Add scenic selection and cooperation order flows aligned with Android.

Upgrade scenic picker with search, location sorting, permission apply/status, and blocking home dialog; add cooperation order module and order source picker improvements with unit tests.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/UI/CooperationOrder/ImagePreviewViewController.swift

@@ -0,0 +1,102 @@
+//
+//  ImagePreviewViewController.swift
+//  suixinkan
+//
+
+import SnapKit
+import UIKit
+
+/// 图片全屏预览，对齐 Android `MediaPreviewDialog`。
+final class ImagePreviewViewController: UIViewController {
+
+    private let imageURLs: [String]
+    private let startIndex: Int
+    private let scrollView = UIScrollView()
+    private let pageControl = UIPageControl()
+
+    init(imageURLs: [String], startIndex: Int) {
+        self.imageURLs = imageURLs
+        self.startIndex = min(max(0, startIndex), max(0, imageURLs.count - 1))
+        super.init(nibName: nil, bundle: nil)
+        modalPresentationStyle = .fullScreen
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        view.backgroundColor = .black
+
+        scrollView.isPagingEnabled = true
+        scrollView.showsHorizontalScrollIndicator = false
+        scrollView.delegate = self
+
+        pageControl.numberOfPages = imageURLs.count
+        pageControl.currentPage = startIndex
+        pageControl.isHidden = imageURLs.count <= 1
+
+        let closeButton = UIButton(type: .system)
+        closeButton.setImage(UIImage(systemName: "xmark"), for: .normal)
+        closeButton.tintColor = .white
+        closeButton.addTarget(self, action: #selector(closeTapped), for: .touchUpInside)
+
+        view.addSubview(scrollView)
+        view.addSubview(pageControl)
+        view.addSubview(closeButton)
+
+        scrollView.snp.makeConstraints { make in
+            make.edges.equalToSuperview()
+        }
+        pageControl.snp.makeConstraints { make in
+            make.bottom.equalTo(view.safeAreaLayoutGuide).inset(AppSpacing.md)
+            make.centerX.equalToSuperview()
+        }
+        closeButton.snp.makeConstraints { make in
+            make.top.equalTo(view.safeAreaLayoutGuide).offset(AppSpacing.sm)
+            make.trailing.equalToSuperview().inset(AppSpacing.md)
+            make.size.equalTo(AppSpacing.minTouchTarget)
+        }
+
+        imageURLs.enumerated().forEach { index, url in
+            let imageView = UIImageView()
+            imageView.contentMode = .scaleAspectFit
+            imageView.loadRemoteImage(urlString: url, placeholderColor: .darkGray)
+            scrollView.addSubview(imageView)
+            imageView.snp.makeConstraints { make in
+                make.top.bottom.equalToSuperview()
+                make.width.equalTo(view.snp.width)
+                make.height.equalTo(view.snp.height)
+                make.leading.equalToSuperview().offset(CGFloat(index) * view.bounds.width)
+            }
+        }
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        scrollView.contentSize = CGSize(width: view.bounds.width * CGFloat(imageURLs.count), height: view.bounds.height)
+        scrollView.setContentOffset(CGPoint(x: view.bounds.width * CGFloat(startIndex), y: 0), animated: false)
+        scrollView.subviews.enumerated().forEach { index, subview in
+            subview.frame = CGRect(
+                x: view.bounds.width * CGFloat(index),
+                y: 0,
+                width: view.bounds.width,
+                height: view.bounds.height
+            )
+        }
+    }
+
+    @objc private func closeTapped() {
+        dismiss(animated: true)
+    }
+}
+
+extension ImagePreviewViewController: UIScrollViewDelegate {
+    func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        guard view.bounds.width > 0 else { return }
+        let page = Int(round(scrollView.contentOffset.x / view.bounds.width))
+        pageControl.currentPage = page
+    }
+}