fix(gateway): detach pending_watchers batch + normalize LRU caches + align test fixtures + AUTHOR_MAP

Self-review follow-up on top of the salvaged perf fixes:

- gateway/run.py (both watcher-drain sites): the salvaged O(n^2) fix
  (#32708) replaced `while pending_watchers: pop(0)` with iterate-then-
  `watchers.clear()`, but `watchers` aliased the registry's live list.
  A watcher appended by a concurrent session during the `await
  asyncio.sleep(0)` yield would be cleared without ever being scheduled.
  Detach the batch atomically (`pending_watchers = []`) before iterating.

- gateway/platforms/bluebubbles.py: normalize the salvaged _guid_cache
  LRU (#30523) to match feishu/codebase precedent — module-level
  `_GUID_CACHE_SIZE` constant, `while len > cap`, and drop the redundant
  post-insert `move_to_end` (a fresh insert is already most-recent).

- gateway/platforms/feishu.py: drop the same redundant post-insert
  `move_to_end` from the salvaged _message_text_cache LRU (#23706).

- scripts/release.py: add AUTHOR_MAP entries for the salvaged commits'
  authors (amathxbt #22155, ErnestHysa #32636/#32708) so the contributor
  audit passes when these commits land on main.

- tests/tools/test_tool_output_limits.py: autouse fixture resets the new
  module-level limits cache between tests.

- tests/gateway/test_feishu.py: hand-built adapter fixture seeded
  _message_text_cache as a plain dict; it's now an OrderedDict, so the
  fixture type had to match.

gateway/platforms/feishu.py

@@ -3982,7 +3982,6 @@ class FeishuAdapter(BasePlatformAdapter):
                 mentions=parent_mentions,
             )
             self._message_text_cache[message_id] = text
-            self._message_text_cache.move_to_end(message_id)
             while len(self._message_text_cache) > _FEISHU_MESSAGE_TEXT_CACHE_SIZE:
                 self._message_text_cache.popitem(last=False)
             return text