docs: sync wiki from the main repository Eight pages, sourced from wiki/ in ArdaDDemir/luminareef so they can be reviewed in pull requests alongside the code they describe. The deep technical pages (Architecture, Performance, Customizing) are short orientations that point at docs/ in the main repo, so there is one canonical copy to keep correct rather than two that drift. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>