更新超广角相机的变焦比例，确保在相机能力允许的情况下使用0.6x的缩放比例，优化相关UI和测试用例。

android/app/src/main/kotlin/com/dronex/rec/recording/RecordingCameraController.kt

@@ -32,6 +32,7 @@ class RecordingCameraController(
     private var camera: Camera? = null
     private var mainCameraId: String? = null
     private var ultraWideCameraId: String? = null
+    private var ultraWideZoomRatio: Float = DEFAULT_ULTRA_WIDE_ZOOM_RATIO
     private var currentLensMode: LensMode = LensMode.MAIN
     private var activeRecording: Recording? = null
     private var boundLifecycleOwner: LifecycleOwner? = null
@@ -224,11 +225,16 @@ class RecordingCameraController(
 
     fun zoomCapabilitiesMap(): Map<String, Any> {
         val zoomState = camera?.cameraInfo?.zoomState?.value
-        val minZoom = if (hasUltraWideCamera()) 0.5f else (zoomState?.minZoomRatio ?: 1f)
+        val minZoom =
+                if (hasUltraWideCamera()) {
+                    ultraWideZoomRatio
+                } else {
+                    zoomState?.minZoomRatio ?: 1f
+                }
         val maxZoom = zoomState?.maxZoomRatio ?: 3f
         val zoom =
                 if (currentLensMode == LensMode.ULTRA_WIDE) {
-                    0.5f
+                    ultraWideZoomRatio
                 } else {
                     (zoomState?.zoomRatio ?: currentZoomRatio).coerceIn(minZoom, maxZoom)
                 }
@@ -248,7 +254,7 @@ class RecordingCameraController(
         if (boundCamera == null) {
             val clamped =
                     if (ratio < 1.0 && hasUltraWideCamera()) {
-                        0.5f
+                        ultraWideZoomRatio
                     } else {
                         ratio.toFloat().coerceAtLeast(1f)
                     }
@@ -299,6 +305,7 @@ class RecordingCameraController(
         boundLifecycleOwner = null
         currentLensMode = LensMode.MAIN
         currentZoomRatio = 1f
+        ultraWideZoomRatio = DEFAULT_ULTRA_WIDE_ZOOM_RATIO
         updateStatus(RecordingStatus(RecordingState.IDLE))
     }
 
@@ -315,7 +322,7 @@ class RecordingCameraController(
     private fun applyCurrentZoom() {
         val boundCamera = camera ?: return
         if (currentLensMode == LensMode.ULTRA_WIDE) {
-            currentZoomRatio = 0.5f
+            currentZoomRatio = ultraWideZoomRatio
             boundCamera.cameraControl.setZoomRatio(1f)
             return
         }
@@ -334,12 +341,18 @@ class RecordingCameraController(
         if (mainCameraId == null) {
             mainCameraId = cameraIdForSelector(provider, CameraSelector.DEFAULT_BACK_CAMERA)
         }
-        ultraWideCameraId = findUltraWideCameraId(provider, mainCameraId)
-        if (ultraWideCameraId == null && currentLensMode == LensMode.ULTRA_WIDE) {
+        val ultraWideCamera = findUltraWideCamera(provider, mainCameraId)
+        ultraWideCameraId = ultraWideCamera?.cameraId
+        ultraWideZoomRatio = ultraWideCamera?.zoomRatio ?: DEFAULT_ULTRA_WIDE_ZOOM_RATIO
+        if (ultraWideCamera == null && currentLensMode == LensMode.ULTRA_WIDE) {
             currentLensMode = LensMode.MAIN
             currentZoomRatio = 1f
         }
-        Log.d(TAG, "mainCameraId=$mainCameraId ultraWideCameraId=$ultraWideCameraId")
+        Log.d(
+                TAG,
+                "mainCameraId=$mainCameraId ultraWideCameraId=$ultraWideCameraId " +
+                        "ultraWideZoomRatio=$ultraWideZoomRatio",
+        )
     }
 
     private fun cameraIdForSelector(
@@ -355,10 +368,10 @@ class RecordingCameraController(
         }
     }
 
-    private fun findUltraWideCameraId(
+    private fun findUltraWideCamera(
             provider: ProcessCameraProvider,
             excludedCameraId: String?,
-    ): String? {
+    ): UltraWideCamera? {
         val manager = appContext.getSystemService(Context.CAMERA_SERVICE) as CameraManager
         val candidates =
                 manager.cameraIdList
@@ -373,13 +386,17 @@ class RecordingCameraController(
         val mainProfile = excludedCameraId?.let { backCameraProfile(manager, it) }
         val widest = candidates.firstOrNull() ?: return null
         if (mainProfile == null) {
-            return widest.cameraId
+            return UltraWideCamera(widest.cameraId, DEFAULT_ULTRA_WIDE_ZOOM_RATIO)
         }
 
         val meaningfullyWider =
                 widest.horizontalFov > mainProfile.horizontalFov * ULTRA_WIDE_FOV_FACTOR ||
                         widest.minFocalLength < mainProfile.minFocalLength * ULTRA_WIDE_FOCAL_FACTOR
-        return if (meaningfullyWider) widest.cameraId else null
+        if (!meaningfullyWider) {
+            return null
+        }
+
+        return UltraWideCamera(widest.cameraId, DEFAULT_ULTRA_WIDE_ZOOM_RATIO)
     }
 
     private fun backCameraProfile(
@@ -457,7 +474,7 @@ class RecordingCameraController(
             return
         }
         if (currentLensMode == LensMode.ULTRA_WIDE) {
-            currentZoomRatio = 0.5f
+            currentZoomRatio = ultraWideZoomRatio
             onComplete(true, zoomCapabilitiesMap(), null)
             return
         }
@@ -473,7 +490,7 @@ class RecordingCameraController(
         }
         try {
             currentLensMode = LensMode.ULTRA_WIDE
-            currentZoomRatio = 0.5f
+            currentZoomRatio = ultraWideZoomRatio
             bindUseCases(provider, lifecycleOwner, selectorForCameraId(ultraWideId))
             applyCurrentZoom()
             onComplete(true, zoomCapabilitiesMap(), null)
@@ -539,8 +556,14 @@ class RecordingCameraController(
             val horizontalFov: Double,
     )
 
+    private data class UltraWideCamera(
+            val cameraId: String,
+            val zoomRatio: Float,
+    )
+
     companion object {
         private const val TAG = "RecordingCamera"
+        private const val DEFAULT_ULTRA_WIDE_ZOOM_RATIO = 0.6f
         private const val ULTRA_WIDE_FOV_FACTOR = 1.08
         private const val ULTRA_WIDE_FOCAL_FACTOR = 0.92
     }