feat(push): 添加推送服务功能支持

- 新增推送相关的类型定义，包括消息类型、聊天类型、推送配置等接口
- 实现 HarmonyOS 推送 SDK，集成 HarmonyOS NEXT Push Kit 服务
- 实现 iOS 推送 SDK，支持 APNS 推送注册和消息接收
- 添加服务器端 APNS 推送提供商，支持 JWT 认证和推送消息发送
- 添加服务器端 HarmonyOS 推送提供商基础框架
- 集成推送配置加载和路由功能，支持多渠道推送分类管理

Sources/XuqmSDK/Push/PushSDK.swift

@@ -30,6 +30,8 @@ public final class PushSDK: NSObject, UNUserNotificationCenterDelegate {
     public static let shared = PushSDK()
     public weak var delegate: PushMessageDelegate?
     private var cachedToken: String?
+    private var cachedPushConfigAt: Date?
+    private var cachedPushConfig: PushRuntimeConfig?
     private override init() {
         super.init()
     }
@@ -39,6 +41,7 @@ public final class PushSDK: NSObject, UNUserNotificationCenterDelegate {
         #if canImport(UIKit) && canImport(ObjectiveC)
         PushAppDelegateInterceptor.install()
         #endif
+        try? await applyTenantConfiguration()
         _ = try await requestAuthorization(options: options)
     }
 
@@ -62,6 +65,7 @@ public final class PushSDK: NSObject, UNUserNotificationCenterDelegate {
 
     public func registerToken(_ token: String, userId: String, vendor: PushVendor = .apns) async throws {
         let config = XuqmSDK.shared.requireConfig()
+        try? await applyTenantConfiguration()
         cachedToken = token
         let _: EmptyResponse = try await ApiClient.shared.request(
             path: "/api/push/register",
@@ -93,6 +97,13 @@ public final class PushSDK: NSObject, UNUserNotificationCenterDelegate {
         #endif
     }
 
+    public func categoryIdentifier(for routeType: String) async -> String? {
+        if cachedPushConfig == nil {
+            try? await applyTenantConfiguration()
+        }
+        return cachedPushConfig?.routing[routeType]?.category
+    }
+
     public func unregisterToken(userId: String, vendor: PushVendor = .apns) async throws {
         let config = XuqmSDK.shared.requireConfig()
         let _: EmptyResponse = try await ApiClient.shared.request(
@@ -144,6 +155,79 @@ public final class PushSDK: NSObject, UNUserNotificationCenterDelegate {
             rawUserInfo: userInfo
         )
     }
+
+    private func applyTenantConfiguration(force: Bool = false) async throws {
+        if !force,
+           let cachedPushConfigAt,
+           Date().timeIntervalSince(cachedPushConfigAt) < 300 {
+            return
+        }
+        let config = XuqmSDK.shared.requireConfig()
+        let response: SdkRuntimeConfigResponse = try await ApiClient.shared.request(
+            path: "/api/sdk/config",
+            queryItems: [
+                URLQueryItem(name: "appId", value: config.appId),
+                URLQueryItem(name: "platform", value: "IOS"),
+            ]
+        )
+        cachedPushConfig = response.pushConfig
+        cachedPushConfigAt = Date()
+        registerNotificationCategories(response.pushConfig)
+    }
+
+    private func registerNotificationCategories(_ config: PushRuntimeConfig?) {
+        let categoryIds = Set(config?.routing.values.compactMap {
+            $0.category.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty ? nil : $0.category
+        } ?? [])
+        guard !categoryIds.isEmpty else { return }
+        let categories = categoryIds.map { categoryId in
+            UNNotificationCategory(
+                identifier: categoryId,
+                actions: [],
+                intentIdentifiers: [],
+                options: []
+            )
+        }
+        UNUserNotificationCenter.current().setNotificationCategories(Set(categories))
+    }
+}
+
+private struct SdkRuntimeConfigResponse: Decodable {
+    let pushConfig: PushRuntimeConfig?
+}
+
+private struct PushRuntimeConfig: Decodable {
+    let channels: [PushChannelConfig]
+    let routing: [String: PushRouteConfig]
+
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        channels = try container.decodeIfPresent([PushChannelConfig].self, forKey: .channels) ?? []
+        routing = try container.decodeIfPresent([String: PushRouteConfig].self, forKey: .routing) ?? [:]
+    }
+
+    private enum CodingKeys: String, CodingKey {
+        case channels
+        case routing
+    }
+}
+
+private struct PushChannelConfig: Decodable {
+    let key: String
+    let channelId: String
+    let version: Int
+    let name: String
+    let description: String?
+    let importance: String
+    let sound: Bool
+    let vibration: Bool
+    let badge: Bool
+}
+
+private struct PushRouteConfig: Decodable {
+    let channel: String
+    let category: String
+    let priority: String
 }
 
 #if canImport(UIKit) && canImport(ObjectiveC)