fix: 片头动画改为用户触发而非自动播放

- OpeningFlowController: Start() 不再自动播放动画，新增 PlayOpeningFlow(Action onComplete) 公开方法
- PageController: OnFixationSelected() 先隐藏所有UI面板，调用 PlayOpeningFlow，动画结束后再显示 ExperimentPanel
- 新增 HideAllPages() 方法用于片头动画期间清空UI
- 所有按钮回调均保留 Debug.Log 输出

Assets/Models/Characters/Man/manNoShouse.fbm/manNoShouse_Body_normal.png.meta

@@ -7,7 +7,7 @@ TextureImporter:
   mipmaps:
     mipMapMode: 0
     enableMipMap: 1
-    sRGBTexture: 1
+    sRGBTexture: 0
     linearTexture: 0
     fadeOut: 0
     borderMipMap: 0
@@ -54,7 +54,7 @@ TextureImporter:
   alphaUsage: 1
   alphaIsTransparency: 0
   spriteTessellationDetail: -1
-  textureType: 0
+  textureType: 1
   textureShape: 1
   singleChannelComponent: 0
   flipbookRows: 1

Assets/Models/Characters/Man/manNoShouse.fbm/manNoShouse_Bottom_normal.png.meta

@@ -7,7 +7,7 @@ TextureImporter:
   mipmaps:
     mipMapMode: 0
     enableMipMap: 1
-    sRGBTexture: 1
+    sRGBTexture: 0
     linearTexture: 0
     fadeOut: 0
     borderMipMap: 0
@@ -54,7 +54,7 @@ TextureImporter:
   alphaUsage: 1
   alphaIsTransparency: 0
   spriteTessellationDetail: -1
-  textureType: 0
+  textureType: 1
   textureShape: 1
   singleChannelComponent: 0
   flipbookRows: 1

Assets/Models/Characters/Man/manNoShouse.fbm/manNoShouse_Hair_normal.png.meta

@@ -7,7 +7,7 @@ TextureImporter:
   mipmaps:
     mipMapMode: 0
     enableMipMap: 1
-    sRGBTexture: 1
+    sRGBTexture: 0
     linearTexture: 0
     fadeOut: 0
     borderMipMap: 0
@@ -54,7 +54,7 @@ TextureImporter:
   alphaUsage: 1
   alphaIsTransparency: 0
   spriteTessellationDetail: -1
-  textureType: 0
+  textureType: 1
   textureShape: 1
   singleChannelComponent: 0
   flipbookRows: 1

Assets/Models/Characters/Man/manNoShouse.fbm/manNoShouse_Top_normal.png.meta

@@ -7,7 +7,7 @@ TextureImporter:
   mipmaps:
     mipMapMode: 0
     enableMipMap: 1
-    sRGBTexture: 1
+    sRGBTexture: 0
     linearTexture: 0
     fadeOut: 0
     borderMipMap: 0
@@ -54,7 +54,7 @@ TextureImporter:
   alphaUsage: 1
   alphaIsTransparency: 0
   spriteTessellationDetail: -1
-  textureType: 0
+  textureType: 1
   textureShape: 1
   singleChannelComponent: 0
   flipbookRows: 1

Assets/Models/Characters/Man/man_no_plank_output_2.3.fbx.meta

@@ -0,0 +1,109 @@
+fileFormatVersion: 2
+guid: de613ce19d622422abbb9e2d63dc7ec6
+ModelImporter:
+  serializedVersion: 22200
+  internalIDToNameTable: []
+  externalObjects: {}
+  materials:
+    materialImportMode: 2
+    materialName: 0
+    materialSearch: 1
+    materialLocation: 1
+  animations:
+    legacyGenerateAnimations: 4
+    bakeSimulation: 0
+    resampleCurves: 1
+    optimizeGameObjects: 0
+    removeConstantScaleCurves: 0
+    motionNodeName: 
+    rigImportErrors: 
+    rigImportWarnings: 
+    animationImportErrors: 
+    animationImportWarnings: 
+    animationRetargetingWarnings: 
+    animationDoRetargetingWarnings: 0
+    importAnimatedCustomProperties: 0
+    importConstraints: 0
+    animationCompression: 1
+    animationRotationError: 0.5
+    animationPositionError: 0.5
+    animationScaleError: 0.5
+    animationWrapMode: 0
+    extraExposedTransformPaths: []
+    extraUserProperties: []
+    clipAnimations: []
+    isReadable: 0
+  meshes:
+    lODScreenPercentages: []
+    globalScale: 1
+    meshCompression: 0
+    addColliders: 0
+    useSRGBMaterialColor: 1
+    sortHierarchyByName: 1
+    importPhysicalCameras: 1
+    importVisibility: 1
+    importBlendShapes: 1
+    importCameras: 1
+    importLights: 1
+    nodeNameCollisionStrategy: 1
+    fileIdsGeneration: 2
+    swapUVChannels: 0
+    generateSecondaryUV: 0
+    useFileUnits: 1
+    keepQuads: 0
+    weldVertices: 1
+    bakeAxisConversion: 0
+    preserveHierarchy: 0
+    skinWeightsMode: 0
+    maxBonesPerVertex: 4
+    minBoneWeight: 0.001
+    optimizeBones: 1
+    meshOptimizationFlags: -1
+    indexFormat: 0
+    secondaryUVAngleDistortion: 8
+    secondaryUVAreaDistortion: 15.000001
+    secondaryUVHardAngle: 88
+    secondaryUVMarginMethod: 1
+    secondaryUVMinLightmapResolution: 40
+    secondaryUVMinObjectScale: 1
+    secondaryUVPackMargin: 4
+    useFileScale: 1
+    strictVertexDataChecks: 0
+  tangentSpace:
+    normalSmoothAngle: 60
+    normalImportMode: 0
+    tangentImportMode: 3
+    normalCalculationMode: 4
+    legacyComputeAllNormalsFromSmoothingGroupsWhenMeshHasBlendShapes: 0
+    blendShapeNormalImportMode: 1
+    normalSmoothingSource: 0
+  referencedClips: []
+  importAnimation: 1
+  humanDescription:
+    serializedVersion: 3
+    human: []
+    skeleton: []
+    armTwist: 0.5
+    foreArmTwist: 0.5
+    upperLegTwist: 0.5
+    legTwist: 0.5
+    armStretch: 0.05
+    legStretch: 0.05
+    feetSpacing: 0
+    globalScale: 1
+    rootMotionBoneName: 
+    hasTranslationDoF: 0
+    hasExtraRoot: 0
+    skeletonHasParents: 1
+  lastHumanDescriptionAvatarSource: {instanceID: 0}
+  autoGenerateAvatarMappingIfUnspecified: 1
+  animationType: 2
+  humanoidOversampling: 1
+  avatarSetup: 0
+  addHumanoidExtraRootOnlyWhenUsingAvatar: 1
+  importBlendShapeDeformPercent: 1
+  remapMaterialsIfMaterialImportModeIsNone: 0
+  additionalBone: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: