hussein1362 d45ffcf519 feat(config): wire max_messages into session history replay
The max_messages config field in AgentDefaults was accepted by the
schema but never threaded through to the actual get_history() calls
in the agent loop.  Both call sites in _process_message hardcoded the
default, so sessions with slow or local models accumulated unbounded
history that inflated prompt tokens and caused LLM timeouts.

Changes:
- Add max_messages field to AgentDefaults (default 0 = use built-in
  constant, any positive value caps history replay)
- Store the value on AgentLoop and pass it to get_history() when
  non-zero
- Wire the config through all three AgentLoop construction sites in
  commands.py (gateway, API server, CLI chat)
- 14 focused tests covering schema validation, init storage, history
  slicing, boundary alignment, integration wiring, and the
  zero/default path
2026-04-28 14:54:32 +08:00
..
2026-02-01 07:36:42 +00:00