Summary

• Fixes TUI does not refresh when session is reset from another client (e.g. Telegram /new) #38966 by teaching the TUI to handle active-session sessions.changed reset/new events from the gateway.
• Clear stale in-memory run state, streaming assembly, local run tracking, and visible stale transcript state before reloading history/session metadata.
• Keep the patch narrow to TUI event dispatch/handling and regression coverage; gateway already emits and advertises sessions.changed on current main.

Credit

This carries forward the useful direction from @wsyjh8 in source PR #40472, with attribution preserved here and in the changelog. Thanks also to @yizhanzjz for the original external reset reproduction in #38966.

Validation

• pnpm -s vitest run src/tui/tui-event-handlers.test.ts
• pnpm check:changed

Clownfish 🐠 replacement reef notes:

• Cluster: ghcrawl-157015-autonomous-smoke
• Source PRs: fix(tui): refresh on external session reset and clear stale run state #40472
• Credit: Credit TUI does not refresh when session is reset from another client (e.g. Telegram /new) #38966 reporter @yizhanzjz for the external reset reproduction and root-cause report.; Credit @wsyjh8 and source PR fix(tui): refresh on external session reset and clear stale run state #40472 for the original implementation direction: refresh TUI state/history and clear stale run state after an external reset.; Mention that fix:(tui) reset stale streaming state after event gaps #62602/fix(stability): session skills snapshot, tool-loop guard, TUI watchdog, LM Studio preload backoff #67401 are related stale-streaming work but not the external reset fix path.
• Validation: pnpm -s vitest run src/tui/tui-event-handlers.test.ts; pnpm check:changed

fish notes: model gpt-5.5, reasoning medium; reviewed against 6ade249.