feat(proxy): add local proxy auto-scan and fix hot-reload

- Add scan_local_proxies command to detect common proxy ports
- Fix SkillService not using updated proxy after hot-reload
- Move global proxy settings to advanced tab
- Add error handling for scan failures

src-tauri/src/commands/global_proxy.rs

@@ -2,18 +2,18 @@
 //!
 //! 提供获取、设置和测试全局代理的 Tauri 命令。
 
-use crate::database::Database;
 use crate::proxy::http_client;
+use crate::store::AppState;
 use serde::Serialize;
-use std::sync::Arc;
-use std::time::Instant;
+use std::net::{Ipv4Addr, SocketAddrV4, TcpStream};
+use std::time::{Duration, Instant};
 
 /// 获取全局代理 URL
 ///
 /// 返回当前配置的代理 URL，null 表示直连。
 #[tauri::command]
-pub fn get_global_proxy_url(db: tauri::State<'_, Arc<Database>>) -> Result<Option<String>, String> {
-    db.get_global_proxy_url().map_err(|e| e.to_string())
+pub fn get_global_proxy_url(state: tauri::State<'_, AppState>) -> Result<Option<String>, String> {
+    state.db.get_global_proxy_url().map_err(|e| e.to_string())
 }
 
 /// 设置全局代理 URL
@@ -21,10 +21,7 @@ pub fn get_global_proxy_url(db: tauri::State<'_, Arc<Database>>) -> Result<Optio
 /// - 传入非空字符串：启用代理
 /// - 传入空字符串：清除代理（直连）
 #[tauri::command]
-pub fn set_global_proxy_url(
-    db: tauri::State<'_, Arc<Database>>,
-    url: String,
-) -> Result<(), String> {
+pub fn set_global_proxy_url(state: tauri::State<'_, AppState>, url: String) -> Result<(), String> {
     let url_opt = if url.trim().is_empty() {
         None
     } else {
@@ -32,7 +29,10 @@ pub fn set_global_proxy_url(
     };
 
     // 1. 保存到数据库
-    db.set_global_proxy_url(url_opt).map_err(|e| e.to_string())?;
+    state
+        .db
+        .set_global_proxy_url(url_opt)
+        .map_err(|e| e.to_string())?;
 
     // 2. 热更新全局 HTTP 客户端
     http_client::update_proxy(url_opt)?;
@@ -69,14 +69,14 @@ pub async fn test_proxy_url(url: String) -> Result<ProxyTestResult, String> {
     let start = Instant::now();
 
     // 构建带代理的临时客户端
-    let proxy = reqwest::Proxy::all(&url).map_err(|e| format!("Invalid proxy URL: {}", e))?;
+    let proxy = reqwest::Proxy::all(&url).map_err(|e| format!("Invalid proxy URL: {e}"))?;
 
     let client = reqwest::Client::builder()
         .proxy(proxy)
         .timeout(std::time::Duration::from_secs(10))
         .connect_timeout(std::time::Duration::from_secs(10))
         .build()
-        .map_err(|e| format!("Failed to build client: {}", e))?;
+        .map_err(|e| format!("Failed to build client: {e}"))?;
 
     // 测试连接到 api.anthropic.com
     // 使用 HEAD 请求，即使返回 401 也说明网络通了
@@ -99,7 +99,7 @@ pub async fn test_proxy_url(url: String) -> Result<ProxyTestResult, String> {
         }
         Err(e) => {
             let latency = start.elapsed().as_millis() as u64;
-            log::debug!("[GlobalProxy] Test failed: {} -> {} ({}ms)", url, e, latency);
+            log::debug!("[GlobalProxy] Test failed: {url} -> {e} ({latency}ms)");
             Ok(ProxyTestResult {
                 success: false,
                 latency_ms: latency,
@@ -130,3 +130,48 @@ pub struct UpstreamProxyStatus {
     /// 代理 URL
     pub proxy_url: Option<String>,
 }
+
+/// 检测到的代理信息
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DetectedProxy {
+    /// 代理 URL
+    pub url: String,
+    /// 代理类型 (http/socks5)
+    pub proxy_type: String,
+    /// 端口
+    pub port: u16,
+}
+
+/// 常见代理端口配置
+const PROXY_PORTS: &[(u16, &str)] = &[
+    (7890, "http"),    // Clash
+    (7891, "socks5"),  // Clash SOCKS
+    (1080, "socks5"),  // 通用 SOCKS5
+    (8080, "http"),    // 通用 HTTP
+    (8888, "http"),    // Charles/Fiddler
+    (3128, "http"),    // Squid
+    (10808, "socks5"), // V2Ray
+    (10809, "http"),   // V2Ray HTTP
+];
+
+/// 扫描本地代理
+///
+/// 检测常见端口是否有代理服务在运行。
+#[tauri::command]
+pub fn scan_local_proxies() -> Vec<DetectedProxy> {
+    let mut found = Vec::new();
+
+    for &(port, proxy_type) in PROXY_PORTS {
+        let addr = SocketAddrV4::new(Ipv4Addr::LOCALHOST, port);
+        if TcpStream::connect_timeout(&addr.into(), Duration::from_millis(100)).is_ok() {
+            found.push(DetectedProxy {
+                url: format!("{proxy_type}://127.0.0.1:{port}"),
+                proxy_type: proxy_type.to_string(),
+                port,
+            });
+        }
+    }
+
+    found
+}