X_UI_RUNTIME_MISSING

a host capability @ultimat3/ui needs is absent

four conditions, one code, and the cause names which: no Solid runtime registered while a DOM render is under way (solid(), <UiProvider>); document/window absent when browserThemeEnv() is asked for theme control; Bun.CryptoHasher absent when hashing a brand stylesheet for CSP; the icon generator's own environment — no network to lucide-static, or no biome binary. Neither IntersectionObserver nor localStorage is one of them: InfiniteScroll returns without observing when the first is absent, and a theme read is wrapped in safeStorage for the private-mode Safari that throws on the second

for the runtime, paste import { createContext, createEffect, createMemo, createRoot, createSignal, onCleanup, useContext } from 'solid-js'; at the top of the *.island.tsx and setSolidRuntime({ createContext, useContext, createSignal, createMemo, createEffect, onCleanup, createRoot }); as the first line of its mount(), above render() — x g resource <name> writes exactly those two lines, and a server render needs neither. Seven named imports, never import * as solidRuntime: the namespace registers too, and keeps every export of solid-js in the island chunk (14.8 kB minified, measured). Off the DOM, pass an explicit ThemeEnv: initTheme(myServerThemeEnv). For a CSP hash, call brandStyleCspSource() during build or SSR, never in browser code. For icons: bun install, then bun run --filter @ultimat3/ui icons