fix(retrieval): preserve project ids across unscoped ingest

tests/test_ingestion.py

@@ -103,6 +103,66 @@ def test_ingest_file_records_project_id_metadata(tmp_data_dir, sample_markdown,
     )
 
 
+def test_ingest_file_derives_project_id_from_registry_root(tmp_data_dir, tmp_path, monkeypatch):
+    """Unscoped ingest should preserve ownership for files under registered roots."""
+    import atocore.config as config
+
+    vault_dir = tmp_path / "vault"
+    drive_dir = tmp_path / "drive"
+    config_dir = tmp_path / "config"
+    project_dir = vault_dir / "incoming" / "projects" / "p04-gigabit"
+    project_dir.mkdir(parents=True)
+    drive_dir.mkdir()
+    config_dir.mkdir()
+    note = project_dir / "status.md"
+    note.write_text(
+        "# Status\n\nCurrent project status with enough detail to create "
+        "a retrievable chunk for the ingestion pipeline test.",
+        encoding="utf-8",
+    )
+    registry_path = config_dir / "project-registry.json"
+    registry_path.write_text(
+        json.dumps(
+            {
+                "projects": [
+                    {
+                        "id": "p04-gigabit",
+                        "aliases": ["p04"],
+                        "ingest_roots": [
+                            {"source": "vault", "subpath": "incoming/projects/p04-gigabit"}
+                        ],
+                    }
+                ]
+            }
+        ),
+        encoding="utf-8",
+    )
+
+    class FakeVectorStore:
+        def __init__(self):
+            self.metadatas = []
+
+        def add(self, ids, documents, metadatas):
+            self.metadatas.extend(metadatas)
+
+        def delete(self, ids):
+            return None
+
+    fake_store = FakeVectorStore()
+    monkeypatch.setenv("ATOCORE_VAULT_SOURCE_DIR", str(vault_dir))
+    monkeypatch.setenv("ATOCORE_DRIVE_SOURCE_DIR", str(drive_dir))
+    monkeypatch.setenv("ATOCORE_PROJECT_REGISTRY_PATH", str(registry_path))
+    config.settings = config.Settings()
+    monkeypatch.setattr("atocore.ingestion.pipeline.get_vector_store", lambda: fake_store)
+
+    init_db()
+    result = ingest_file(note)
+
+    assert result["status"] == "ingested"
+    assert fake_store.metadatas
+    assert all(meta["project_id"] == "p04-gigabit" for meta in fake_store.metadatas)
+
+
 def test_ingest_project_folder_passes_project_id_to_files(tmp_data_dir, sample_folder, monkeypatch):
     seen = []