- Bounded/cursor SSE refresh path now sanitizes through
sanitizeChatHistoryMessages before paginating, matching the
unbounded path and initial history load.
- Export DEFAULT_CHAT_HISTORY_TEXT_MAX_CHARS from chat.ts and
import in sessions-history-http.ts instead of duplicating.
- Use `sonnet-4` substring match instead of enumerating `sonnet-4-5`,
`sonnet-4-6` explicitly. This is safe because legacy `claude-3-5-sonnet`
does not contain `sonnet-4`, and it future-proofs for sonnet-4-7+.
- Export `shouldPreserveThinkingBlocks` from provider-replay-helpers.ts
and import it in transcript-policy.ts instead of duplicating the logic.
Addresses review feedback from Greptile.
Claude Opus 4.5+ and Sonnet 4.5+ preserve thinking blocks in model context
by default. Dropping them from prior turns (as was correct for Sonnet 3.7)
breaks Anthropic's prefix-based prompt cache matching, causing cache misses
after every thinking turn.
This change conditions dropThinkingBlocks on the model version:
- Preserve (no drop) for: opus-4.x, sonnet-4.5+, haiku-4.x, and future models
- Drop for: claude-3-7-sonnet and earlier
Fixes#61793
See: https://platform.claude.com/docs/en/build-with-claude/extended-thinking#differences-in-thinking-across-model-versions
* fix(exec ): stop emitting tool updates after session is backgrounded
When an exec session is backgrounded (background: true), the owning
agent run resolves its tool-call promise and may finish. The stdout
handler's emitUpdate() closure, however, kept invoking opts.onUpdate(),
delivering tool_execution_update events to a listener whose active run
had already ended. This surfaced as an unhandled rejection and crashed
the gateway process.
Guard emitUpdate() with a session.backgrounded || session.exited check
so that post-background output is still captured via appendOutput() but
no longer forwarded to the (now-stale) agent-loop callback.
Fixes#61592
* style: trim exec backgrounding comments
* fix: stop emitting post-background exec updates (#61627) (thanks @openperf)
* fix: place exec changelog entry at end of fixes (#61627) (thanks @openperf)
---------
Co-authored-by: Ayaan Zaidi <hi@obviy.us>
