diff --git a/packages/storage-core/src/storage_core/__init__.py b/packages/storage-core/src/storage_core/__init__.py
index d1771b5..389a35a 100644
--- a/packages/storage-core/src/storage_core/__init__.py
+++ b/packages/storage-core/src/storage_core/__init__.py
@@ -45,12 +45,35 @@ class FileStorage:
         self.initialize()
         result: list[StoredSnapshotInfo] = []
         for path in sorted(self.snapshots_dir.glob("*.json")):
-            snapshot = snapshot_from_json(path.read_bytes())
+            try:
+                payload = orjson.loads(path.read_bytes())
+            except (FileNotFoundError, orjson.JSONDecodeError):
+                continue
+            project_id = payload.get("project_id")
+            snapshot_id = payload.get("snapshot_id")
+            if not isinstance(project_id, str) or not isinstance(snapshot_id, str):
+                continue
+            snapshot_hash = payload.get("snapshot_hash")
             result.append(
                 StoredSnapshotInfo(
-                    project_id=snapshot.project_id,
-                    snapshot_id=snapshot.snapshot_id,
-                    snapshot_hash=snapshot.snapshot_hash,
+                    project_id=project_id,
+                    snapshot_id=snapshot_id,
+                    snapshot_hash=snapshot_hash if isinstance(snapshot_hash, str) else None,
+                    path=path.as_posix(),
+                )
+            )
+        return result
+
+    def list_snapshot_refs(self) -> list[StoredSnapshotInfo]:
+        self.initialize()
+        result: list[StoredSnapshotInfo] = []
+        for path in sorted(self.snapshots_dir.glob("*.json")):
+            project_id = path.stem
+            result.append(
+                StoredSnapshotInfo(
+                    project_id=project_id,
+                    snapshot_id=f"stored.{project_id}",
+                    snapshot_hash=None,
                     path=path.as_posix(),
                 )
             )
@@ -59,6 +82,11 @@ class FileStorage:
     def has_snapshot(self, project_id: str) -> bool:
         return self._snapshot_path(project_id).exists()
 
+    def count_snapshots(self) -> int:
+        if not self.snapshots_dir.exists():
+            return 0
+        return sum(1 for _ in self.snapshots_dir.glob("*.json"))
+
     def write_document(self, collection: str, document_id: str, payload: dict[str, Any]) -> Path:
         directory = self._collection_dir(collection)
         directory.mkdir(parents=True, exist_ok=True)
diff --git a/packages/storage-core/tests/test_storage_core.py b/packages/storage-core/tests/test_storage_core.py
index c65d6ff..ba8d90c 100644
--- a/packages/storage-core/tests/test_storage_core.py
+++ b/packages/storage-core/tests/test_storage_core.py
@@ -17,6 +17,10 @@ def test_file_storage_saves_and_loads_snapshot(tmp_path: Path):
     assert info.project_id == "demo"
     assert restored.snapshot_hash == snapshot.snapshot_hash
     assert storage.list_snapshots()[0].snapshot_id == snapshot.snapshot_id
+    snapshot_ref = storage.list_snapshot_refs()[0]
+    assert snapshot_ref.project_id == "demo"
+    assert snapshot_ref.snapshot_id == "stored.demo"
+    assert snapshot_ref.path.endswith("demo.json")
 
 
 def test_file_storage_generic_documents(tmp_path: Path):
diff --git a/services/api-server/src/api_server/main.py b/services/api-server/src/api_server/main.py
index 7bd5971..ac9f257 100644
--- a/services/api-server/src/api_server/main.py
+++ b/services/api-server/src/api_server/main.py
@@ -2937,7 +2937,7 @@ async def incremental_file(project_id: str, request: IncrementalFileRequest) ->
 
 @app.get("/storage/snapshots", response_model=list[StoredSnapshotInfo])
 async def list_stored_snapshots() -> list[StoredSnapshotInfo]:
-    return _storage.list_snapshots()
+    return _storage.list_snapshot_refs()
 
 
 def _project_snapshot_or_404(project_id: str) -> SirSnapshot:
@@ -6612,7 +6612,7 @@ async def license_state() -> LicenseState:
 async def admin_summary() -> dict:
     return {
         "indexed_projects": len(_snapshots),
-        "stored_snapshots": len(_storage.list_snapshots()),
+        "stored_snapshots": _storage.count_snapshots(),
         "knowledge_records": len(_knowledge.list_records()),
         "knowledge_packs": len(_knowledge.list_packs()),
         "users": len(_collaboration.users),
@@ -7476,12 +7476,12 @@ def _project_setup_response(project_id: str) -> ProjectSetupResponse:
 
 
 def _project_has_stored_snapshot(project_id: str) -> bool:
-    return any(snapshot.project_id == project_id for snapshot in _storage.list_snapshots())
+    return _storage.has_snapshot(project_id)
 
 
 def _project_summaries() -> list[ProjectSummaryResponse]:
     project_ids = set(_project_setup.keys())
-    stored_snapshots = _storage.list_snapshots()
+    stored_snapshots = _storage.list_snapshot_refs()
     project_ids.update(snapshot.project_id for snapshot in stored_snapshots)
     snapshot_project_ids = {snapshot.project_id for snapshot in stored_snapshots}
     result: list[ProjectSummaryResponse] = []
@@ -7514,6 +7514,11 @@ def _normalize_project_id(project_id: str) -> str:
 
 def _delete_project_data(project_id: str, request: ProjectDeleteRequest) -> list[str]:
     deleted: list[str] = []
+    had_indexed_data = (
+        project_id in _snapshots
+        or project_id in _normalized_projects
+        or _storage.has_snapshot(project_id)
+    )
     _project_setup.pop(project_id, None)
     _snapshots.pop(project_id, None)
     _graphs.pop(project_id, None)
@@ -7534,7 +7539,7 @@ def _delete_project_data(project_id: str, request: ProjectDeleteRequest) -> list
             if folder.exists():
                 shutil.rmtree(folder)
                 deleted.append(folder.name)
-    if request.delete_versions:
+    if request.delete_versions and had_indexed_data:
         count = _storage.delete_documents_matching("object_versions", lambda payload: payload.get("project_id") == project_id)
         if count:
             deleted.append(f"object_versions:{count}")