新增完整 UI Test 回归套件，并完善启动隔离逻辑。

按模块拆分 XCUITest 用例与 Support 基础设施，UI Test 运行时跳过推送与排队 WebSocket，并将 Podfile 最低版本对齐 iOS 16。

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

suixinkanUITests/Support/NavigationAssertions.swift

@@ -0,0 +1,74 @@
+//
+//  NavigationAssertions.swift
+//  suixinkanUITests
+//
+//  Created by Codex on 2026/6/26.
+//
+
+import XCTest
+
+/// 页面导航与可见性断言工具。
+enum NavigationAssertions {
+    /// 等待导航栏标题出现。
+    @discardableResult
+    static func waitForNavigationTitle(
+        _ title: String,
+        in app: SuixinkanApp,
+        timeout: TimeInterval = 12,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> Bool {
+        let navigationBar = app.application.navigationBars[title]
+        let exists = navigationBar.waitForExistence(timeout: timeout)
+        XCTAssertTrue(exists, "未找到导航标题：\(title)", file: file, line: line)
+        return exists
+    }
+
+    /// 等待任意一个导航标题出现。
+    @discardableResult
+    static func waitForAnyNavigationTitle(
+        _ titles: [String],
+        in app: SuixinkanApp,
+        timeout: TimeInterval = 12,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> String? {
+        let deadline = Date().addingTimeInterval(timeout)
+        while Date() < deadline {
+            for title in titles {
+                if app.application.navigationBars[title].exists {
+                    return title
+                }
+            }
+            RunLoop.current.run(until: Date().addingTimeInterval(0.2))
+        }
+
+        XCTFail("未找到任一导航标题：\(titles.joined(separator: " / "))", file: file, line: line)
+        return nil
+    }
+
+    /// 等待静态文案出现。
+    @discardableResult
+    static func waitForStaticText(
+        _ text: String,
+        in app: SuixinkanApp,
+        timeout: TimeInterval = 8,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> Bool {
+        let label = app.application.staticTexts[text]
+        let exists = label.waitForExistence(timeout: timeout)
+        XCTAssertTrue(exists, "未找到文案：\(text)", file: file, line: line)
+        return exists
+    }
+
+    /// 断言页面未停留在全局 Loading。
+    static func assertNotStuckOnLoading(
+        app: SuixinkanApp,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) {
+        let loading = app.application.staticTexts["加载中"]
+        XCTAssertFalse(loading.exists, "页面不应长期停留在全局 Loading。", file: file, line: line)
+    }
+}