fix(retrieval): fail open on registry resolution errors

src/atocore/ingestion/pipeline.py

@@ -42,7 +42,12 @@ def ingest_file(file_path: Path, project_id: str = "") -> dict:
             from atocore.projects.registry import derive_project_id_for_path
 
             project_id = derive_project_id_for_path(file_path)
-        except Exception:
+        except Exception as exc:
+            log.warning(
+                "project_id_derivation_failed",
+                file_path=str(file_path),
+                error=str(exc),
+            )
             project_id = ""
 
     if not file_path.exists():

src/atocore/retrieval/retriever.py

@@ -84,7 +84,15 @@ def retrieve(
     """Retrieve the most relevant chunks for a query."""
     top_k = top_k or _config.settings.context_top_k
     start = time.time()
-    scoped_project = get_registered_project(project_hint) if project_hint else None
+    try:
+        scoped_project = get_registered_project(project_hint) if project_hint else None
+    except Exception as exc:
+        log.warning(
+            "project_scope_resolution_failed",
+            project_hint=project_hint,
+            error=str(exc),
+        )
+        scoped_project = None
     scope_filter_enabled = bool(scoped_project and _config.settings.rank_project_scope_filter)
     registered_projects = None
     query_top_k = top_k
@@ -292,7 +300,15 @@ def _project_match_boost(project_hint: str, metadata: dict) -> float:
     if not hint_lower:
         return 1.0
 
-    project = get_registered_project(project_hint)
+    try:
+        project = get_registered_project(project_hint)
+    except Exception as exc:
+        log.warning(
+            "project_match_boost_resolution_failed",
+            project_hint=project_hint,
+            error=str(exc),
+        )
+        project = None
     candidate_names = _project_scope_terms(project) if project is not None else {hint_lower}
     for candidate in candidate_names:
         if _metadata_has_term(metadata, candidate):