fix: all imports → relative (from .xxx) — no stdlib site conflict

site/routes/api_bp.py

@@ -1,9 +1,9 @@
 """API blueprint — groups, documents, supplements, sync, cleanup, spec-current, chat."""
 from flask import Blueprint, request, jsonify
-from site.db import documents, supplements, spec_current
-from site.db.connection import execute, query
-from site.services.grouping import group_documents, apply_groups
-from site.config import LLM_URL, LLM_KEY, LLM_MODEL
+from .db import documents, supplements, spec_current
+from .db.connection import execute, query
+from .services.grouping import group_documents, apply_groups
+from .config import LLM_URL, LLM_KEY, LLM_MODEL
 import httpx
 
 api_bp = Blueprint("api", __name__)
@@ -177,6 +177,6 @@ def chat():
 @api_bp.route("/api/cleanup", methods=["POST"])
 def api_cleanup():
     """Полная очистка: os.remove(DB) + init новой. Данные гарантированно стёрты."""
-    from site.db.connection import cleanup_db
+    from .db.connection import cleanup_db
     cleanup_db()
     return jsonify(ok=True, message="all data cleaned")