fix(tui): make Esc clear line and cancel hidden prompts in minimal mode

src/frontends/tui/minimal.ts

@@ -163,8 +163,18 @@ export class MinimalTui {
 
     // Listen for line changes to show hints
     this.keypressHandler = (char: string, key: readline.Key) => {
-      if (this.activePromptCancel && this.isEscapeKey(char, key)) {
-        this.activePromptCancel();
+      if (this.isEscapeKey(char, key)) {
+        if (this.activePromptCancel) {
+          this.activePromptCancel();
+          return;
+        }
+        if (this.rl) {
+          try {
+            this.rl.write(null, { ctrl: true, name: 'u' });
+          } catch {
+            // ignore
+          }
+        }
         return;
       }
 
@@ -520,6 +530,30 @@ export class MinimalTui {
         stdoutMuted?: boolean;
         _writeToOutput?: (s: string) => void;
       };
+      const stdin = process.stdin as NodeJS.ReadStream & {
+        isRaw?: boolean;
+        setRawMode?: (mode: boolean) => void;
+      };
+      const wasRaw = Boolean(stdin.isRaw);
+      let enabledRawForPrompt = false;
+      let dataListener: ((chunk: Buffer) => void) | null = null;
+      let settled = false;
+
+      if (stdin.isTTY && stdin.setRawMode && !wasRaw) {
+        stdin.setRawMode(true);
+        enabledRawForPrompt = true;
+      }
+
+      const cleanup = () => {
+        if (dataListener) {
+          stdin.removeListener('data', dataListener);
+          dataListener = null;
+        }
+        if (enabledRawForPrompt && stdin.setRawMode) {
+          stdin.setRawMode(false);
+        }
+      };
+
       rlAny.stdoutMuted = true;
       rlAny._writeToOutput = (s: string) => {
         if (!rlAny.stdoutMuted) {
@@ -532,8 +566,40 @@ export class MinimalTui {
           process.stdout.write('*');
         }
       };
-      const answer = await new Promise<string>((resolve) => rl.question(question, resolve));
+      const answer = await new Promise<string>((resolve) => {
+        dataListener = (chunk: Buffer) => {
+          if (settled) {
+            return;
+          }
+          if (chunk.length === 1 && chunk[0] === 0x1b) {
+            settled = true;
+            rl.close();
+            resolve('');
+          }
+        };
+        stdin.on('data', dataListener);
+
+        const onClose = () => {
+          if (settled) {
+            return;
+          }
+          settled = true;
+          resolve('');
+        };
+        if (typeof rl.once === 'function') {
+          rl.once('close', onClose);
+        }
+
+        rl.question(question, (value) => {
+          if (settled) {
+            return;
+          }
+          settled = true;
+          resolve(value);
+        });
+      });
       rlAny.stdoutMuted = false;
+      cleanup();
       rl.close();
       process.stdout.write('\n');
       return answer.trim();