docs: rename Scene Navigator to Scene Tree and update keyboard shortcut to Ctrl+T
docs: add documentation for new structural template feature in Home and Getting Started pages
docs: update Scene Navigator documentation to include section header support in synopses
docs: update wiki with v0.8.7 release features, scene navigation documentation, and expanded keyboard shortcuts
Update wiki with new interactive tutorial details
Add comprehensive Fount wiki - 16 pages covering every feature, command, shortcut, and configuration option