Turing Wheel is a free browser toy for the Squeekchain community: a shared LED computer clocked by the real hamster Squeektoshi. One wheel pass is one CPU cycle, read from the public Squeekchain API and the SqueekCore contract on Sepolia. It is a static site in Vite and strict TypeScript with no UI framework, no backend, no token and no real money.

Fix the five bugs below, found by QA at this commit, then rebuild and host the site. Change as little as possible. This is a repair, not a redesign: keep the look, copy and layout on every viewport the bugs do not mention. Do not add a dependency. Do not add console.log. Do not use the em dash character.

BUG 1: navigation loses keyboard focus. navButton in src/ui/app.ts scrolls to its target but leaves focus on the button, so the next Tab jumps back to the top of the page. After scrolling, move focus to the target with focus({ preventScroll: true }), giving the target tabindex -1 if it cannot take focus. Reduced motion handling of the scroll stays as it is.

BUG 2: thumbnails still animate under reduced motion. In src/ui/led/thumbs.ts, draw() renders Math.floor(t) when reduced is true, so each thumbnail still changes about 2.5 times a second. With reduced motion each thumbnail must be one still frame from a fixed constant t, never derived from the clock. tick() must not redraw on a timer in that mode, and setProgram() must still redraw once so a thumbnail never shows a stale program.

BUG 3: help tips stay open after an outside click in WebKit. helpTip in src/ui/chrome.ts closes on blur, but WebKit does not focus a button on click, so blur never fires. While a tip is open, a document pointerdown listener must close it when the event lands outside that tip's wrapper. Remove the listener when the tip closes. Keep the Escape, blur and toggle behaviour, and keep the rule that only one tip is open at a time.

BUG 4: on a landscape phone the wall is below the fold. At 844 by 390 the first viewport shows only the logo, because fitAll in src/ui/app.ts sizes the lockup from hero width alone. On short landscape viewports, about max-height 480px with orientation landscape, cap the lockup from the available height and tighten the hero so that the LED wall is visible in the first viewport on load. Viewports taller than that must not change.

BUG 5: spellcheck: false never reaches the DOM. h() in src/ui/dom.ts skips every prop whose value is false, so the editor's spellcheck: false is dropped and browsers can underline code. Make spellcheck: false set the attribute to "false". Every other prop with the value false stays skipped.