Files
hermes-agent/tests/run_agent
PRATHAMESH75 ece3bc7d52 fix(agent): skip the automatic background review inside delegation subagents
The post-turn background review fork (`agent/background_review.py`) inherits
the parent agent's live runtime by default. That is a cost win when the parent
IS the main chat model (warm prompt cache, cheap), but the fork also fires
inside delegation subagents, where it inherits the *subagent's* model. When a
subagent runs a premium delegation model, the review silently replays the whole
conversation and emits skill/memory-update output at premium rates, with
nothing in the log or config flagging it (#85859).

Subagents are already barred from writing shared MEMORY.md
(`DELEGATE_BLOCKED_TOOLS`) and are spawned with `skip_memory=True`, so an
automatic review here has little to persist. Guard `_spawn_background_review`
(the single choke point both the turn-finalizer and codex-runtime callers pass
through) to return early when `_delegate_depth > 0`. An explicit `/refine`
(`focus` set) is a deliberate user request and still runs; the top-level path
is unchanged.

Fixes #85859
2026-08-15 02:44:38 -07:00
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