- Add HardBlock variant to WatcherEvent (story_id, agent_name, reset_time)
- In pty.rs, distinguish allowed_warning (throttle) from hard blocks;
emit RateLimitWarning for throttles, HardBlock for actual 429s
- Add `throttled: bool` field to StoryAgent / AgentInfo
- Pool spawns a background listener that sets throttled=true on
RateLimitWarning or HardBlock events and fires AgentStateChanged
- Status command shows traffic-light dots: ○ idle, ● running, ◑ throttled, ✗ blocked
- Read blocked flag from story front matter for the ✗ dot
- Notifications: RateLimitWarning silenced (too noisy); HardBlock sends
urgent chat notification with optional reset time
- Tests added for traffic_light_dot, read_story_blocked, status output,
and all notification paths
- Add `unblock` bot command (chat + web UI slash command) that clears the
`blocked` flag and resets `retry_count` to 0 in story front matter
- Works across all pipeline stages (1_backlog through 6_archived)
- Returns confirmation with story name and ID, or clear error if story
is not found or not blocked
- Expose `unblock_story` MCP tool for programmatic use by agents
- Make `chat::commands::unblock` module pub(crate) so story_tools can
call `unblock_by_number`
- Add 8 unit tests covering registration, validation, core logic, and
edge cases (not-found, not-blocked, any stage, story ID in response)
- Update MCP tools list test: 49 → 50 tools