接入微信分享 SDK 并配置 Universal Link。

集成 WechatOpenSDK、www.zhifly.cn/suixinkan/ 通用链接与邀请页分享能力，附带 AASA 部署文件与单元测试。

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

suixinkan/Features/Invite/Invite.md

@@ -12,6 +12,8 @@ Invite 模块负责首页 `registration_invitation`、`photographer_invite` 和
 
 复制邀请链接时只由 View 层写入剪贴板，ViewModel 不关心系统剪贴板状态。
 
+点击「分享」弹出 `WeChatShareSheet`，支持分享到微信好友、朋友圈；未安装微信时走系统分享兜底。分享网页使用 `WeChatShareService.shareWebPage`，缩略图优先使用邀请二维码。
+
 ## 邀请记录
 
 `InviteRecordViewModel` 提供“邀请记录 / 奖励记录”分段：

suixinkan/Features/Invite/Views/InviteViews.swift

@@ -13,6 +13,7 @@ struct PhotographerInviteView: View {
     @EnvironmentObject private var toastCenter: ToastCenter
     @Environment(\.globalLoading) private var globalLoading
     @StateObject private var viewModel = PhotographerInviteViewModel()
+    @State private var isPresentingShareSheet = false
 
     var body: some View {
         ScrollView {
@@ -37,6 +38,17 @@ struct PhotographerInviteView: View {
         .navigationBarTitleDisplayMode(.inline)
         .task { await reload(showLoading: true) }
         .refreshable { await reload(showLoading: false) }
+        .sheet(isPresented: $isPresentingShareSheet) {
+            WeChatShareSheet(
+                title: "邀请你加入随心瞰商家版",
+                description: viewModel.inviteCode.isEmpty ? "摄影师邀请" : "邀请码：\(viewModel.inviteCode)",
+                url: viewModel.inviteUrl,
+                thumbImage: viewModel.qrImage
+            ) { message in
+                toastCenter.show(message)
+            }
+            .presentationDetents([.medium])
+        }
     }
 
     private var inviteCard: some View {
@@ -77,8 +89,11 @@ struct PhotographerInviteView: View {
                         .frame(height: 44)
                 }
                 Button {
-                    viewModel.copyInviteUrl()
-                    toastCenter.show("链接已复制，可粘贴分享")
+                    guard !viewModel.inviteUrl.isEmpty else {
+                        toastCenter.show("邀请链接加载中，请稍后重试")
+                        return
+                    }
+                    isPresentingShareSheet = true
                 } label: {
                     Label("分享", systemImage: "square.and.arrow.up")
                         .frame(maxWidth: .infinity)