hyperflow-design — design phase (Antigravity single-agent)

Design system and taste, not production code. Follow the hyperflow doctrine.

Steps

1. Design system first. Ensure .hyperflow/design/system.md exists — create it if missing, extend it (never regenerate) if present: tokens, type scale, motion language, voice, component inventory, references, anti-patterns.
2. Researched, not invented. Study ≥2 real-world references from the project's own field, combine them, then add one deliberate signature move — never copy a single source.
3. Taste applied. Discover and apply the matching local taste skill(s); pass the anti-slop floor (no default AI gradient, no serif-by-default, one accent, locked corner-radius scale, eyebrow restraint, no duplicate-intent CTAs, hero fits the viewport, every motion communicates state).
4. Record the bound design-system tokens and the named signature into the spec. When a motion surface is in scope, apply the Motion-language standards (compositor-only props, spring params, reduced-motion fallback); when a mobile surface is in scope, apply the mobile platform/device/accessibility matrix.

Rules

• No production code — only the design system and the spec.
• Defer to accessibility on any a11y conflict (the WCAG floor wins) and to security on any security conflict.
• Every best-practice claim about a pattern cites a current source.