- Add anchor links to every section reference across README,
repeatedly-changing-systems, and detailed-primers index
- Add Quick-Scan Class/Method Index table for compile-error lookup
- Add Entities/mobs/mob AI topic section to the topic map
- Surface all Minor Migrations subsections individually
- Nest primer pages under Detailed Primers in sidebar
- Enable search
- Replace CSS with cleaner dark theme (system fonts, GitHub palette)
- Remove direct-port-guide.md (21k line inlined primer merge)
- Remove duplicate Google Fonts import from head.hbs
