feat(led): 添加键盘LED状态管理模块

- 新增keyboard_led_state_event事件用于处理USB/BLE HID输出报告中的LED状态
- 实现led_state_module模块，管理Num Lock指示灯和BLE状态指示灯
- 定义LED状态效果映射，包括熄灭、常亮、慢闪、快闪等效果
- 将hid_keymap_def.h从configuration目录移至inc目录
- 在BLE和USB HID模块中添加对输出报告LED掩码的解析和处理
- 配置DTS中的led_1为可用状态，更新CMakeLists.txt构建配置

inc/hid_keymap_def.h

@@ -0,0 +1,43 @@
+/*
+ * HID keymap for current new_kbd numeric keypad layout.
+ * 说明：
+ * - 本文件仿照 nrf_desktop 的 hid_keymap_def.h 组织方式；
+ * - 仅由 keyboard_module.c 包含一次（通过 APP_HID_KEYMAP_DEF_PATH）；
+ * - 条目必须按 key_id 升序排列（按 KEY_ID(col, row) 计算后的数值顺序）。
+ */
+
+#include <caf/key_id.h>
+
+/*
+ * 防止该定义文件被多处 include 导致重复符号。
+ * 约定仅由 keyboard_module.c 包含一次。
+ */
+const struct {} hid_keymap_def_include_once;
+
+static const struct hid_keymap hid_keymap[] = {
+	/* col 0 */
+	{ KEY_ID(0, 1), 0x0053, REPORT_ID_KEYBOARD }, /* Num Lock */
+	{ KEY_ID(0, 2), 0x005F, REPORT_ID_KEYBOARD }, /* Keypad 7 */
+	{ KEY_ID(0, 3), 0x005C, REPORT_ID_KEYBOARD }, /* Keypad 4 */
+	{ KEY_ID(0, 4), 0x0059, REPORT_ID_KEYBOARD }, /* Keypad 1 */
+	{ KEY_ID(0, 5), 0x0062, REPORT_ID_KEYBOARD }, /* Keypad 0 */
+
+	/* col 1 */
+	{ KEY_ID(1, 1), 0x0054, REPORT_ID_KEYBOARD }, /* Keypad / */
+	{ KEY_ID(1, 2), 0x0060, REPORT_ID_KEYBOARD }, /* Keypad 8 */
+	{ KEY_ID(1, 3), 0x005D, REPORT_ID_KEYBOARD }, /* Keypad 5 */
+	{ KEY_ID(1, 4), 0x005A, REPORT_ID_KEYBOARD }, /* Keypad 2 */
+	{ KEY_ID(1, 5), 0x0063, REPORT_ID_KEYBOARD }, /* Keypad . */
+
+	/* col 2 */
+	{ KEY_ID(2, 1), 0x0055, REPORT_ID_KEYBOARD }, /* Keypad * */
+	{ KEY_ID(2, 2), 0x0061, REPORT_ID_KEYBOARD }, /* Keypad 9 */
+	{ KEY_ID(2, 3), 0x005E, REPORT_ID_KEYBOARD }, /* Keypad 6 */
+	{ KEY_ID(2, 4), 0x005B, REPORT_ID_KEYBOARD }, /* Keypad 3 */
+
+	/* col 3 */
+	{ KEY_ID(3, 0), 0x00E2, REPORT_ID_CONSUMER }, /* Mute */
+	{ KEY_ID(3, 1), 0x0056, REPORT_ID_KEYBOARD }, /* Keypad - */
+	{ KEY_ID(3, 3), 0x0057, REPORT_ID_KEYBOARD }, /* Keypad + */
+	{ KEY_ID(3, 5), 0x0058, REPORT_ID_KEYBOARD }, /* Keypad Enter */
+};

inc/led_state.h

@@ -0,0 +1,29 @@
+#ifndef NEW_KBD_LED_STATE_H__
+#define NEW_KBD_LED_STATE_H__
+
+#include <zephyr/types.h>
+
+/* 模块内系统状态：只用于本项目的 LED 映射，不对外暴露协议语义。 */
+enum led_ble_state {
+	LED_BLE_STATE_OFF = 0,
+	LED_BLE_STATE_WAIT_RECONNECT,
+	LED_BLE_STATE_PAIRING,
+	LED_BLE_STATE_CONNECTED,
+	LED_BLE_STATE_COUNT,
+};
+
+enum led_num_lock_state {
+	LED_NUM_LOCK_STATE_OFF = 0,
+	LED_NUM_LOCK_STATE_ON,
+	LED_NUM_LOCK_STATE_COUNT,
+};
+
+enum led_id_new_kbd {
+	LED_ID_NUM_LOCK = 0,
+	LED_ID_BLE_STATE,
+	LED_ID_COUNT,
+};
+
+#define LED_UNAVAILABLE 0xFF
+
+#endif /* NEW_KBD_LED_STATE_H__ */

inc/led_state_def.h

@@ -0,0 +1,39 @@
+#include "led_state.h"
+#include <caf/led_effect.h>
+
+/*
+ * 该文件仅被 led_state_module.c 包含一次，用于定义：
+ * 1) 逻辑 LED 到 CAF LED 实例编号映射；
+ * 2) 每个逻辑状态对应的 LED 效果。
+ */
+const struct {} led_state_def_include_once;
+
+/*
+ * CAF LED 实例编号来源于 DTS 中 status=okay 的 gpio-leds 顺序：
+ * - led_0 -> 0（Num Lock）
+ * - led_1 -> 1（BLE 状态）
+ */
+static const uint8_t led_map[LED_ID_COUNT] = {
+	[LED_ID_NUM_LOCK] = 0,
+	[LED_ID_BLE_STATE] = 1,
+};
+
+/* Num Lock 指示：灭=关闭，常亮=开启。 */
+static const struct led_effect led_num_lock_state_effect[LED_NUM_LOCK_STATE_COUNT] = {
+	[LED_NUM_LOCK_STATE_OFF] = LED_EFFECT_LED_OFF(),
+	[LED_NUM_LOCK_STATE_ON] = LED_EFFECT_LED_ON(LED_COLOR(255, 255, 255)),
+};
+
+/*
+ * BLE 指示灯策略：
+ * - OFF: 熄灭（USB 连接或 BLE 非活动模式）
+ * - WAIT_RECONNECT: 慢闪（1s toggle）
+ * - PAIRING: 快闪（0.5s toggle）
+ * - CONNECTED: 常亮
+ */
+static const struct led_effect led_ble_state_effect[LED_BLE_STATE_COUNT] = {
+	[LED_BLE_STATE_OFF] = LED_EFFECT_LED_OFF(),
+	[LED_BLE_STATE_WAIT_RECONNECT] = LED_EFFECT_LED_BLINK(1000, LED_COLOR(255, 255, 255)),
+	[LED_BLE_STATE_PAIRING] = LED_EFFECT_LED_BLINK(500, LED_COLOR(255, 255, 255)),
+	[LED_BLE_STATE_CONNECTED] = LED_EFFECT_LED_ON(LED_COLOR(255, 255, 255)),
+};