[Hugo-JC]

Summary

• Redesign the Live overlay with Integra blue, compact workbench styling, responsive layout and reduced-motion/high-contrast support.
• Add two modes: Quick Canvas for common preview actions and Inspector for detailed class/style controls.
• Show selected-element dimensions, display mode and font size.
• Coalesce pointer picking through requestAnimationFrame to avoid layout reads on every raw pointer event.
• Expand the Live Inspector skill with fast-launch, adapter, safety, accessibility, performance and source-handoff contracts.
• Update Live documentation and v2 specification.

Safety and scope

• Vite remains development-only through apply: 'serve'.
• Preview changes remain temporary DOM mutations; no source writing or AI provider calls.
• No runtime dependencies added.
• Escape closes and restores previews.

Validation

• Existing Live Inspector tests are retained.
• CI should run the full repository checks; visual browser verification remains required before marking the UI fully validated.

Review notes

The previous, unrelated Impeccable-alignment PR is not merged or included in this branch. This PR is based on main and can be reviewed independently.