Heartbeat v1.1.0 now carries heap stats (free + min_free since boot), esp_reset_reason(), last WiFi disconnect code, and the last 8 persisted event-log entries. Makes field failures diagnosable server-side without retrieving the device: the post-reboot heartbeat will include EVT_BOOT with reset reason and whatever EVT_WIFI_DOWN or EVT_HTTP_FAIL entries preceded it.