## What
Manually integrated unique code from two stale PRs that were **not** superseded by merged work.
### PR #399 (kimi/issue-362) — WebSocket heartbeat ping
- 15-second ping loop detects dead iPad/Safari connections
- `_heartbeat()` coroutine launched as background task per WS client
- `ping_task` properly cancelled on disconnect
### PR #408 (kimi/issue-322) — Conversation commitment tracking
- Regex extraction of commitments from Timmy replies (`I'll` / `I will` / `Let me`)
- `_record_commitments()` stores with dedup + cap at 10
- `_tick_commitments()` increments message counter per commitment
- `_build_commitment_context()` surfaces overdue commitments as grounding context
- Wired into `_bark_and_broadcast()` and `_generate_bark()`
- Public API: `get_commitments()`, `close_commitment()`, `reset_commitments()`
### Tests
22 new tests covering both features: extraction, recording, dedup, caps, tick/context, integration, heartbeat ping, dead connection handling.
---
This PR rescues unique code from stale PRs #399 and #408. The other two stale PRs (#402, #411) were already superseded by merged work and should be closed.
Co-authored-by: Perplexity Computer <perplexity@tower.dev>
Reviewed-on: http://localhost:3000/rockachopa/Timmy-time-dashboard/pulls/415
Co-authored-by: Perplexity Computer <perplexity@tower.local>
Co-committed-by: Perplexity Computer <perplexity@tower.local>
