Send ESP-NOW accel only on deadzone change and harden BLE+WiFi OTA coex.

Quiet pods no longer spam 100 Hz samples; mute wifi logs and throttle BLE
notifies during slave distribution so the wifi task stack does not panic.

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

main/esp_now_core.c

@@ -280,6 +280,14 @@ esp_err_t esp_now_core_init_radio(uint8_t channel) {
   ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE));
   ESP_ERROR_CHECK(esp_wifi_set_channel(channel, WIFI_SECOND_CHAN_NONE));
 
+  /* WiFi task stack is tiny; ERROR logs from pp/coex (e.g. under BLE+ESP-NOW
+   * OTA) call esp_log_write on that stack and can overflow → panic reboot.
+   * Mute after esp_wifi_init (which resets the wifi tag to default level). */
+  esp_log_level_set("wifi", ESP_LOG_NONE);
+  esp_log_level_set("wifi_init", ESP_LOG_WARN);
+  esp_log_level_set("coex", ESP_LOG_WARN);
+  esp_log_level_set("NimBLE", ESP_LOG_WARN);
+
   ESP_ERROR_CHECK(esp_read_mac(s_own_mac, ESP_MAC_WIFI_STA));
   s_wifi_channel = channel;
   return ESP_OK;