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/proto/uart_messages.proto

@@ -33,6 +33,8 @@ enum MessageType {
   ESPNOW_ECHO_PING = 30;
   /** Host → master: get/set ESP-IDF log level for tag "*" (global). */
   SET_LOG_LEVEL = 31;
+  /** Host → master: get/set BMA456H multitap detection parameters. */
+  TAP_CONFIG = 32;
 }
 
 message UartMessage {
@@ -71,6 +73,8 @@ message UartMessage {
     EspNowEchoPingResponse espnow_echo_ping_response = 36;
     SetLogLevelRequest set_log_level_request = 37;
     SetLogLevelResponse set_log_level_response = 38;
+    TapConfigRequest tap_config_request = 39;
+    TapConfigResponse tap_config_response = 40;
   }
 }
 
@@ -345,6 +349,38 @@ message SetLogLevelResponse {
   uint32 level = 2;
 }
 
+// write=false: read tap config; write=true: apply + persist on target node.
+// client_id 0 = local BMA456; >0 = slave id on master; all_clients = push to all slaves.
+message TapConfigRequest {
+  bool write = 1;
+  uint32 client_id = 2;
+  bool all_clients = 3;
+  uint32 tap_sens_thres = 4;
+  uint32 max_gest_dur = 5;
+  uint32 tap_shock_dur = 6;
+  uint32 quite_time_after_gest = 7;
+  uint32 wait_for_timeout = 8;
+  uint32 axis_sel = 9;
+  bool enable_single = 10;
+  bool enable_double = 11;
+  bool enable_triple = 12;
+}
+
+message TapConfigResponse {
+  uint32 client_id = 1;
+  bool success = 2;
+  uint32 slaves_updated = 3;
+  uint32 tap_sens_thres = 4;
+  uint32 max_gest_dur = 5;
+  uint32 tap_shock_dur = 6;
+  uint32 quite_time_after_gest = 7;
+  uint32 wait_for_timeout = 8;
+  uint32 axis_sel = 9;
+  bool enable_single = 10;
+  bool enable_double = 11;
+  bool enable_triple = 12;
+}
+
 // Host → device: begin UART OTA (erase inactive OTA slot; device replies OTA_STATUS).
 message OtaStartPayload {
   uint32 total_size = 1;