Integrate Amap SDK to replace CoreLocation and MapKit for all location features.

Unify GPS, reverse geocoding, and map display behind LocationProvider with privacy-gated bootstrap after login, aligned with Android.

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

suixinkan/Config/AMapConfig.swift

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+//
+//  AMapConfig.swift
+//  suixinkan
+//
+
+import Foundation
+
+/// 高德地图 SDK 配置。
+enum AMapConfig {
+    /// 高德开放平台 iOS Key，需与 Bundle ID `com.yuanzhixiang.suixinkan` 绑定。
+    nonisolated static let apiKey = "ea25441168468f39e276687dc94b8e7c"
+}

suixinkan/Config/AppAgreementURLs.swift

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+//
+//  AppAgreementURLs.swift
+//  suixinkan
+//
+
+import Foundation
+
+/// App 协议与隐私政策链接，对齐 Android `AgreementRoutes`。
+enum AppAgreementURLs {
+    /// 隐私政策 H5 地址。
+    nonisolated static var privacyPolicy: URL {
+        APIEnvironment.current.baseURL.appending(path: "h5/app/privacy-policy")
+    }
+
+    /// 用户协议 H5 地址。
+    nonisolated static var userAgreement: URL {
+        APIEnvironment.current.baseURL.appending(path: "h5/app/user-agreement")
+    }
+
+    /// 高德地图开放平台隐私权政策。
+    nonisolated static let amapPrivacyPolicy = URL(string: "https://lbs.amap.com/pages/privacy/")!
+}