Files
hermes-agent/agent
Jan-Stefan Janetzky 8cc379b528 fix(memory): bind the checkpoint gate to every compaction authority
The fail-closed gate lived only in compress_context(), but two native
lossy owners compact without ever crossing it (review on #93996):

- codex app-server: in "native"/"off" auto-compaction mode (native is the
  default) Hermes preflight is skipped and the codex agent compacts its
  own thread inside run_turn() — the compress_context() rejection was
  unreachable. init_agent now refuses checkpoint_required together with
  api_mode=codex_app_server (BLOCKED_MISSING_PREREQUISITE, extracted as a
  testable guard), and run_codex_app_server_turn() fails closed as
  defense in depth before a turn can reach the codex-owned boundary.
- Responses server-side native compaction:
  native_compaction_context_management() now returns None while the gate
  is armed, so context_management never goes on the wire and the
  checkpoint-aware Hermes compressor stays authoritative. The suppression
  is logged once per process, not silently applied.

Regressions: checkpoint_required + app-server raises before run_turn()
(the session is never created); checkpoint_required keeps
context_management off the wire while the plain configuration still
produces it; the init guard refuses exactly the incompatible pair. Docs
and cli-config.yaml.example describe both bindings.

Refs #93986
2026-08-25 03:55:55 -07:00
..