fix: 在终端容器捕获Escape按键

- 在xterm容器捕获阶段转发Escape控制字符
- 阻止Radix与xterm继续重复处理同一事件

frontend/src/components/server/TerminalDialog.tsx

@@ -132,12 +132,6 @@ export function TerminalDialog({
     const ws = new WebSocket(wsUrl);
     wsRef.current = ws;
 
-    // xterm 在目标元素阶段直接转发 Escape，避免 Radix 捕获层吞掉 Vim 控制字符。 // Logan.Li
-    term.attachCustomKeyEventHandler((event) => {
-      if (event.key !== "Escape") return true;
-      if (event.type === "keydown") sendTerminalInput("\x1b");
-      return false;
-    });
     term.onData(sendTerminalInput);
 
     ws.onmessage = (event) => {
@@ -189,6 +183,7 @@ export function TerminalDialog({
     if (!open || !authReady) return;
 
     let cleanup: (() => void) | undefined;
+    let detachEscape: (() => void) | undefined;
     let fitFrame = 0;
     let retry = 0;
 
@@ -201,6 +196,16 @@ export function TerminalDialog({
         if (retry++ < 30) requestAnimationFrame(attach);
         return;
       }
+      // 在 xterm 目标元素之前截获 Escape，直接发送给远端并阻止 Radix/xterm 重复处理。 // Logan.Li
+      const forwardEscape = (event: KeyboardEvent) => {
+        if (event.key !== "Escape") return;
+        event.preventDefault();
+        event.stopPropagation();
+        sendTerminalInput("\x1b");
+      };
+      container.addEventListener("keydown", forwardEscape, true);
+      detachEscape = () =>
+        container.removeEventListener("keydown", forwardEscape, true);
       cleanup = attachTerminalResize(container, fit, term, ws);
       const applyFit = () => {
         try {
@@ -217,6 +222,7 @@ export function TerminalDialog({
     attach();
     return () => {
       if (fitFrame) cancelAnimationFrame(fitFrame);
+      detachEscape?.();
       cleanup?.();
     };
   }, [open, authReady, fullscreen]);