fix(kanban): bridge worker runtime activity to board heartbeat (#31752)

The dispatcher watchdog (release_stale_claims) reads tasks.last_heartbeat_at
to decide whether to reclaim a running task. The agent maintains its own
in-process `_last_activity_ts` for every chunk/tool result, but those
liveness ticks never reach the board unless the model explicitly calls
the `kanban_heartbeat` tool — so a worker actively executing a long run
without tool-level heartbeats can be reclaimed mid-flight as 'stale',
returning the task to ready and orphaning the in-flight worker's progress.

Fix: in `_touch_activity` (the canonical 'we just did work' hook in
run_agent.py), call a new `heartbeat_current_worker_from_env` helper
in `tools/kanban_tools.py` that:

- No-ops outside dispatcher-spawned worker context (no HERMES_KANBAN_TASK).
- Rate-limited to one DB write per 60s (runtime activity ticks too often
  to faithfully mirror; we just need the watchdog to see liveness).
- Best-effort: never raises. heartbeat_claim + heartbeat_worker calls are
  individually try/except'd; any DB error logs at debug and returns.
- Uses worker env identity: HERMES_KANBAN_TASK + HERMES_KANBAN_RUN_ID +
  HERMES_KANBAN_CLAIM_LOCK (all pinned by the dispatcher at spawn time).
- No durable note on auto-heartbeats — that's reserved for the explicit
  `kanban_heartbeat` tool which carries a model-supplied note.

The explicit `kanban_heartbeat` tool stays available unchanged for
workers that want to attach a note or pre-emptively extend a claim
across a known-long single tool call.

Co-authored-by: faisfamilytravel <223516181+faisfamilytravel@users.noreply.github.com>

scripts/release.py

@@ -61,6 +61,7 @@ AUTHOR_MAP = {
     "wuxuebin1993@gmail.com": "victorGPT",
     "211828103+julio-cloudvisor@users.noreply.github.com": "julio-cloudvisor",
     "17778+kweiner@users.noreply.github.com": "kweiner",
+    "223516181+faisfamilytravel@users.noreply.github.com": "faisfamilytravel",
     # teknium (multiple emails)
     "teknium1@gmail.com": "teknium1",
     "kenyon1977@gmail.com": "kenyonxu",