[Codename-11]

Summary

• let Workspace flow begin beneath Focus on wide dashboards instead of waiting for the taller Live operations rail
• give every Command Center attention group a compact two-item preview with explicit Show more / Show fewer controls
• add responsive Playwright coverage for rail fill, independent attention overflow, and keyboard-accessible expansion

Verification

• pnpm lint (passes; existing repository warnings only)
• pnpm typecheck
• focused Playwright: Dashboard layout, Command Center layout, and attention actions
• serial Vitest: 1,496 passed / 12 skipped; one unrelated GitHub webhook fixture-race failure passed immediately when rerun alone

Implements AXI-139