Build a responsive Job Board web application using modern TypeScript, React, and Tailwind CSS. Include user authentication supporting two distinct roles: Employers and Job Seekers. Create an intuitive Job Search homepage featuring interactive search filters for keywords, job type (full-time, part-time, remote), salary range, and location. Develop a comprehensive Employer Dashboard where companies can post new jobs, manage active listings, edit postings, and review incoming candidate applications. Integrate Stripe Checkout API to seamlessly process $99 paid job postings before publishing them publicly on the platform. Job seekers must be able to upload PDF resumes, submit applications with a personalized cover note, and track application progress from a dedicated candidate portal. Implement serverless API routes with schema validation and configure automated email notifications via Resend whenever a new job application is submitted or a listing is purchased. Ensure all UI components follow modern responsive layout patterns, support dark mode, and include clear loading states and accessible error messages across all forms.