fix: ruff lint — use orjson, rename loop var, restore except parens

- json → orjson per TID251 (banned import)
- mower_trace: rename for-loop var to avoid PLW2901 reassignment
- restore `except (TypeError, ValueError):` parens (ruff format had stripped them, breaking Python 3 syntax)
- imports reorganised by ruff
- ruff format applied to test_on_map_trace.py and the map __init__.py

8 unit tests for OnMapTrace still pass.

Addresses CI 'Run prek checks' fail.

Author: Beennnn

deebot_client/messages/json/map/__init__.py

@@ -2,10 +2,16 @@
 
 from __future__ import annotations
 
-import json as _json
 from typing import TYPE_CHECKING, Any
 
-from deebot_client.events.map import MajorMapEvent, MapInfoEvent, MapSetType, MapTraceEvent
+import orjson
+
+from deebot_client.events.map import (
+    MajorMapEvent,
+    MapInfoEvent,
+    MapSetType,
+    MapTraceEvent,
+)
 from deebot_client.logging_filter import get_logger
 from deebot_client.message import HandlingResult, HandlingState, MessageBodyDataDict
 from deebot_client.rs.util import decompress_base64_data
@@ -136,12 +142,10 @@ def _handle_body_data_dict(
             return HandlingResult.analyse()
 
         try:
-            decompressed = decompress_base64_data(info).decode("utf-8")
-            groups = _json.loads(decompressed)
+            decompressed = decompress_base64_data(info)
+            groups = orjson.loads(decompressed)
         except Exception:
-            _LOGGER.debug(
-                "Could not decompress/parse onMapTrace info field"
-            )
+            _LOGGER.debug("Could not decompress/parse onMapTrace info field")
             return HandlingResult.analyse()
 
         flat_points: list[str] = []

deebot_client/mower_trace.py

@@ -38,8 +38,8 @@ def add_data(self, raw: str) -> int:
         points (FIFO drop). Returns the number of points actually added.
         """
         new_points: list[tuple[int, int]] = []
-        for token in raw.split(";"):
-            token = token.strip()
+        for raw_token in raw.split(";"):
+            token = raw_token.strip()
             if not token:
                 continue
             try:

tests/messages/json/map/test_on_map_trace.py

@@ -56,19 +56,23 @@ def test_OnMapTrace_decompresses_and_flattens_groups() -> None:
     assert_message(
         OnMapTrace,
         _envelope(_SINGLE_GROUP, 28),
-        (FirmwareEvent("1.15.13"), MapTraceEvent(start=1, total=1, data="100,200;150,250")),
+        (
+            FirmwareEvent("1.15.13"),
+            MapTraceEvent(start=1, total=1, data="100,200;150,250"),
+        ),
         device_class="xmp9ds",
     )
 
 
 def test_OnMapTrace_concatenates_multiple_groups_and_segments() -> None:
-    expected_trace = (
-        "-11850,-28849;-11800,-28899;-12850,-23699;-12800,-23750;-7899,-39700;-7950,-39649"
-    )
+    expected_trace = "-11850,-28849;-11800,-28899;-12850,-23699;-12800,-23750;-7899,-39700;-7950,-39649"
     assert_message(
         OnMapTrace,
         _envelope(_MULTI_GROUP, 110),
-        (FirmwareEvent("1.15.13"), MapTraceEvent(start=1, total=1, data=expected_trace)),
+        (
+            FirmwareEvent("1.15.13"),
+            MapTraceEvent(start=1, total=1, data=expected_trace),
+        ),
         device_class="xmp9ds",
     )