v0.9.1: the creation wizard

Adds the guided creation flow: ask for a creation and the skill walks you through it (questions, then a reference check with prompts for missing views, a brief, block-out and likeness, build, hand-over). New commands: sw.py new, sw.py refs. Each part in the viewer and the parts CSV now links to its BrickLink page. Walkthrough: docs/wizard.md; ordering: docs/ordering.md.

Install: npx skills add geastham/snapwright, or upload snapwright.zip in Claude.ai under Skills.