admin: Add graph collection lifecycle support and improve admin logging

docs/CONFIG_DRIFT.md

@@ -12,6 +12,7 @@ This document tracks which environment/configuration knobs impact the indexing p
 | --- | --- | --- | --- |
 | `EMBEDDING_MODEL`, `EMBEDDING_PROVIDER` | Changes vector dimension/model space. | **Recreate** | Collection schema and stored vectors must match the embedding model; `ensure_collection()` recreates the collection when schema differs. |
 | `REFRAG_MODE`, `QWEN3_EMBEDDING_ENABLED`, `MINI_VEC_DIM`, `LEX_SPARSE_MODE` | Adds/removes named vectors (mini, sparse) and advanced embedding paths. | **Recreate** | Qdrant cannot add/remove vector names in-place; we back up → delete → recreate the collection to apply these changes. |
+| `INDEX_GRAPH_EDGES` | Enables/disables graph edge indexing for symbol relationships (defaults to enabled). | **Recreate** | Graph collections (`_graph` suffix) are created/deleted based on this setting; requires collection recreation. |
 | `INDEX_SEMANTIC_CHUNKS`, `INDEX_CHUNK_LINES`, `INDEX_CHUNK_OVERLAP` | Alters semantic chunk sizes/overlaps. | **Reindex** | Requires reprocessing every file so chunks align with the new geometry. |
 | `INDEX_MICRO_CHUNKS`, `MICRO_CHUNK_TOKENS`, `MICRO_CHUNK_STRIDE`, `MAX_MICRO_CHUNKS_PER_FILE` | Controls micro-chunk tier and token window. | **Reindex** | Points must be regenerated with the new token windows. |
 | `USE_TREE_SITTER`, `INDEX_USE_ENHANCED_AST` | Enables AST-guided segmentation + smart reindex logic. | **Reindex** | Cached symbols and chunk boundaries change; files need reindexing to stay consistent. |

scripts/admin_ui.py

@@ -51,6 +51,7 @@ def render_admin_acl(
     deletion_enabled: bool = False,
     work_dir: str = "/work",
     refresh_ms: int = 5000,
+    flash: Optional[Dict[str, str]] = None,
     status_code: int = 200,
 ) -> Any:
     return _templates.TemplateResponse(
@@ -65,6 +66,7 @@ def render_admin_acl(
             "work_dir": work_dir,
             "staging_enabled": bool(is_staging_enabled() if callable(is_staging_enabled) else False),
             "refresh_ms": int(refresh_ms) if refresh_ms is not None else 5000,
+            "flash": flash,
         },
         status_code=status_code,
     )

scripts/collection_admin.py

@@ -4,6 +4,7 @@
 import re
 import shutil
 import time
+import logging
 from pathlib import Path
 from datetime import datetime
 from typing import Any, Dict, Optional, List
@@ -29,6 +30,14 @@
 except Exception:
     get_collection_mappings = None
 
+try:
+    from scripts.ingest.graph_edges import get_graph_collection_name
+except Exception:
+    get_graph_collection_name = None
+
+
+logger = logging.getLogger(__name__)
+
 
 _SLUGGED_REPO_RE = re.compile(r"^.+-[0-9a-f]{16}(?:_old)?$")
 _MARKER_NAME = ".ctxce_managed_upload"
@@ -198,23 +207,45 @@ def delete_collection_everywhere(
         "collection": name,
         "qdrant_deleted": False,
         "registry_marked_deleted": False,
+        "graph_collection_deleted": False,
         "deleted_state_files": 0,
         "deleted_managed_workspaces": 0,
     }
 
     target_is_old = name.endswith("_old")
 
-    # 1) Delete Qdrant collection
+    # 1) Delete Qdrant collection and its associated graph collection
     try:
         if pooled_qdrant_client is not None:
             with pooled_qdrant_client(url=qdrant_url, api_key=os.environ.get("QDRANT_API_KEY")) as cli:
+                # Delete main collection
                 try:
                     cli.delete_collection(collection_name=name)
                     out["qdrant_deleted"] = True
-                except Exception:
+                except Exception as main_err:
                     out["qdrant_deleted"] = False
-    except Exception:
+                    logger.warning("[collection_admin] Failed to delete collection %s: %s", name, main_err)
+                    raise RuntimeError(f"Failed to delete collection {name}") from main_err
+
+                # Delete graph collection if it exists
+                if get_graph_collection_name is not None:
+                    try:
+                        graph_collection = get_graph_collection_name(name)
+                        cli.delete_collection(collection_name=graph_collection)
+                        out["graph_collection_deleted"] = True
+                    except Exception as graph_err:
+                        # Best-effort: graph collection might not exist
+                        out["graph_collection_deleted"] = False
+                        logger.warning(
+                            "[collection_admin] Failed to delete graph collection %s (best-effort): %s",
+                            name if "graph_collection" not in locals() else graph_collection,
+                            graph_err,
+                        )
+    except Exception as delete_exc:
+        logger.error("[collection_admin] Error deleting collections %s: %s", name, delete_exc)
         out["qdrant_deleted"] = False
+        out["graph_collection_deleted"] = False
+        raise
 
     # 2) Mark deleted in registry DB
     try: