Release v0.27.30

What's Changed

• fix(tool): improve patch context mismatch diagnostics by @KY64 in #2884
• fix(channels): close Slack progress card when reply is anchored to a non-root message (LET-9524) by @cpacker in #3272
• fix(headless): cancel the in-flight turn on SIGINT by @abhay-codes07 in #3239
• docs: require Bun v1.2.20+ for TUI input by @resatu in #1147
• fix: wait for env-routed final assistant response by @sarahwooders in #3271
• fix(slack): stop sending markdown_text alongside chunks in chat.stopStream by @cpacker in #3275
• fix(slack): strip the dead-stream rewrite down to a single terminal summary line by @cpacker in #3276
• feat(slack): per-account text progress mode by @cpacker in #3277
• fix(slack): hydrate attachments from thread broadcast messages by @cpacker in #3281
• feat(harness): memfs-less worker agents and explicit per-session memory scopes by @sarahwooders in #3285
• ci: dispatch downstream CLI version bump on release by @cpacker in #3287
• feat(models): add GPT-5.6 and Grok 4.5 by @AriWebb in #3290
• chore: bump version to 0.27.30 by @github-actions[bot] in #3291

New Contributors

• @abhay-codes07 made their first contribution in #3239
• @resatu made their first contribution in #1147

Full Changelog: v0.27.29...v0.27.30