Dependencies

Every external service or library the app relies on, why it's here, and what stops working without it.

External services

Service	Used for	What breaks without it
Lovable Cloud (Supabase)	Postgres database, Auth (email + Google), Realtime, Storage	Everything. The app is a thin client over Supabase — no backend = no data, no login, no votes, no plans.
Firecrawl	Scrapes AMC Metreon 16 + Kabuki 8 showtime pages from amctheatres.com	The sync endpoint can't refresh data. Existing movies and showtimes still display, but become increasingly stale. AMC RSVPs eventually empty out.
Google OAuth (via Supabase Auth)	One-tap sign in / sign up	Users fall back to email + password. No data loss.
Cloudflare Workers (Lovable hosting)	Runs SSR + the /api/public server route	Site won't serve. Provided by Lovable hosting — not managed manually.

Core runtime libraries

Package	Why it's used	What breaks
`react / react-dom`	Rendering	App doesn't render.
`@tanstack/react-router + @tanstack/react-start`	File-based routing, SSR shell, server functions	No routing, no SSR. Equivalent to losing the framework.
`@tanstack/react-query`	Caching, background refetch, query invalidation	All hooks in src/lib/queries.ts must be rewritten with manual useEffect + setState. Realtime invalidation breaks.
`@supabase/supabase-js`	Postgres / Auth / Realtime client	Cannot read or write any data.
`@lovable.dev/cloud-auth-js`	Lovable Cloud auth helpers	Signup / login flows need to be rewritten against raw supabase.auth.
`tailwindcss + @tailwindcss/vite`	Styling via utility classes + design tokens in styles.css	All styling disappears.
`lucide-react`	Icon set used across UI	Icons stop rendering — replace with another set.
`@radix-ui/* + class-variance-authority + clsx + tailwind-merge`	Foundations for shadcn/ui primitives in src/components/ui	Dialogs, sheets, popovers, dropdowns, etc. lose accessibility and behavior.
`react-hook-form + @hookform/resolvers + zod`	Form state + validation in onboarding/login/signup	Forms fall back to manual state; validation is lost.
`date-fns`	Formatting showtimes and watch dates	Date strings render unformatted.
`sonner`	Toast notifications (vote success, RSVP confirm, errors)	User actions become silent — no feedback.
`cmdk`	Command palette primitive (used in some shadcn components)	Affected components lose their search/filter UX.
`embla-carousel-react / react-day-picker / input-otp / react-resizable-panels / recharts / vaul`	Bundled with shadcn/ui — used selectively if at all	Only the components that import them are affected.

Build & dev tooling

Package	Role
`vite + @cloudflare/vite-plugin`	Dev server and edge-targeted production build
`@tanstack/router-plugin`	Generates src/routeTree.gen.ts from files in src/routes/
`typescript`	Strict mode — every import must resolve or build fails
`eslint, prettier`	Lint + format

Secrets required

FIRECRAWL_API_KEY — for the AMC sync endpoint.
Supabase URL and anon key are auto-injected via the Lovable Cloud integration (VITE_SUPABASE_*) and never edited manually.