Temps console design

Two documents govern console UI, and they cover different ground:

• DESIGN.md (repo root): the existing, authoritative reference for web/src as it stands today — full-width pages, compact empty states, shared tables/pagination, shadcn controls.
• web/packages/ds/docs/RULES.md: the same conventions, codified into a real package (@temps-sdk/ds) with templates, a token pipeline, and lint enforcement. Read RULES.md, brand-guidelines.md, and design-system-handoff.md in web/packages/ds/docs/ before building or reviewing anything that touches it.

Both describe the same visual system (Vercel-inspired Geist theme, near-black primary, state colors plus small provider brand marks). Neither is the old "operator ink" prototype (@temps-sdk/op, briefly @temps-sdk/ds, PR #915) — that had a different visual language (a glyph vocabulary, an "ink" skin class), zero consumers, and was deleted. Never reference it, its mockups, or its styling.