Make controller input best-effort and harden OTA rollback.

Accel/tap use fire-and-forget ESP-NOW with a 10 ms FreeRTOS-safe cadence, OTA recovers from seq gaps and auto-reboots after success, and bootloader app rollback confirms after a stable boot.

Co-authored-by: Cursor <cursoragent@cursor.com>

main/esp_now_core.h

@@ -26,6 +26,12 @@ esp_err_t esp_now_core_send(const uint8_t *dest_mac,
 /** Like send but does not wait for esp_now send-done (lower latency). */
 esp_err_t esp_now_core_send_fast(const uint8_t *dest_mac,
                                  const alox_EspNowMessage *msg);
+/**
+ * Fire-and-forget without failure logs — for high-rate gaming input
+ * (accel/tap) where drops are expected under load.
+ */
+esp_err_t esp_now_core_send_best_effort(const uint8_t *dest_mac,
+                                        const alox_EspNowMessage *msg);
 esp_err_t esp_now_core_send_wait(const uint8_t *dest_mac,
                                  const alox_EspNowMessage *msg);
 /** OTA payloads: wait for send-done with extra NO_MEM backoff (queue drain). */