _store(collection):
+    store = VectorRAG.__new__(VectorRAG)
+    store._collection = collection
+    store._lanes = []
+    store._healthy = True
+    return store
+
+
+def test_rename_owner_updates_metadata_used_by_owner_filtered_search(tmp_path):
+    old_dir = tmp_path / "alice"
+    new_dir = tmp_path / "alice2"
+    old_file = old_dir / "note.txt"
+    new_file = new_dir / "note.txt"
+    collection = _FakeCollection([
+        (
+            "doc-old",
+            "private vector note",
+            {
+                "owner": "alice",
+                "source": str(old_file),
+                "directory": str(old_dir),
+            },
+        ),
+        (
+            "doc-other",
+            "other vector note",
+            {
+                "owner": "bob",
+                "source": str(tmp_path / "bob" / "note.txt"),
+            },
+        ),
+    ])
+    store = _store(collection)
+
+    result = store.rename_owner(
+        "alice",
+        "alice2",
+        path_map={str(old_file): str(new_file)},
+        path_prefixes=[(str(old_dir), str(new_dir))],
+    )
+
+    assert result["success"] is True
+    assert result["updated_count"] == 1
+    assert store._keyword_search_fallback("private", k=10, owner="alice") == []
+    renamed = store._keyword_search_fallback("private", k=10, owner="alice2")
+    assert [row["id"] for row in renamed] == ["doc-old"]
+    assert renamed[0]["metadata"]["owner"] == "alice2"
+    assert renamed[0]["metadata"]["source"] == str(new_file)
+    assert renamed[0]["metadata"]["directory"] == str(new_dir)
+    assert store._keyword_search_fallback("other", k=10, owner="bob")[0]["id"] == "doc-other"

tests/test_rename_user_owner_sync.py

@@ -70,12 +70,20 @@ def rename_endpoint(monkeypatch, tmp_path):
     return _route(ar.setup_auth_routes(am), "rename_user"), am, tmp_path
 
 
-def _request(tmp_path, session_manager=None, token="t", research_handler=None, upload_handler=None):
+def _request(
+    tmp_path,
+    session_manager=None,
+    token="t",
+    research_handler=None,
+    upload_handler=None,
+    personal_docs_manager=None,
+):
     state = SimpleNamespace(
         invalidate_token_cache=lambda: None,
         session_manager=session_manager,
         research_handler=research_handler,
         upload_handler=upload_handler,
+        personal_docs_manager=personal_docs_manager,
     )
     return SimpleNamespace(
         cookies={"odysseus_session": token},
@@ -467,6 +475,52 @@ def test_rename_updates_upload_metadata_owner(rename_endpoint):
     assert handler.resolve_upload(upload_id, owner="alice") is None
 
 
+def test_rename_updates_personal_rag_upload_owner(rename_endpoint, monkeypatch):
+    endpoint, _am, tmp_path = rename_endpoint
+    from routes import personal_routes
+
+    monkeypatch.setattr(personal_routes, "UPLOADS_DIR", str(tmp_path / "personal_uploads"))
+    old_dir = Path(personal_routes._personal_upload_dir_for_owner("alice"))
+    old_file = old_dir / "note.txt"
+    old_file.write_text("private RAG note", encoding="utf-8")
+
+    manager_calls = []
+    rag_calls = []
+    rag = SimpleNamespace(
+        rename_owner=lambda old, new, path_map=None, path_prefixes=None: rag_calls.append(
+            (old, new, dict(path_map or {}), list(path_prefixes or []))
+        ) or {"success": True, "updated_count": 1},
+    )
+    personal_docs_manager = SimpleNamespace(
+        rag_manager=rag,
+        rename_directory=lambda old, new, path_map=None: manager_calls.append(
+            (old, new, dict(path_map or {}))
+        ),
+    )
+
+    asyncio.run(
+        endpoint(
+            "alice",
+            SimpleNamespace(username="alice2"),
+            _request(tmp_path, personal_docs_manager=personal_docs_manager),
+        )
+    )
+
+    new_dir = Path(personal_routes._personal_upload_dir_for_owner("alice2"))
+    new_file = new_dir / "note.txt"
+    assert old_file.exists() is False
+    assert new_file.read_text(encoding="utf-8") == "private RAG note"
+    assert manager_calls == [(str(old_dir), str(new_dir), {str(old_file): str(new_file)})]
+    assert rag_calls == [
+        (
+            "alice",
+            "alice2",
+            {str(old_file): str(new_file)},
+            [(str(old_dir), str(new_dir))],
+        )
+    ]
+
+
 # ---------------------------------------------------------------------------
 # 5. Skills (SKILL.md frontmatter + _usage.json sidecar)
 # ---------------------------------------------------------------------------

tests/test_session_list_owner_scope.py

@@ -7,6 +7,7 @@ import sys
 import tempfile
 import types
 import uuid
+from datetime import timedelta
 
 import pytest
 from sqlalchemy import create_engine
@@ -14,6 +15,7 @@ from sqlalchemy.orm import sessionmaker
 from sqlalchemy.pool import NullPool
 
 import core.database as cdb
+from core.database import ChatMessage as DbMessage
 from core.database import Session as DbSession
 
 _TMPDB = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
@@ -72,3 +74,60 @@ def test_list_sessions_excludes_other_users_sessions(monkeypatch):
     returned_ids = {s["id"] for s in result}
     assert alice_id in returned_ids
     assert bob_id not in returned_ids
+
+
+def test_auto_sort_skip_llm_cleans_owner_stamped_sessions_when_auth_disabled(monkeypatch):
+    import routes.session_routes as sr
+    from unittest.mock import MagicMock
+
+    _stub_multipart_if_missing(monkeypatch)
+    monkeypatch.setenv("AUTH_ENABLED", "false")
+    monkeypatch.setattr(sr, "SessionLocal", _TS)
+    monkeypatch.setattr(sr, "effective_user", lambda request: None)
+
+    sid = str(uuid.uuid4())
+    old_time = cdb.utcnow_naive() - timedelta(hours=2)
+    db = _TS()
+    try:
+        db.query(DbMessage).delete()
+        db.query(DbSession).delete()
+        db.add(DbSession(
+            id=sid,
+            owner="alice",
+            name="New chat",
+            endpoint_url="http://localhost",
+            model="gpt-4",
+            archived=False,
+            message_count=1,
+            created_at=old_time,
+            updated_at=old_time,
+            last_message_at=old_time,
+            last_accessed=old_time,
+        ))
+        db.add(DbMessage(
+            id="m-" + uuid.uuid4().hex,
+            session_id=sid,
+            role="user",
+            content="hi",
+            timestamp=old_time,
+        ))
+        db.commit()
+    finally:
+        db.close()
+
+    session = MagicMock(id=sid, name="New chat", model="gpt-4", endpoint_url="http://localhost", rag=False, archived=False)
+    sm = MagicMock()
+    sm.get_sessions_for_user.return_value = {sid: session}
+    router = sr.setup_session_routes(sm, {})
+    endpoint = next(r.endpoint for r in router.routes
+                    if getattr(r, "path", "") == "/api/sessions/auto-sort"
+                    and "POST" in getattr(r, "methods", set()))
+
+    result = endpoint(request=MagicMock(), skip_llm=True)
+
+    assert result["deleted_throwaway"] == 1
+    db = _TS()
+    try:
+        assert db.query(DbSession).filter(DbSession.id == sid).first() is None
+    finally:
+        db.close()