refactor(daemon): extract windows cmd argv helpers

src/daemon/cmd-argv.ts

@@ -0,0 +1,26 @@
+import { splitArgsPreservingQuotes } from "./arg-split.js";
+import { assertNoCmdLineBreak } from "./cmd-set.js";
+
+export function quoteCmdScriptArg(value: string): string {
+  assertNoCmdLineBreak(value, "Command argument");
+  if (!value) {
+    return '""';
+  }
+  const escaped = value.replace(/"/g, '\\"').replace(/%/g, "%%").replace(/!/g, "^!");
+  if (!/[ \t"&|<>^()%!]/g.test(value)) {
+    return escaped;
+  }
+  return `"${escaped}"`;
+}
+
+export function unescapeCmdScriptArg(value: string): string {
+  return value.replace(/\^!/g, "!").replace(/%%/g, "%");
+}
+
+export function parseCmdScriptCommandLine(value: string): string[] {
+  // Script renderer escapes quotes (`\"`) and cmd expansions (`%%`, `^!`).
+  // Keep all other backslashes literal so Windows drive/UNC paths survive.
+  return splitArgsPreservingQuotes(value, { escapeMode: "backslash-quote-only" }).map(
+    unescapeCmdScriptArg,
+  );
+}