Witch's Deck

Build "Witch's Deck" — a polished mobile-first portrait web app for the Eazo community, built from a live TikTok trend, in the swipe-to-decide card family.

CONCEPT
A black cauldron bubbles at the bottom of a full-bleed midnight scene, its surface reflecting whatever is above it. Tarot-sized recipe cards hover over the steam one at a time, each illustrated with woodcut-style ingredients. Fling a card into the cauldron and it catches at the edges, burns inward, and its ingredients rise back out as coloured smoke that stains the brew. Fling it away and it crumbles to ash that drifts off screen.

RULES & STATES
- Tap-anywhere full-bleed scene: the title is painted into the cauldron smoke itself, the whole screen is live from the first paint and one flick hint dissolves on first touch.
- Right / into the pot = want to make it: edge-first burn animation, then coloured ingredient smoke rises and permanently tints the brew; the brew colour is the running record of your choices.
- Left = not today: the card greys, crumbles from the corner and its ash drifts off the top of the screen.
- Every recipe is realistically makeable — the fantasy is entirely in the art, never in the method — and each card shows its true time and difficulty as two small runes.
- Result: a long ingredient scroll that unrolls out of the cauldron listing everything you accepted, grouped by shop aisle, over the final brew colour. Replay boils a fresh empty pot. Ambient: the brew never stops bubbling and the steam always drifts.

OPENING (no cover, tap-anywhere full-bleed scene)
Open into a full-bleed scene with the title rendered inside the artwork itself; the whole screen is tappable from the first paint and there is no start button, no cover and no tutorial card. One short gesture hint dissolves on the first touch. Keep ambient motion running so the first frame is never static.

GLOBAL REQUIREMENTS
- Language: ship a lightweight built-in i18n layer with exactly two locales, English (en) and Chinese (zh). The app ALWAYS opens in English — hardcode the default locale to en and never call navigator.language or otherwise detect the system or browser language. Provide one small, comfortably tappable EN / 中文 toggle placed top-right, about 56px down from the top edge, clear of the device status bar. Chinese appears only after the user actively switches. The cover, onboarding, defaults, generated content and all share output stay English regardless of locale. Never mix two languages on one screen. Declare one shared TypeScript interface whose fields are all string, annotate both dictionaries with it and look them up as Record<'en'|'zh', T> — never let the two dictionaries infer incompatible literal types, and run a production type check before you call it done.
- Fully self-contained: absolutely no external APIs of any kind — no AI calls, no third-party data, media or font services, no remote backend, no login. Embed every item of data, copy and content in the app code. Draw all artwork procedurally in code; no image assets, no camera and no photo import.
- Share: integrate a Share feature using the @eazo/sdk community share interface so the player can post the result directly to the Eazo Community. Follow the SDK's own current best practices for composing and attaching the result — do not invent custom share plumbing. The attachment must be something the community server can fetch over the network. Place Share on the result state, keep Replay available, no placeholder buttons, and never claim the post was shared when it was not (in a plain browser the share cannot actually publish, so the button must reflect the real return value).
- SSR determinism: the initial render must be deterministic. No Math.random(), no Date.now(), no locale-dependent number or date formatting during first paint — move all of it into a client effect or drive it from a fixed seed. Hydration must produce zero console errors.
- Mobile-first portrait, touch-only, no hover dependence. The app root must follow the host container height (position: fixed; inset: 0; height: 100%) — never 100dvh or 100svh. Size any canvas from its PARENT element using a ResizeObserver and run the fit once on mount; convert every touch event through getBoundingClientRect() read at event time — never cache the rect and never use window.innerWidth/innerHeight for canvas sizing. Clamp every derived geometry value to a legal range at the point it is computed, so no radius, size or index can ever go negative or non-finite.
- Safe areas: keep all top UI at least 56px from the top edge. Keep every core interactive control AND every self-drawn bottom UI element (HUD text, counters, legends, hints) fully above the bottom 88px of the viewport — the Eazo mobile app overlays a native toolbar there that your code cannot detect. Verify at 393x852 portrait.
- Fill the screen: the layout must stretch to the full host height. No dead colour band in the lower half — if the stage has a fixed aspect ratio, give the leftover vertical space a designed extension (gradient, ambient particles, scene ground), never a bare block.
- No background music and no autoplay audio.
- Complete real states: loading, empty, success and error where relevant. Every control must actually work — no alerts, console-log placeholders or fake results.
- Visual bar: exactly ONE core rule understood within 3 seconds, with rich generous visual response on every touch (motion, particles, deformation, colour, light). Canvas 2D preferred for effects; do not use the canvas roundRect API (older iOS Safari lacks it). Never hardcode light text colours onto possibly-light backgrounds — derive text colour from the theme. Keep some ambient motion at all times so no screen is ever a still image.