chengyongru ef268f47d2 chore: remove dead code identified by vulture + coverage cross-validation
Remove unused code confirmed dead via vulture scan, grep verification,
and coverage analysis:

- _get_bridge_dir (cli/commands.py): 82-line function with zero callers
- add_assistant_message (agent/context.py): method body never executed,
  also removed now-unused build_assistant_message import
- _tool_parameters_schema (agent/tools/base.py): redundant copy of schema
  already exposed via the `parameters` property
- MSTEAMS_REF_TTL_S (channels/msteams.py): unused constant (production
  uses config.ref_ttl_days directly); inlined in test
- MESSAGE_TYPE_USER (channels/weixin.py): unused constant
2026-05-12 20:52:48 +08:00
..