Add instant payment collection flow aligned with Android.

Implement收款详情与收款记录 pages with pay-code API, QR generation, amount setting, and record grouping so merchants can collect payments from the home quick action.

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

suixinkan/Features/Payment/ViewModels/PaymentCollectionRecordViewModel.swift

@@ -0,0 +1,61 @@
+//
+//  PaymentCollectionRecordViewModel.swift
+//  suixinkan
+//
+
+import Foundation
+
+/// 收款记录 ViewModel，拉取近 7 天记录并按日分组展示。
+final class PaymentCollectionRecordViewModel {
+
+    private(set) var loading = false
+    private(set) var groups: [RepaymentCollectionRecordGroup] = []
+
+    var onStateChange: (() -> Void)?
+
+    private let appStore: AppStore
+
+    init(appStore: AppStore = .shared) {
+        self.appStore = appStore
+    }
+
+    func loadRecord(api: PaymentAPI) async {
+        guard !loading else { return }
+        loading = true
+        notifyStateChange()
+        defer {
+            loading = false
+            notifyStateChange()
+        }
+
+        let scenicId = appStore.currentScenicId
+        guard scenicId > 0 else {
+            groups = []
+            return
+        }
+
+        do {
+            let response = try await api.collectionRecord(scenicId: scenicId)
+            groups = PaymentRecordGrouper.group(response: response)
+        } catch {
+            groups = []
+        }
+    }
+
+    private func notifyStateChange() {
+        onStateChange?()
+    }
+}
+
+/// 收款记录分组逻辑，对齐 Android `PaymentCollectionRecordViewModel.getRecord`。
+enum PaymentRecordGrouper {
+    static func group(response: RepaymentCollectionRecordResponse) -> [RepaymentCollectionRecordGroup] {
+        let mapByDate = Dictionary(grouping: response.list, by: \.createDate)
+        return response.analyse.map { analyseItem in
+            RepaymentCollectionRecordGroup(
+                analyse: analyseItem,
+                items: mapByDate[analyseItem.date] ?? []
+            )
+        }
+    }
+}