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>

suixinkanTests/MockLocationProvider.swift

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+//
+//  MockLocationProvider.swift
+//  suixinkanTests
+//
+
+import CoreLocation
+@testable import suixinkan
+
+/// 测试用定位替身。
+final class MockLocationProvider: LocationProviding, @unchecked Sendable {
+    var snapshot = HomeLocationSnapshot(latitude: 39.9087, longitude: 116.3975, address: "北京市东城区")
+    var coordinate = CLLocationCoordinate2D(latitude: 39.9087, longitude: 116.3975)
+    var reverseGeocodeResult = "北京市东城区"
+    var requestSnapshotError: Error?
+    var requestCoordinateError: Error?
+
+    func requestSnapshot() async throws -> HomeLocationSnapshot {
+        if let requestSnapshotError { throw requestSnapshotError }
+        return snapshot
+    }
+
+    func requestCoordinate() async throws -> CLLocationCoordinate2D {
+        if let requestCoordinateError { throw requestCoordinateError }
+        return coordinate
+    }
+
+    func reverseGeocode(latitude: Double, longitude: Double) async -> String {
+        reverseGeocodeResult
+    }
+}