feat: support 17-byte ADC status from updated vendor protocol

Protocol update adds FFE4 Status format: 7×PD sensors (little-endian)
+ VBAT battery voltage (mV) + XOR checksum = 17 bytes.

- parseVendorStatus: handles 1-byte heartbeat, 17-byte ADC, 33-byte params
- handleValueChange: ADC type extracts PD array + battery % from VBAT
- Battery calculated as linear 3000mV(0%) to 4200mV(100%)
- PD data passed through status event for treatment pages
- Updated protocol doc with full byte table and old/new comparison

miniprogram/services/ble/connection.js

@@ -85,11 +85,33 @@ function handleValueChange(res) {
   if (protocol.PROTOCOL_MODE === 'vendor_33') {
     var parsed = protocol.parseVendorStatus(res.value)
     emit('vendor_raw', parsed)
-    if (parsed.is_heartbeat) {
+
+    if (parsed.type === 'heartbeat') {
       emit('heartbeat', { value: parsed.heartbeat })
       return
     }
-    if (parsed.ios) {
+
+    if (parsed.type === 'adc') {
+      var vbatMv = parsed.vbat
+      var batteryPct = Math.min(100, Math.max(0, Math.round((vbatMv - 3000) / (4200 - 3000) * 100)))
+      emit('status', {
+        mode_state: protocol.MODE_STATE.ACTIVE,
+        region_mask: protocol.REGION.FULL_FACE,
+        wavelength: 0,
+        brightness: 0,
+        remaining_ms: 0,
+        error_code: 0,
+        battery: batteryPct,
+        temperature: 0,
+        bind_status: 1,
+        subscription: 1,
+        pd: parsed.pd,
+        vbat: vbatMv
+      })
+      return
+    }
+
+    if (parsed.type === 'params' && parsed.ios) {
       var anyActive = false
       for (var i = 0; i < parsed.ios.length; i++) {
         if (parsed.ios[i].red || parsed.ios[i].infrared || parsed.ios[i].uv || parsed.ios[i].warm_yellow) {