fix(cli): resolve paste issue on Windows terminals. (#15932)

integration-tests/context-compress-interactive.test.ts

@@ -32,7 +32,7 @@ describe('Interactive Mode', () => {
     await run.sendKeys(
       'Write a 200 word story about a robot. The story MUST end with the text THE_END followed by a period.',
     );
-    await run.sendKeys('\r');
+    await run.type('\r');
 
     // Wait for the specific end marker.
     await run.expectText('THE_END.', 30000);

integration-tests/extensions-reload.test.ts

@@ -95,7 +95,10 @@ describe('extension reloading', () => {
 
       // Poll for the updated list
       await rig.pollCommand(
-        () => run.sendKeys('\u0015/mcp list\r'),
+        async () => {
+          await run.sendText('/mcp list');
+          await run.type('\r');
+        },
         () => {
           const output = stripAnsi(run.output);
           return (
@@ -110,9 +113,9 @@ describe('extension reloading', () => {
       // Update the extension, expect the list to update, and mcp servers as well.
       await run.sendKeys('\u0015/extensions update test-extension');
       await run.expectText('/extensions update test-extension');
-      await run.sendKeys('\r');
+      await run.type('\r');
       await new Promise((resolve) => setTimeout(resolve, 500));
-      await run.sendKeys('\r');
+      await run.type('\r');
       await run.expectText(
         ` * test-server (remote): http://localhost:${portB}/mcp`,
       );
@@ -123,7 +126,10 @@ describe('extension reloading', () => {
 
       // Poll for the updated extension version
       await rig.pollCommand(
-        () => run.sendKeys('\u0015/extensions list\r'),
+        async () => {
+          await run.sendText('/extensions list');
+          await run.type('\r');
+        },
         () =>
           stripAnsi(run.output).includes(
             'test-extension (v0.0.2) - active (updated)',
@@ -133,7 +139,10 @@ describe('extension reloading', () => {
 
       // Poll for the updated mcp tool
       await rig.pollCommand(
-        () => run.sendKeys('\u0015/mcp list\r'),
+        async () => {
+          await run.sendText('/mcp list');
+          await run.type('\r');
+        },
         () => {
           const output = stripAnsi(run.output);
           return (
@@ -146,7 +155,7 @@ describe('extension reloading', () => {
       );
 
       await run.sendText('/quit');
-      await run.sendKeys('\r');
+      await run.type('\r');
 
       // Clean things up.
       await serverA.stop();

integration-tests/file-system-interactive.test.ts

@@ -37,7 +37,7 @@ describe('Interactive file system', () => {
     // Step 1: Read the file
     const readPrompt = `Read the version from ${fileName}`;
     await run.type(readPrompt);
-    await run.sendKeys('\r');
+    await run.type('\r');
 
     const readCall = await rig.waitForToolCall('read_file', 30000);
     expect(readCall, 'Expected to find a read_file tool call').toBe(true);
@@ -45,7 +45,7 @@ describe('Interactive file system', () => {
     // Step 2: Write the file
     const writePrompt = `now change the version to 1.0.1 in the file`;
     await run.type(writePrompt);
-    await run.sendKeys('\r');
+    await run.type('\r');
 
     // Check tool calls made with right args
     await rig.expectToolCallSuccess(

integration-tests/hooks-system.test.ts

@@ -1087,7 +1087,7 @@ console.log(JSON.stringify({
 
       // Send a prompt to establish a session and trigger an API call
       await run.sendKeys('Hello');
-      await run.sendKeys('\r');
+      await run.type('\r');
 
       // Wait for response to ensure API call happened
       await run.expectText('Hello', 15000);
@@ -1166,7 +1166,7 @@ console.log(JSON.stringify({
 
       // Send an initial prompt to establish a session
       await run.sendKeys('Say hello');
-      await run.sendKeys('\r');
+      await run.type('\r');
 
       // Wait for the response
       await run.expectText('Hello', 10000);
@@ -1176,14 +1176,14 @@ console.log(JSON.stringify({
       const numClears = 3;
       for (let i = 0; i < numClears; i++) {
         await run.sendKeys('/clear');
-        await run.sendKeys('\r');
+        await run.type('\r');
 
         // Wait a bit for clear to complete
         await new Promise((resolve) => setTimeout(resolve, 2000));
 
         // Send a prompt to establish an active session before next clear
         await run.sendKeys('Say hello');
-        await run.sendKeys('\r');
+        await run.type('\r');
 
         // Wait for response
         await run.expectText('Hello', 10000);

integration-tests/mcp_server_cyclic_schema.test.ts

@@ -200,7 +200,7 @@ describe('mcp server with cyclic tool schema is detected', () => {
     const run = await rig.runInteractive();
 
     await run.type('/mcp list');
-    await run.sendKeys('\r');
+    await run.type('\r');
 
     await run.expectText('tool_with_cyclic_schema');
   });

integration-tests/test-helper.ts

@@ -209,6 +209,12 @@ export class InteractiveRun {
   async type(text: string) {
     let typedSoFar = '';
     for (const char of text) {
+      if (char === '\r') {
+        // wait >30ms before `enter` to avoid fast return conversion
+        // from bufferFastReturn() in KeypressContent.tsx
+        await new Promise((resolve) => setTimeout(resolve, 50));
+      }
+
       this.ptyProcess.write(char);
       typedSoFar += char;