docs: sync wiki with current codebase Update Architecture, Options-and-Tuning, Coordinate-Systems, and Home pages to reflect changes since early August: Float32 relative-position encoding replacing EncodedCartesian3, maxPoints and lazy hierarchy paging, the sphere-cache LRU, the epsgTable.ts split, and the styling options (colorMode, opacity, classificationFilter, intensityRange).
Add in-depth wiki: architecture, tuning, CRS, conversion, troubleshooting Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>