fix(battery): detect TP4056 charging and full states on new board

components/platform/include/platform.h

@@ -403,22 +403,25 @@ void platform_power_release_deep_sleep_holds(void);
 esp_err_t platform_power_enter_deep_sleep(int charger_gpio, int button_gpio);
 
 /* platform 只报告原始充电和电压质量，电量等级/SOC 语义由 domain 层计算。 */
-typedef enum {
-    PLATFORM_BATTERY_CHARGE_UNKNOWN = 0,
-    PLATFORM_BATTERY_CHARGE_NOT_CHARGING,
-    PLATFORM_BATTERY_CHARGE_CHARGING,
-} platform_battery_charge_state_t;
+/* 板级数字输入原始电平；电平组合含义及去抖由 domain 唯一解释。 */
+typedef struct {
+    int charge_level;
+    int full_level;
+    bool valid;
+} platform_battery_charge_inputs_t;
+
+/** 读取两路原始电平；无 ADC 访问，互斥等待最多100ms。 */
+esp_err_t platform_battery_read_charge_inputs(platform_battery_charge_inputs_t *out_inputs);
 
 typedef struct {
     int adc_voltage_mv;
     int voltage_mv;
-    platform_battery_charge_state_t charge_state;
     bool voltage_valid;
     bool high_load_active;
     bool cooldown_active;
 } platform_battery_sample_t;
 
-/** 幂等初始化电池 ADC 和 TP4057 状态输入。 / Idempotently initialize battery sensing. */
+/** 幂等初始化电池 ADC 和 TP4056 两路状态输入。 / Idempotently initialize battery sensing. */
 esp_err_t platform_battery_init(void);
 
 /**