feat: 添加 Ktor 客户端认证插件以增强 API 安全性

- 在 build.gradle.kts 中新增 Ktor 客户端认证依赖。
- 更新 ApiService 类，使用 Ktor 内置的 Auth 插件实现 Bearer token 自动管理和刷新逻辑，提升 API 调用的安全性和稳定性。

app-android/app/build.gradle.kts

@@ -137,6 +137,7 @@ dependencies {
     implementation(libs.ktor.client.content.negotiation)
     implementation(libs.ktor.serialization.kotlinx.json)
     implementation(libs.ktor.client.logging)
+    implementation(libs.ktor.client.auth)
     
     // Room
     implementation(libs.androidx.room.runtime)

app-android/app/src/main/java/com/huaga/life_echo/network/ApiService.kt

@@ -1,11 +1,12 @@
 package com.huaga.life_echo.network
 
 import com.huaga.life_echo.data.auth.TokenManager
-import com.huaga.life_echo.network.interceptors.AuthInterceptorPlugin
 import com.huaga.life_echo.network.models.*
 import io.ktor.client.*
 import io.ktor.client.call.*
 import io.ktor.client.engine.android.*
+import io.ktor.client.plugins.auth.*
+import io.ktor.client.plugins.auth.providers.*
 import io.ktor.client.plugins.contentnegotiation.*
 import io.ktor.client.plugins.logging.*
 import io.ktor.client.plugins.HttpTimeout
@@ -19,8 +20,8 @@ import kotlinx.serialization.json.jsonObject
 import kotlinx.serialization.json.jsonPrimitive
 
 class ApiService(
-    tokenManager: TokenManager? = null,
-    authService: AuthService? = null
+    private val tokenManager: TokenManager? = null,
+    private val authService: AuthService? = null
 ) {
     private val client = HttpClient(Android) {
         install(ContentNegotiation) {
@@ -37,11 +38,48 @@ class ApiService(
             socketTimeoutMillis = 45_000   // 读写超时
         }
 
-        // 如果提供了tokenManager和authService，安装认证拦截器
+        // 使用Ktor内置Auth插件：自动添加Bearer token，401时自动刷新并重试
         if (tokenManager != null && authService != null) {
-            install(AuthInterceptorPlugin) {
-                this.tokenManager = tokenManager
-                this.authService = authService
+            install(Auth) {
+                bearer {
+                    loadTokens {
+                        val access = tokenManager.getAccessToken()
+                        val refresh = tokenManager.getRefreshToken()
+                        if (!access.isNullOrBlank() && !refresh.isNullOrBlank()) {
+                            BearerTokens(access, refresh)
+                        } else null
+                    }
+                    refreshTokens {
+                        val refresh = oldTokens?.refreshToken
+                            ?: tokenManager.getRefreshToken()
+                        if (!refresh.isNullOrBlank()) {
+                            val result = authService.refreshToken(refresh)
+                            result.fold(
+                                onSuccess = { tokenResponse ->
+                                    tokenManager.saveTokens(
+                                        tokenResponse.access_token,
+                                        tokenResponse.refresh_token,
+                                        tokenManager.getUserId() ?: ""
+                                    )
+                                    BearerTokens(
+                                        tokenResponse.access_token,
+                                        tokenResponse.refresh_token
+                                    )
+                                },
+                                onFailure = {
+                                    tokenManager.clearTokens()
+                                    tokenManager.notifyTokenRefreshFailed()
+                                    null
+                                }
+                            )
+                        } else {
+                            tokenManager.clearTokens()
+                            tokenManager.notifyTokenRefreshFailed()
+                            null
+                        }
+                    }
+                    sendWithoutRequest { true }
+                }
             }
         }
     }

app-android/gradle/libs.versions.toml

@@ -45,6 +45,7 @@ ktor-client-websockets = { group = "io.ktor", name = "ktor-client-websockets", v
 ktor-client-content-negotiation = { group = "io.ktor", name = "ktor-client-content-negotiation", version.ref = "ktor" }
 ktor-serialization-kotlinx-json = { group = "io.ktor", name = "ktor-serialization-kotlinx-json", version.ref = "ktor" }
 ktor-client-logging = { group = "io.ktor", name = "ktor-client-logging", version.ref = "ktor" }
+ktor-client-auth = { group = "io.ktor", name = "ktor-client-auth", version.ref = "ktor" }
 
 # Room
 androidx-room-runtime = { group = "androidx.room", name = "room-runtime", version.ref = "room" }