style: 电量和闪电显示在电池图标内部

- 电池图标加大 28×13 → 38×16，内部空间足够放文字
- 正常时电池内显示百分比数字（如 73）
- 充电时电池内显示 ⚡ 闪电符号
- 去掉电池外部的百分比文字，信息集中在图标上

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/src/main/java/com/xiaoqu/watch/ui/widget/StatusBarView.kt

@@ -48,9 +48,8 @@ class StatusBarView @JvmOverloads constructor(
         drawSignalBars(canvas, 22f, centerY)
 
         // ===== 右侧：电池图标（固定位置）+ 电量百分比（电池左侧） =====
-        val batteryStartX = width - 48f
+        val batteryStartX = width - 50f
         drawBattery(canvas, batteryStartX, centerY)
-        drawBatteryText(canvas, batteryStartX - 4f, centerY)
     }
 
     /** 绘制蓝牙状态圆点 */
@@ -88,29 +87,14 @@ class StatusBarView @JvmOverloads constructor(
         else -> colorGreen
     }
 
-    /** 绘制电量百分比文字（电池图标左侧） */
-    private fun drawBatteryText(canvas: Canvas, rightEdge: Float, centerY: Float) {
-        if (batteryLevel < 0) return  // 未获取时不显示
-        // 充电时显示 ⚡ 前缀
-        val text = if (isCharging) "⚡${batteryLevel}%" else "${batteryLevel}%"
-        paint.style = Paint.Style.FILL
-        paint.color = getBatteryColor()
-        paint.textSize = 18f
-        paint.textAlign = Paint.Align.RIGHT
-        val metrics = paint.fontMetrics
-        val baselineY = centerY - (metrics.ascent + metrics.descent) / 2
-        canvas.drawText(text, rightEdge, baselineY, paint)
-        paint.textAlign = Paint.Align.LEFT
-    }
-
-    /** 绘制电池图标（壳 + 填充条 + 凸起） */
+    /** 绘制电池图标（壳 + 填充条 + 凸起 + 内部文字/闪电） */
     private fun drawBattery(canvas: Canvas, startX: Float, centerY: Float) {
-        val shellW = 28f
-        val shellH = 13f
+        val shellW = 38f
+        val shellH = 16f
         val shellTop = centerY - shellH / 2
-        val cornerR = 3.5f
+        val cornerR = 4f
 
-        // 电池壳边框（颜色跟随状态）
+        // 电池壳边框
         paint.style = Paint.Style.STROKE
         paint.strokeWidth = 1.5f
         paint.color = if (batteryLevel <= 10 && !isCharging) colorRed else colorBorder
@@ -131,17 +115,37 @@ class StatusBarView @JvmOverloads constructor(
         )
         canvas.drawRoundRect(fillRect, 2f, 2f, paint)
 
+        // 电池内部文字：充电时显示 ⚡，否则显示百分比
+        if (batteryLevel >= 0) {
+            val text = if (isCharging) "⚡" else "${batteryLevel}"
+            paint.style = Paint.Style.FILL
+            paint.color = 0xFFFFFFFF.toInt()
+            paint.textSize = 11f
+            paint.textAlign = Paint.Align.CENTER
+            paint.typeface = android.graphics.Typeface.DEFAULT_BOLD
+            val metrics = paint.fontMetrics
+            val baselineY = centerY - (metrics.ascent + metrics.descent) / 2
+            canvas.drawText(text, startX + shellW / 2, baselineY, paint)
+            paint.textAlign = Paint.Align.LEFT
+            paint.typeface = android.graphics.Typeface.DEFAULT
+        }
+
         // 电池凸起（右侧小矩形）
         paint.color = if (batteryLevel <= 10 && !isCharging) colorRed else colorBorder
-        val nubW = 2.5f
-        val nubH = 6f
+        val nubW = 3f
+        val nubH = 7f
         val nubRect = RectF(
             startX + shellW + 1f,
             centerY - nubH / 2,
             startX + shellW + 1f + nubW,
             centerY + nubH / 2
         )
-        canvas.drawRoundRect(nubRect, 1f, 1f, paint)
+        canvas.drawRoundRect(nubRect, 1.5f, 1.5f, paint)
+    }
+
+    /** 不再单独绘制电量文字（已合入电池图标内部） */
+    private fun drawBatteryText(canvas: Canvas, rightEdge: Float, centerY: Float) {
+        // 电量数字已显示在电池内部，无需额外文字
     }
 
     // ===== 更新方法 =====