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

@@ -0,0 +1,12 @@
+//
+//  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"
+}