fix(agent): cap recent history section in system prompt#3414
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Truncate the "Recent History" section injected by build_system_prompt() to 32K chars. Without this, many accumulated history.jsonl entries could still bloat the system prompt even with per-entry truncation in place.
This was referenced Apr 24, 2026
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Cherry-pick of the context.py guard from #3412.
Truncate the "Recent History" section injected by
build_system_prompt()to 32K chars. Without this, many accumulated history.jsonl entries could still bloat the system prompt even with per-entry truncation in place.