perf: suppression de répertoire incrémentale au lieu du re-scan complet #BUG-113

tests/test_api_main.py

@@ -340,6 +340,42 @@ class TestDirectoryCRUD:
         data = resp.json()
         assert data["success"] is True
 
+    def test_delete_directory_subtree_clears_index(self, client):
+        """BUG-113 : suppression incrémentale — aucun fantôme dans paths ni
+        dans l'index inversé, sans re-scan complet de la vault."""
+        # Create files inside the directory
+        for name in ("alpha.md", "nested/beta.md"):
+            r = client.post("/api/file/TestVault", json={
+                "path": f"Projets/{name}",
+                "content": f"contenu unique {name}",
+            })
+            assert r.status_code == 200
+
+        # Indexed before deletion
+        paths_before = client.get("/api/vault/TestVault/paths").json()["results"]
+        assert any(p["path"] == "Projets/alpha.md" for p in paths_before)
+        hit = client.get("/api/search", params={"q": "alpha", "vault": "TestVault"}).json()
+        results = hit.get("results", hit if isinstance(hit, list) else [])
+        assert any(r["path"] == "Projets/alpha.md" for r in results)
+
+        # Delete the whole directory
+        resp = client.delete("/api/directory/TestVault", params={"path": "Projets"})
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["success"] is True
+        assert data["deleted_count"] >= 2
+
+        # No ghost in flat paths
+        paths_after = client.get("/api/vault/TestVault/paths").json()["results"]
+        ghost_dirs = [p["path"] for p in paths_after if p["path"].startswith("Projets")]
+        assert ghost_dirs == [], f"fantômes dans paths : {ghost_dirs}"
+
+        # No ghost in inverted index (full-text search)
+        hit = client.get("/api/search", params={"q": "alpha", "vault": "TestVault"}).json()
+        results = hit.get("results", hit if isinstance(hit, list) else [])
+        assert all(r["path"] != "Projets/alpha.md" for r in results)
+        assert all(r["path"] != "Projets/nested/beta.md" for r in results)
+
 
 # ═══════════════════════════════════════════════════════════════════
 # Search & Tags (supplement existing tests)