Kiosk checks for stable firmware update before pairing. If available,
downloads + verifies + swaps binary and restarts. No auth needed.
Server: GET /api/firmware/public/check (stable channel, no auth)
GET /api/firmware/public/download/:id (rate-limited, no auth)
Kiosk: check_public() + apply_public() in firmware.rs. Called from
ui.rs worker thread before entering pairing loop. kiosk_app_version
made pub for access from ui.rs.
Also includes kiosk_id deserialization fix (Value instead of String).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
routes-os-updates.ts used require() which fails in ESM. Changed to
dynamic import(). Also includes persistent event topic subscriptions
with status tracking (inactive/pending/active/failed), merge-only
refresh, and colored status dots in camera detail UI.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
