Bootstrap Classified Ads Web App

I’m putting together a fully responsive classified-ads site built only with HTML, CSS, vanilla JavaScript, and the latest version of Bootstrap. The core flow is straightforward:

• Visitors create an account or log in, then post, edit, or delete their own ads.
• Every ad must surface instantly through a fast search bar plus category and location filters.
• Posting is powered by a token system. Users can buy tokens through UPI and spend them to publish or boost listings.

What I need from you is the complete front-end package—clean, commented source files ready for drop-in back-end wiring later. That means:

1. Polished Bootstrap layouts for the landing page, auth pages, ad listing grid, single-ad view, token checkout, and a user dashboard.
2. Modular JavaScript handling form validation, client-side storage of session data, dynamic ad cards, token balance updates, and the UPI payment flow stub (I’ll connect the real gateway afterward).
3. Reusable utility classes and SCSS/CSS that keep the design consistent, responsive, and lightweight.
4. Clear build/readme notes so another developer can plug in the server-side logic without hunting for hooks.

Acceptance is simple: logging in, posting an ad, editing or deleting it, searching with live filters, and purchasing tokens through the mocked UPI screen should all work smoothly in the browser with no external dependencies beyond Bootstrap and plain JS.

If this matches your skill set, let’s get moving—I’m ready to review your first layout sketches and component structure right away.