Add business registration requests with approval flow, SMS notifications, and owner businesses endpoint.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/common/utils/slug.util.ts

@@ -0,0 +1,26 @@
+export function slugifyTitle(value: string): string {
+  return value
+    .trim()
+    .toLowerCase()
+    .replace(/\s+/g, '-')
+    .replace(/[^a-z0-9-]/g, '')
+    .replace(/-+/g, '-')
+    .replace(/^-|-$/g, '');
+}
+
+export async function uniqueBusinessSlug(
+  title: string,
+  exists: (slug: string) => Promise<boolean>,
+): Promise<string> {
+  let base = slugifyTitle(title);
+  if (!base) {
+    base = 'business';
+  }
+  let slug = base;
+  let suffix = 0;
+  while (await exists(slug)) {
+    suffix += 1;
+    slug = `${base}-${suffix}`;
+  }
+  return slug;
+}