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/client_registry.h

@@ -2,6 +2,7 @@
 #define CLIENT_REGISTRY_H
 
 #include "board_input.h"
+#include "bosch456.h"
 #include "esp_err.h"
 #include <stdbool.h>
 #include <stddef.h>
@@ -22,6 +23,8 @@ typedef struct {
   uint32_t version;
   /** Accel deadzone in raw LSB per axis (master copy for ESP-NOW config). */
   uint32_t accel_deadzone;
+  /** Tap detection config (master copy for ESP-NOW / UART read). */
+  bma456_tap_config_t tap_config;
   /** Latest accel from slave ESP-NOW stream (master only). */
   bool accel_valid;
   int16_t accel_x;
@@ -88,6 +91,12 @@ esp_err_t client_registry_get_accel_deadzone(uint32_t client_id,
 /** Push deadzone to all active registry entries; returns count updated. */
 size_t client_registry_set_accel_deadzone_all(uint32_t deadzone);
 
+esp_err_t client_registry_set_tap_config(uint32_t client_id,
+                                         const bma456_tap_config_t *cfg);
+esp_err_t client_registry_get_tap_config(uint32_t client_id,
+                                         bma456_tap_config_t *cfg_out);
+size_t client_registry_set_tap_config_all(const bma456_tap_config_t *cfg);
+
 /** Store latest accel sample from a slave (matched by sender MAC). */
 esp_err_t client_registry_update_accel(const uint8_t mac[CLIENT_MAC_LEN],
                                        uint32_t slave_id, int16_t x, int16_t y,