docs: point 0.8.0 wiki links to main
docs: audit 0.8.0 wiki accuracy
docs: cover animated textures and renumbered lessons
Rename field definition headings
Place API examples before field references
Improve API reference coverage and organization
docs: renumber beginner examples
Document expanded override APIs for 0.7.3
docs: align released user documentation
docs(fuels): explain registration and machine policies