clean: _guess_mime → общий mimeutil.py (убраны дубликаты)

site/api.py

@@ -18,6 +18,7 @@ import parser as parser_mod
 import textify
 import extractor
 import differ
+import mimeutil
 
 api_bp = Blueprint("api", __name__)
 
@@ -107,7 +108,7 @@ def add_supplement(contract_id):
         return jsonify({"error": "empty filename"}), 400
 
     filename = file.filename
-    mime_type = _guess_mime(filename) or file.content_type or "application/octet-stream"
+    mime_type = mimeutil.guess_mime(filename) or file.content_type or "application/octet-stream"
     file_bytes = file.read()
 
     # 2. Сохранить в documents
@@ -260,18 +261,3 @@ def get_history(contract_id):
 
 # ── Вспомогательные ─────────────────────────────────────────────
 
-def _guess_mime(filename: str) -> str:
-    """MIME-тип по расширению."""
-    ext = filename.lower().rsplit(".", 1)[-1] if "." in filename else ""
-    return {
-        "docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
-        "doc": "application/msword",
-        "pdf": "application/pdf",
-        "zip": "application/zip",
-    }.get(ext, "")
-
-
-def _jsonb(val):
-    """Подготовить значение для JSONB-колонки."""
-    import json
-    return json.dumps(val, ensure_ascii=False, default=str) if val is not None else None