fix(cli): 补齐显式机器输出边界

scripts/src/output.ts

@@ -97,7 +97,7 @@ export function emitText(text: string, command = "text"): void {
 
 export function emitError(command: string, error: unknown): void {
   const safeCommand = redactSensitiveCommandArgs(command);
-  if (error instanceof CliInputError && !cliDebugEnabled()) {
+  if (error instanceof CliInputError && !cliDebugEnabled() && !cliJsonOutputRequested()) {
     safeStdoutWrite(renderTextOutput(safeCommand, renderCliInputErrorText(safeCommand, error)));
     return;
   }
@@ -171,15 +171,18 @@ function cliInputErrorPayload(error: CliInputError): Record<string, unknown> {
     ...(error.usage !== undefined ? { usage: error.usage } : {}),
     ...(error.supported !== undefined ? { supported: error.supported } : {}),
     ...(error.hint !== undefined ? { hint: error.hint } : {}),
-    ...(debug
-      ? { debug: true, stack: error.stack ?? null }
-      : {
-          stackOmitted: true,
-          diagnosticHint: "Set UNIDESK_CLI_DEBUG=1 only when an input error needs a stack trace.",
-        }),
+    ...(debug ? { debug: true, stack: error.stack ?? null } : { debug: false }),
   };
 }
 
+function cliJsonOutputRequested(argv = process.argv.slice(2)): boolean {
+  for (let index = 0; index < argv.length; index += 1) {
+    if (argv[index] === "--json") return true;
+    if (argv[index] === "-o" && argv[index + 1] === "json") return true;
+  }
+  return false;
+}
+
 function cliDebugEnabled(): boolean {
   return process.env.UNIDESK_CLI_DEBUG === "1"
     || process.env.UNIDESK_CLI_FULL_ERROR === "1"