Add scenic application flow aligned with Android.

Implement scenic apply models, API, upload, UI, and tests; wire entry from permission apply pages and include related permission/scenic selection UI fixes.

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

suixinkanTests/ScenicApplicationViewModelTests.swift

@@ -0,0 +1,107 @@
+//
+//  ScenicApplicationViewModelTests.swift
+//  suixinkanTests
+//
+
+import XCTest
+@testable import suixinkan
+
+@MainActor
+/// 景区申请 ViewModel 测试。
+final class ScenicApplicationViewModelTests: XCTestCase {
+
+    func testCanSubmitRequiresRequiredFields() {
+        let viewModel = ScenicApplicationViewModel()
+        XCTAssertFalse(viewModel.canSubmit)
+
+        viewModel.onProvinceSelected("浙江省")
+        viewModel.onCitySelected("杭州市")
+        viewModel.onRemarksChange("合作备注")
+        XCTAssertFalse(viewModel.canSubmit)
+
+        viewModel.toggleAgreement()
+        XCTAssertTrue(viewModel.canSubmit)
+    }
+
+    func testRemarksMaxLengthShowsMessage() {
+        let viewModel = ScenicApplicationViewModel()
+        var message: String?
+        viewModel.onShowMessage = { message = $0 }
+
+        let longText = String(repeating: "a", count: 51)
+        viewModel.onRemarksChange(longText)
+
+        XCTAssertEqual(viewModel.remarks.count, 0)
+        XCTAssertEqual(message, "备注信息最多50字")
+    }
+
+    func testProvinceSelectionClearsCity() {
+        let viewModel = ScenicApplicationViewModel()
+        viewModel.onProvinceSelected("浙江省")
+        viewModel.onCitySelected("杭州市")
+        XCTAssertEqual(viewModel.selectedCity, "杭州市")
+
+        viewModel.onProvinceSelected("江苏省")
+        XCTAssertEqual(viewModel.selectedProvince, "江苏省")
+        XCTAssertEqual(viewModel.selectedCity, "")
+    }
+
+    func testInitWithPendingApplicationStatus1() async throws {
+        let pendingJSON = """
+        {"code":100000,"msg":"success","data":{"items":[{"id":1,"scenic_name":"测试景区","scenic_images":"https://a.com/1.jpg,https://a.com/2.jpg","scenic_province":"浙江省","scenic_city":"杭州市","coop_type":2,"remark":"备注","status":1}]}}
+        """.data(using: .utf8)!
+        let areasJSON = """
+        {"code":100000,"msg":"success","data":[{"id":1,"name":"浙江省","children":[{"id":2,"name":"杭州市"}]}]}
+        """.data(using: .utf8)!
+        let homeAPI = HomeAPI(client: APIClient(environment: .testing, session: MockURLSession(responses: [pendingJSON])))
+        let profileAPI = ProfileAPI(client: APIClient(environment: .testing, session: MockURLSession(responses: [areasJSON])))
+        let viewModel = ScenicApplicationViewModel()
+
+        await viewModel.loadAreas(profileAPI: profileAPI)
+        await viewModel.loadPendingApplication(homeAPI: homeAPI)
+
+        XCTAssertEqual(viewModel.scenicName, "测试景区")
+        XCTAssertEqual(viewModel.selectedProvince, "浙江省")
+        XCTAssertEqual(viewModel.selectedCity, "杭州市")
+        XCTAssertEqual(viewModel.selectedCooperationType, .resourceProvider)
+        XCTAssertEqual(viewModel.remarks, "备注")
+        XCTAssertEqual(viewModel.selectedImages.count, 2)
+        XCTAssertTrue(viewModel.isReadOnly)
+        XCTAssertTrue(viewModel.shouldShowAuditCard)
+    }
+
+    func testSubmitValidationShowsIncompleteMessage() async {
+        let api = HomeAPI(client: APIClient(environment: .testing, session: MockURLSession(responses: [])))
+        let viewModel = ScenicApplicationViewModel()
+        var message: String?
+        viewModel.onShowMessage = { message = $0 }
+
+        await viewModel.submit(homeAPI: api)
+        XCTAssertEqual(message, "请完善必填信息")
+    }
+
+    func testSubmitSuccessCallsCallback() async throws {
+        let submitJSON = """
+        {"code":100000,"msg":"success","data":{}}
+        """.data(using: .utf8)!
+        let pendingJSON = """
+        {"code":100000,"msg":"success","data":{"items":[]}}
+        """.data(using: .utf8)!
+        let api = HomeAPI(client: APIClient(environment: .testing, session: MockURLSession(responses: [submitJSON, pendingJSON])))
+        let viewModel = ScenicApplicationViewModel()
+        viewModel.onProvinceSelected("浙江省")
+        viewModel.onCitySelected("杭州市")
+        viewModel.onRemarksChange("合作")
+        viewModel.toggleAgreement()
+
+        var didSubmit = false
+        viewModel.onSubmitSuccess = { didSubmit = true }
+        var messages: [String] = []
+        viewModel.onShowMessage = { messages.append($0) }
+
+        await viewModel.submit(homeAPI: api)
+
+        XCTAssertTrue(didSubmit)
+        XCTAssertEqual(messages.first, "提交成功")
+    }
+}