light mode fix

deps: shadcnUI for adminusers

add: ShadcnUI and fix mobile layout

chore(deps): Tailwind v3->v4 and bug fixes

LCP optimization

fix: github actionss

frontend and DB code refactor

new color palatte

mobile optimized UI

fix: actions, fonts and test attempt

test: add Playwright E2E suite, CI action, and UI performance optimization

refactor/perf: light/dark mode + add tests + optimize

chore: color contrast, math render

fix: math render and light mode

initial commit