fix: 'DEPLOY IN 3 MINUTES' → 'APPLY IN 3 MINUTES'

fix: landing page polish — Register nav, 87 visitor counter, slower scroll-reveal animations, redesigned job cards with match quality rings, better last-scraped display

feat: retro-futuristic neon landing page redesign with 3D canvas, job carousel, testimonials carousel

Add about.html with dev profile + how-to section

Initial commit: Joblin platform