feat(kanban): carry the review handoff summary into the wake turn

[nikitaBarkov]

What does this PR do?

Puts the worker's handoff summary inside the synthetic wake turn for review_requested, the way completed already does.

The completed branch of the gateway kanban notifier copies the run summary into wake_handoff, which is rendered through gateway.kanban.wake.handoff ("Result: …") in the synthetic turn. The review_requested branch only used the summary for the passive 👀 … ready for review ping, so the wake turn read "Task X handed off for review; the implementation is done" and nothing else — the woken reviewer had to go read the board to learn what was implemented, and the PR link the worker had already written in its handoff was dropped.

Follow-up to #31 (which made review_requested wake the origin at all). Same first-line/200-char handoff shape as completed, so no new locale keys and no change to the passive message.

Related Issue

No issue. Observed on a live board: the review wake turn arrived without the worker's summary, unlike the completion wake turn.

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 🔒 Security fix
• 📝 Documentation update
• ✅ Tests (adding or improving test coverage)
• ♻️ Refactor (no behavior change)
• 🎯 New skill (bundled or hub)

Changes Made

• gateway/kanban_watchers.py: in the review_requested branch, set wake_handoff from the event's summary (first line, 200 chars) exactly like the completed branch does.
• tests/gateway/test_kanban_notifier.py: the review-handoff task now reports a multi-line summary with a PR link, and the wake test asserts that link is inside the wake turn.
• website/docs/user-guide/features/kanban.md: state that a completed or review_requested summary rides the wake turn.

How to Test

1. Subscribe a chat with notify+wake, let a worker call kanban_request_review(summary="PR ready: <url>"). The wake turn now contains Result: PR ready: <url> on top of the passive ping.
2. scripts/run_tests.sh tests/gateway/test_kanban_notifier.py tests/hermes_cli/test_kanban_review_lifecycle.py tests/agent/test_i18n.py -q — 3 files, 67 tests, 0 failures.
3. Mutation check: dropping the wake_handoff assignment fails test_review_requested_wakes_the_origin_session.

Checklist

Code

• I've read the Contributing Guide
• My commit messages follow Conventional Commits
• I searched for existing PRs to make sure this isn't a duplicate
• My PR contains only changes related to this change
• I've run the affected tests and they pass
• I've added tests for my changes
• I've tested on macOS 15.6

Documentation & Housekeeping

• I've updated relevant documentation — website/docs/user-guide/features/kanban.md
• I've updated cli-config.yaml.example — N/A, no new config keys
• I've updated CONTRIBUTING.md / AGENTS.md — N/A, no architecture or workflow change
• Cross-platform impact considered — pure Python, no OS-specific code
• Tool descriptions/schemas — N/A, no tool changes