First wave of work

app/repository/messages.py

@@ -26,6 +26,7 @@ class MessageRepository:
         conversation_key: str,
         sender_timestamp: int | None = None,
         path: str | None = None,
+        path_len: int | None = None,
         txt_type: int = 0,
         signature: str | None = None,
         outgoing: bool = False,
@@ -43,7 +44,10 @@ class MessageRepository:
         # Convert single path to paths array format
         paths_json = None
         if path is not None:
-            paths_json = json.dumps([{"path": path, "received_at": received_at}])
+            normalized_path_len = path_len if isinstance(path_len, int) else len(path) // 2
+            path_entry: dict[str, Any] = {"path": path, "received_at": received_at}
+            path_entry["path_len"] = normalized_path_len
+            paths_json = json.dumps([path_entry])
 
         cursor = await db.conn.execute(
             """
@@ -74,7 +78,7 @@ class MessageRepository:
 
     @staticmethod
     async def add_path(
-        message_id: int, path: str, received_at: int | None = None
+        message_id: int, path: str, received_at: int | None = None, path_len: int | None = None
     ) -> list[MessagePath]:
         """Add a new path to an existing message.
 
@@ -85,7 +89,10 @@ class MessageRepository:
 
         # Atomic append: use json_insert to avoid read-modify-write race when
         # multiple duplicate packets arrive concurrently for the same message.
-        new_entry = json.dumps({"path": path, "received_at": ts})
+        normalized_path_len = path_len if isinstance(path_len, int) else len(path) // 2
+        new_entry_dict: dict[str, Any] = {"path": path, "received_at": ts}
+        new_entry_dict["path_len"] = normalized_path_len
+        new_entry = json.dumps(new_entry_dict)
         await db.conn.execute(
             """UPDATE messages SET paths = json_insert(
                 COALESCE(paths, '[]'), '$[#]', json(?)