impeccable-deterministic-frontend-scanner-postToolUse-hook

The Impeccable npm package (github.com/pbakaus/impeccable) provides a 3,590-line zero-LLM-cost JS engine with 25 detection rules covering 13 AI slop tells (Inter/default fonts, glassmorphism, pill badges, gradient text, centered layouts, emoji in UI, etc.) and 12 general quality rules. Wire as a PostToolUse hook on Write/Edit to .html/.css/.tsx/.jsx/.svelte/.astro files via npx impeccable detect --json <file> — surfaces violations inline at zero token cost.