Fix Backend & Deploy Portal

I have a small historical-archive site (Asr-ı Saadet Portalı) whose static front-end is finished in HTML, CSS, and vanilla JS. I now need a helping hand to get it live. Top priority: straighten out my GitHub repository so the codebase is clean, branch history makes sense, and pushing updates is hassle-free. Once GitHub is tidy, I’d like basic guidance on: • Connecting my existing pages to Firebase Firestore—just a working read/write example so I can follow the pattern myself afterward. • Resolving the single deployment error on Vercel and confirming the site builds successfully. This is a low-budget job that should suit a junior developer or student eager to earn a first freelance review and add a real deployment to a portfolio. If you’re comfortable with Git/GitHub workflow, Firebase basics, and Vercel deployments, I’d love to collaborate.