refactor: move proxy toggle into panel and surface app takeover options

Move the proxy on/off switch from the accordion header into the panel
content area, placing it right above the app takeover section. This
ensures users see the takeover options immediately after enabling the
proxy, preventing the common pitfall of running the proxy without
actually taking over any app.

- Simplify accordion trigger to standard style with Badge only
- Add AnimatePresence animation for takeover section reveal
- Remove duplicate takeover switches from running info card
- Update stoppedDescription i18n to reference "above toggle"
- Add proxy.takeover.hint key in zh/en/ja

src/i18n/locales/en.json

@@ -1582,7 +1582,7 @@
       "currentProvider": "Current Provider:",
       "waitingFirstRequest": "Current Provider: Waiting for first request...",
       "stoppedTitle": "Proxy Service Stopped",
-      "stoppedDescription": "Use the toggle in the top right to start the service",
+      "stoppedDescription": "Use the toggle above to start the service",
       "openSettings": "Configure Proxy Service",
       "stats": {
         "activeConnections": "Active Connections",
@@ -1673,6 +1673,12 @@
       "restartRequired": "Restart proxy service for address or port changes to take effect"
     },
     "switchFailed": "Switch failed: {{error}}",
+    "takeover": {
+      "hint": "Select apps to take over — once enabled, requests from that app will be routed through the local proxy",
+      "enabled": "{{app}} takeover enabled",
+      "disabled": "{{app}} takeover disabled",
+      "failed": "Failed to toggle takeover"
+    },
     "failover": {
       "proxyRequired": "Proxy service must be started to configure failover",
       "autoSwitch": "Auto Failover",

src/i18n/locales/ja.json

@@ -1582,7 +1582,7 @@
       "currentProvider": "現在のプロバイダー:",
       "waitingFirstRequest": "現在のプロバイダー: 最初のリクエスト待ち...",
       "stoppedTitle": "プロキシサービス停止中",
-      "stoppedDescription": "右上のトグルでサービスを開始できます",
+      "stoppedDescription": "上のトグルでサービスを開始できます",
       "openSettings": "プロキシサービスを設定",
       "stats": {
         "activeConnections": "アクティブ接続",
@@ -1673,6 +1673,12 @@
       "restartRequired": "アドレスまたはポートの変更を反映するにはプロキシサービスの再起動が必要です"
     },
     "switchFailed": "切り替えに失敗しました: {{error}}",
+    "takeover": {
+      "hint": "テイクオーバーするアプリを選択します。有効にすると、そのアプリのリクエストはローカルプロキシ経由で転送されます",
+      "enabled": "{{app}} テイクオーバー有効",
+      "disabled": "{{app}} テイクオーバー無効",
+      "failed": "テイクオーバーの切り替えに失敗しました"
+    },
     "failover": {
       "proxyRequired": "フェイルオーバーを設定するには、プロキシサービスを先に起動する必要があります",
       "autoSwitch": "自動フェイルオーバー",

src/i18n/locales/zh.json

@@ -1582,7 +1582,7 @@
       "currentProvider": "当前 Provider：",
       "waitingFirstRequest": "当前 Provider：等待首次请求…",
       "stoppedTitle": "代理服务已停止",
-      "stoppedDescription": "使用右上角开关即可启动服务",
+      "stoppedDescription": "使用上方开关即可启动服务",
       "openSettings": "配置代理服务",
       "stats": {
         "activeConnections": "活跃连接",
@@ -1673,6 +1673,12 @@
       "restartRequired": "修改地址或端口后需要重启代理服务才能生效"
     },
     "switchFailed": "切换失败: {{error}}",
+    "takeover": {
+      "hint": "选择要接管的应用，启用后该应用的请求将通过本地代理转发",
+      "enabled": "{{app}} 接管已启用",
+      "disabled": "{{app}} 接管已关闭",
+      "failed": "切换接管状态失败"
+    },
     "failover": {
       "proxyRequired": "需要先启动代理服务才能配置故障转移",
       "autoSwitch": "自动故障转移",