Add product applicability controls to promotion forms

Introduces product selection and exclusion controls to both new and edit promotion forms, allowing promotions to target all, specific, or all-but-specific products. Adds a reusable ProductSelector component, updates promotion types to support new fields, and adjusts cookie max-age for authentication. Also adds two new business quotes.

app/api/auth/set-cookie/route.ts

@@ -31,8 +31,8 @@ export async function POST(req: NextRequest) {
     const cookieOptions = {
       // HttpOnly for security - prevents JavaScript access
       httpOnly: true,
-      // Valid for 7 days (same as the JWT)
-      maxAge: 7 * 24 * 60 * 60,
+      // Valid for 3 hours
+      maxAge: 3 * 60 * 60,
       // Only send in requests to our domain
       path: '/',
       // Strict same-site policy to prevent CSRF