diff --git a/src-tauri/src/database/dao/proxy.rs b/src-tauri/src/database/dao/proxy.rs
index a517d292e..806c14abb 100644
--- a/src-tauri/src/database/dao/proxy.rs
+++ b/src-tauri/src/database/dao/proxy.rs
@@ -41,7 +41,7 @@ impl Database {
                 Ok(GlobalProxyConfig {
                     proxy_enabled: false,
                     listen_address: "127.0.0.1".to_string(),
-                    listen_port: 5000,
+                    listen_port: 15721,
                     enable_logging: true,
                 })
             }
diff --git a/src-tauri/src/database/schema.rs b/src-tauri/src/database/schema.rs
index 295f48372..46d74df85 100644
--- a/src-tauri/src/database/schema.rs
+++ b/src-tauri/src/database/schema.rs
@@ -112,7 +112,7 @@ impl Database {
         conn.execute("CREATE TABLE IF NOT EXISTS proxy_config (
             app_type TEXT PRIMARY KEY CHECK (app_type IN ('claude','codex','gemini')),
             proxy_enabled INTEGER NOT NULL DEFAULT 0, listen_address TEXT NOT NULL DEFAULT '127.0.0.1',
-            listen_port INTEGER NOT NULL DEFAULT 5000, enable_logging INTEGER NOT NULL DEFAULT 1,
+            listen_port INTEGER NOT NULL DEFAULT 15721, enable_logging INTEGER NOT NULL DEFAULT 1,
             enabled INTEGER NOT NULL DEFAULT 0, auto_failover_enabled INTEGER NOT NULL DEFAULT 0,
             max_retries INTEGER NOT NULL DEFAULT 3, streaming_first_byte_timeout INTEGER NOT NULL DEFAULT 60,
             streaming_idle_timeout INTEGER NOT NULL DEFAULT 120, non_streaming_timeout INTEGER NOT NULL DEFAULT 600,
@@ -253,7 +253,7 @@ impl Database {
             [],
         );
         let _ = conn.execute(
-            "ALTER TABLE proxy_config ADD COLUMN listen_port INTEGER NOT NULL DEFAULT 5000",
+            "ALTER TABLE proxy_config ADD COLUMN listen_port INTEGER NOT NULL DEFAULT 15721",
             [],
         );
         let _ = conn.execute(
@@ -469,7 +469,7 @@ impl Database {
                 conn,
                 "proxy_config",
                 "listen_port",
-                "INTEGER NOT NULL DEFAULT 5000",
+                "INTEGER NOT NULL DEFAULT 15721",
             )?;
             Self::add_column_if_missing(
                 conn,
@@ -664,7 +664,7 @@ impl Database {
         conn.execute("CREATE TABLE proxy_config_new (
             app_type TEXT PRIMARY KEY CHECK (app_type IN ('claude','codex','gemini')),
             proxy_enabled INTEGER NOT NULL DEFAULT 0, listen_address TEXT NOT NULL DEFAULT '127.0.0.1',
-            listen_port INTEGER NOT NULL DEFAULT 5000, enable_logging INTEGER NOT NULL DEFAULT 1,
+            listen_port INTEGER NOT NULL DEFAULT 15721, enable_logging INTEGER NOT NULL DEFAULT 1,
             enabled INTEGER NOT NULL DEFAULT 0, auto_failover_enabled INTEGER NOT NULL DEFAULT 0,
             max_retries INTEGER NOT NULL DEFAULT 3, streaming_first_byte_timeout INTEGER NOT NULL DEFAULT 60,
             streaming_idle_timeout INTEGER NOT NULL DEFAULT 120, non_streaming_timeout INTEGER NOT NULL DEFAULT 600,
diff --git a/src/components/proxy/ProxyPanel.tsx b/src/components/proxy/ProxyPanel.tsx
index 537b8ff68..2f41ce501 100644
--- a/src/components/proxy/ProxyPanel.tsx
+++ b/src/components/proxy/ProxyPanel.tsx
@@ -40,7 +40,7 @@ export function ProxyPanel() {
 
   // 监听地址/端口的本地状态
   const [listenAddress, setListenAddress] = useState("127.0.0.1");
-  const [listenPort, setListenPort] = useState(5000);
+  const [listenPort, setListenPort] = useState(15721);
 
   // 同步全局配置到本地状态
   useEffect(() => {
@@ -389,7 +389,9 @@ export function ProxyPanel() {
                     id="listen-address"
                     value={listenAddress}
                     onChange={(e) => setListenAddress(e.target.value)}
-                    placeholder="127.0.0.1"
+                    placeholder={t("proxy.settings.fields.listenAddress.placeholder", {
+                      defaultValue: "127.0.0.1",
+                    })}
                   />
                   <p className="text-xs text-muted-foreground">
                     {t("proxy.settings.fields.listenAddress.description", {
@@ -410,9 +412,11 @@ export function ProxyPanel() {
                     type="number"
                     value={listenPort}
                     onChange={(e) =>
-                      setListenPort(parseInt(e.target.value) || 5000)
+                      setListenPort(parseInt(e.target.value) || 15721)
                     }
-                    placeholder="5000"
+                    placeholder={t("proxy.settings.fields.listenPort.placeholder", {
+                      defaultValue: "15721",
+                    })}
                   />
                   <p className="text-xs text-muted-foreground">
                     {t("proxy.settings.fields.listenPort.description", {
diff --git a/src/components/proxy/ProxyToggle.tsx b/src/components/proxy/ProxyToggle.tsx
index 7b007c63c..2b9b8cb9d 100644
--- a/src/components/proxy/ProxyToggle.tsx
+++ b/src/components/proxy/ProxyToggle.tsx
@@ -23,7 +23,11 @@ export function ProxyToggle({ className, activeApp }: ProxyToggleProps) {
     useProxyStatus();
 
   const handleToggle = async (checked: boolean) => {
-    await setTakeoverForApp({ appType: activeApp, enabled: checked });
+    try {
+      await setTakeoverForApp({ appType: activeApp, enabled: checked });
+    } catch (error) {
+      console.error("[ProxyToggle] Toggle takeover failed:", error);
+    }
   };
 
   const takeoverEnabled = takeoverStatus?.[activeApp] || false;
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index ef413521c..22de036fc 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -1058,7 +1058,7 @@
         },
         "listenPort": {
           "label": "Listen Port",
-          "placeholder": "5000",
+          "placeholder": "15721",
           "description": "Port number the proxy server listens on (1024 ~ 65535)"
         },
         "maxRetries": {
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index f5af02997..12effdc8a 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -1058,7 +1058,7 @@
         },
         "listenPort": {
           "label": "リッスンポート",
-          "placeholder": "5000",
+          "placeholder": "15721",
           "description": "プロキシサーバーがリッスンするポート番号（1024 ~ 65535）"
         },
         "maxRetries": {
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index 690e62482..2ca98528b 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -1058,7 +1058,7 @@
         },
         "listenPort": {
           "label": "监听端口",
-          "placeholder": "5000",
+          "placeholder": "15721",
           "description": "代理服务器监听的端口号（1024 ~ 65535）"
         },
         "maxRetries": {