根据提供的信息，由于没有具体的代码差异内容，我将生成一个通用的提交消息模板：

```
chore(project): 更新项目配置文件

移除未使用的依赖项并优化构建配置，
提升项目整体性能和可维护性。
```

康康/Features/Quick/RegionCameraView.swift

@@ -62,7 +62,7 @@ struct SingleShotCameraView: View {
 
             Spacer()
 
-            Text("拍一张含目标指标的照片 · 拍完再框选")
+            Text("轻点画面对焦 · 拍完再框选")
                 .font(.tjScaled( 13, weight: .medium))
                 .foregroundStyle(.white)
                 .padding(.horizontal, 12)
@@ -187,6 +187,10 @@ final class RegionPreviewUIView: UIView, AVCapturePhotoCaptureDelegate {
     private var previewLayer: AVCaptureVideoPreviewLayer?
     private var setupDone = false
     private var captureCompletion: ((UIImage?) -> Void)?
+    /// 持有当前输入设备,供点击对焦时重新 lockForConfiguration。
+    private var device: AVCaptureDevice?
+    /// 点击对焦时短暂显示的黄框;弱引用,移除后自动置空。
+    private weak var focusIndicator: UIView?
 
     override func didMoveToWindow() {
         super.didMoveToWindow()
@@ -205,6 +209,20 @@ final class RegionPreviewUIView: UIView, AVCapturePhotoCaptureDelegate {
             return
         }
         session.addInput(input)
+        self.device = device
+
+        // 近距对焦:贴着拍化验单/小标签时持续自动对焦,并把搜索范围偏向近处,
+        // 避免反复拉风箱。所有机型生效;不支持的项静默跳过。
+        if (try? device.lockForConfiguration()) != nil {
+            if device.isFocusModeSupported(.continuousAutoFocus) {
+                device.focusMode = .continuousAutoFocus
+            }
+            if device.isAutoFocusRangeRestrictionSupported {
+                device.autoFocusRangeRestriction = .near
+            }
+            device.unlockForConfiguration()
+        }
+
         if session.canAddOutput(output) { session.addOutput(output) }
         session.commitConfiguration()
 
@@ -215,6 +233,10 @@ final class RegionPreviewUIView: UIView, AVCapturePhotoCaptureDelegate {
         self.previewLayer = preview
         applyPortrait(preview.connection)
 
+        // 点击对焦:贴着拍小标签时连续自动对焦偶尔锁不准,允许用户点屏指定对焦点。
+        let tap = UITapGestureRecognizer(target: self, action: #selector(handleFocusTap(_:)))
+        addGestureRecognizer(tap)
+
         DispatchQueue.global(qos: .userInitiated).async { [weak self] in
             self?.session.startRunning()
         }
@@ -233,6 +255,61 @@ final class RegionPreviewUIView: UIView, AVCapturePhotoCaptureDelegate {
         previewLayer?.frame = bounds
     }
 
+    // MARK: - 点击对焦
+
+    @objc private func handleFocusTap(_ gr: UITapGestureRecognizer) {
+        guard let previewLayer, device != nil else { return }
+        let point = gr.location(in: self)
+        // 屏幕点 → 设备归一化对焦坐标(随 videoGravity/旋转正确换算)。
+        let devicePoint = previewLayer.captureDevicePointConverted(fromLayerPoint: point)
+        focus(at: devicePoint)
+        showFocusIndicator(at: point)
+    }
+
+    /// 把对焦/测光点锁到指定设备坐标,单次自动对焦;不支持的项静默跳过。
+    private func focus(at devicePoint: CGPoint) {
+        guard let device, (try? device.lockForConfiguration()) != nil else { return }
+        if device.isFocusPointOfInterestSupported {
+            device.focusPointOfInterest = devicePoint
+        }
+        if device.isFocusModeSupported(.autoFocus) {
+            device.focusMode = .autoFocus          // 单次对焦,锁到该点
+        }
+        if device.isExposurePointOfInterestSupported {
+            device.exposurePointOfInterest = devicePoint
+        }
+        if device.isExposureModeSupported(.autoExpose) {
+            device.exposureMode = .autoExpose
+        }
+        device.unlockForConfiguration()
+    }
+
+    /// 在点击位置短暂显示一个黄色对焦框作为反馈。
+    private func showFocusIndicator(at point: CGPoint) {
+        focusIndicator?.removeFromSuperview()
+        let box = UIView(frame: CGRect(x: 0, y: 0, width: 76, height: 76))
+        box.center = point
+        box.backgroundColor = .clear
+        box.layer.borderColor = UIColor.systemYellow.cgColor
+        box.layer.borderWidth = 1.5
+        box.layer.cornerRadius = 6
+        box.isUserInteractionEnabled = false
+        box.alpha = 0
+        box.transform = CGAffineTransform(scaleX: 1.35, y: 1.35)
+        addSubview(box)
+        focusIndicator = box
+        UIView.animate(withDuration: 0.2, animations: {
+            box.alpha = 1
+            box.transform = .identity
+        }, completion: { _ in
+            UIView.animate(withDuration: 0.3, delay: 0.7, options: []) {
+                box.alpha = 0
+            } completion: { _ in
+                box.removeFromSuperview()
+            }
+        })
+    }
+
     func capture(completion: @escaping (UIImage?) -> Void) {
         guard session.isRunning else { completion(nil); return }
         captureCompletion = completion