Fix shell output display (#24490)

packages/core/src/services/executionLifecycleService.ts

@@ -19,6 +19,7 @@ export type ExecutionMethod =
 export interface ExecutionResult {
   rawOutput?: Buffer;
   output: string;
+  ansiOutput?: AnsiOutput;
   exitCode: number | null;
   signal: number | null;
   error: Error | null;
@@ -452,10 +453,13 @@ export class ExecutionLifecycleService {
     } = options ?? {};
 
     const output = execution.getBackgroundOutput?.() ?? execution.output;
+    const snapshot = execution.getSubscriptionSnapshot?.();
+    const ansiOutput = Array.isArray(snapshot) ? snapshot : undefined;
 
     this.settleExecution(executionId, {
       rawOutput: Buffer.from(output, 'utf8'),
       output,
+      ansiOutput,
       exitCode,
       signal,
       error,

packages/core/src/services/shellExecutionService.ts

@@ -1123,9 +1123,21 @@ export class ShellExecutionService {
               ShellExecutionService.activePtys.delete(ptyPid);
             });
 
+            const endLine = headlessTerminal.buffer.active.length;
+            const startLine = Math.max(
+              0,
+              endLine - (shellExecutionConfig.maxSerializedLines ?? 2000),
+            );
+            const ansiOutputSnapshot = serializeTerminalToObject(
+              headlessTerminal,
+              startLine,
+              endLine,
+            );
+
             ExecutionLifecycleService.completeWithResult(ptyPid, {
               rawOutput: Buffer.from(''),
               output: getFullBufferText(headlessTerminal),
+              ansiOutput: ansiOutputSnapshot,
               exitCode,
               signal: signal ?? null,
               error,