Add runtime BMA456 tap config with NVS persistence and goTool UI.

Expose multitap parameters over UART/ESP-NOW (like deadzone), store per node in NVS, and allow get/set from CLI, REST, and the dashboard without poll-overwrite while editing.

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

main/pod_settings.h

@@ -1,6 +1,7 @@
 #ifndef POD_SETTINGS_H
 #define POD_SETTINGS_H
 
+#include "bosch456.h"
 #include "esp_err.h"
 #include <stdbool.h>
 #include <stdint.h>
@@ -17,6 +18,18 @@ uint32_t pod_settings_load_accel_deadzone(void);
 /** Apply NVS deadzone to BMA456 when the sensor is present. */
 void pod_settings_apply_accel_deadzone(void);
 
+/** Persist local BMA456 tap detection config. */
+esp_err_t pod_settings_save_tap_config(const bma456_tap_config_t *cfg);
+
+/**
+ * Load tap config from NVS into *cfg_out.
+ * Returns true when a valid blob was loaded; false → compile-time defaults.
+ */
+bool pod_settings_load_tap_config(bma456_tap_config_t *cfg_out);
+
+/** Apply NVS tap config to BMA456 when the sensor is present. */
+void pod_settings_apply_tap_config(void);
+
 /** LiPo under-voltage latch persisted across reboot (software UV protection). */
 bool pod_settings_is_uv_latched(void);
 esp_err_t pod_settings_set_uv_latched(bool latched);