refactor: normalize cli command hints

src/cli/profile-utils.ts

@@ -0,0 +1,15 @@
+const PROFILE_NAME_RE = /^[a-z0-9][a-z0-9_-]{0,63}$/i;
+
+export function isValidProfileName(value: string): boolean {
+  if (!value) return false;
+  // Keep it path-safe + shell-friendly.
+  return PROFILE_NAME_RE.test(value);
+}
+
+export function normalizeProfileName(raw?: string | null): string | null {
+  const profile = raw?.trim();
+  if (!profile) return null;
+  if (profile.toLowerCase() === "default") return null;
+  if (!isValidProfileName(profile)) return null;
+  return profile;
+}