PxIgnis

Rework landing page: hero rewrite, 'What You Can Build', 'Why Script?' sections, PxLuaNova pill, showcase placeholders

Add lambda literal extension ({ ... } syntax) and docs site

Refresh MODRINTH.md copy

Bump to 0.11.0 — Regions, EventBus, tick, mc.off

Fix doc inaccuracies: ctx.args->positional, events signatures, overlays, coroutine scope, and more