skill-v3.9.0

- **Decorative grid backgrounds are now a named tell.** Impeccable refuses the two-axis CSS grid overlay built from hairline gradient lines and a repeating `background-size`, the pattern Codex reaches for on almost any empty surface. Actual canvases, maps, blueprints, and measurement tools still get their grid; everything else gets real product structure or a plain surface.

- **`/impeccable bolder` stays inside your design system.** When a project has a `DESIGN.md`, tokens, or established component styles, a bolder pass now makes the existing language more decisive through hierarchy, proportion, density, and copy instead of inventing new colors, gradients, or effects. If the system genuinely cannot express the direction, it names the exact additions and asks before expanding.

- **Critique holds its independence on more harnesses.** On harnesses other than Claude and Codex, the critique pass now runs in its own sub-agent more often, so the review reads the design with fresh eyes instead of inheriting the editing context that produced it.

- **Bundled helpers run under strict-permission harnesses.** The skill's bundled Node helpers now execute on harnesses that lock permissions down, so setup and detection work without extra approval prompts.

- **Codex hook manifest fixed.** Corrected the Codex hook manifest schema so the post-edit design check registers cleanly.