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>

docs/DOCUMENTATION.md

@@ -175,6 +175,7 @@ UART_CMD_REQ(&uart_msg, alox_UartMessage_accel_deadzone_request_tag, accel_deadz
 | `ESPNOW_SLAVE_INFO` | S→M | `slave_info` | Erste Registrierung |
 | `ESPNOW_HEARTBEAT` | S→M | `heartbeat` | Keepalive 1 s |
 | `ESPNOW_SET_ACCEL_DEADZONE` | M→S | `accel_deadzone` | Deadzone LSB |
+| `ESPNOW_SET_TAP_CONFIG` | M→S | `tap_config` | Multitap-Parameter + NVS |
 | `ESPNOW_SET_ACCEL_STREAM` | M→S | `accel_stream` | Stream ~16 ms |
 | `ESPNOW_ACCEL_SAMPLE` | S→M | `accel_sample` | x/y/z Roh-LSB |
 | `ESPNOW_SET_TAP_NOTIFY` | M→S | `tap_notify` | Tap-Arten filtern |
@@ -238,6 +239,7 @@ Nur auf dem **Master** registriert (`powerpod.c`). IDs aus `MessageType` in `uar
 | 29 | CACHE_STATUS | `cmd_cache_status.c` | Accel + Tap Cache (ein Round-Trip) |
 | 30 | ESPNOW_ECHO_PING | `cmd_espnow_echo_ping.c` | Timestamp-Echo über ESP-NOW (Latenztest) |
 | 31 | SET_LOG_LEVEL | `cmd_set_log_level.c` | ESP-IDF-Log-Level global (`"*"`) lesen/setzen |
+| 32 | TAP_CONFIG | `cmd_tap_config.c` | BMA456 Multitap-Parameter + NVS |
 
 ### 7.1 VERSION (3)
 
@@ -264,6 +266,12 @@ Nur auf dem **Master** registriert (`powerpod.c`). IDs aus `MessageType` in `uar
 - Konfiguriert auf Slave welche Tap-Arten `ESPNOW_TAP_EVENT` auslösen.
 - Tap-Quelle: BMA456-Interrupt → `on_bma456_tap` in `esp_now_comm.c`.
 
+### 7.5a TAP_CONFIG (32)
+
+- **Request:** `write`, `client_id` (0=lokal), `all_clients`, Multitap-Felder (`tap_sens_thres` … `enable_triple`).
+- **Write:** `bma456_set_tap_config` + NVS `tap_cfg` lokal; Slaves via `ESPNOW_SET_TAP_CONFIG`.
+- Boot: `pod_settings_apply_tap_config()` nach `init_bma456()`.
+
 ### 7.6 CACHE_STATUS (29)
 
 - **Request:** leer.
@@ -437,6 +445,7 @@ Aktivierbar mit `POWERPOD_BATTERY_UV_ENABLE` in `powerpod.h` (CMake-Override mö
 | Key | Inhalt |
 |-----|--------|
 | `accel_dz` | Accel-Deadzone LSB |
+| `tap_cfg` | BMA456 Multitap-Config (Blob) |
 | `uv_latch` | Software-UV-Zustand (`1` = Energiesparmodus) |
 
 Gespeichert bei lokalem Set (UART `client_id=0`, ESP-NOW auf Slave). Geladen nach `init_bma456()`.
@@ -492,6 +501,7 @@ Includes in generierten `.pb.c` müssen `"uart_messages.pb.h"` heißen (nicht `m
 | `cmd_client_info.c` | CLIENT_INFO |
 | `cmd_accel_deadzone.c` | ACCEL_DEADZONE |
 | `cmd_accel_stream.c` | ACCEL_STREAM |
+| `cmd_tap_config.c` | TAP_CONFIG |
 | `cmd_tap_notify.c` | TAP_NOTIFY |
 | `cmd_cache_status.c` | CACHE_STATUS |
 | `cmd_battery.c` | BATTERY_STATUS |