jerry/buzz

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tlongwell-block 16299b4e3f mesh-llm: heartbeat republish — keep offers fresh while the panel is mounted

Without heartbeat, the expires_at TTL added in the previous commit makes
offers vanish from consumer UIs 15 min after the user toggles on, even
if the publisher is still running fine. The original commit message
even noted this gap but didn't implement it. Fixing now.

desktop/src/features/settings/hooks/useMeshOfferHeartbeat.ts (new):
- HEARTBEAT_MS = 5 minutes (~OFFER_TTL_SECS / 3 — so one missed beat
  still leaves the offer visible; only two consecutive misses drop us).
- While { enabled, irohRelayUrl } are both truthy, setInterval calls
  mesh_publish_offer, which re-stamps expires_at = now + 15 min as a
  NIP-33 replace under the same (pubkey, d_tag) address.
- Errors are logged and ignored — the user isn't waiting in front of the
  panel; the next tick or an explicit prefs change will surface a fresh
  error if the relay is durably down.

desktop/src/features/settings/ui/MeshComputeSettingsCard.tsx:
- New irohRelayUrl state, populated on mount and after every persist().
- useMeshOfferHeartbeat({ enabled, irohRelayUrl }) wired in.
- Mount-time relay probe so a user opening the panel with sharing
  already enabled from a previous session starts heartbeating
  immediately; failures are non-fatal (console.warn, prefs still
  editable).

pnpm typecheck + pnpm check clean.

Signed-off-by: Tyler Longwell <109685178+tlongwell-block@users.noreply.github.com>
Co-authored-by: Dawn (sprout agent) <c6237ef84fa537c78dcee78efd2d4e59f728859c7f194da42ac51ededfa0be05@sprout-oss.stage.blox.sqprod.co>

2026-05-19 17:22:00 -04:00