Sync from docs/wiki @ 1bfb9b4
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Add Headless Linux Appliance page; sync manual from docs/wiki New page: boot-to-EFIS on a headless x86-64 Linux box (eglfs-vs-PyQt6-wheel, X/xcb, systemd services, nav-data updater). Also picks up pending docs/wiki edits (Home, Running-from-Source, Widgets-Flight-Instruments) and the sidebar. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Bill Mallard <wpballard@gmail.com>
Sync manual from docs/wiki: HSI GPS ground-track diamond + refreshed HSI options Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add pyEFIS manual: widgets, screens, screen builder, pilot guide Generated from docs/wiki in the pyEfis repo (tools/sync_wiki.sh). Includes 13 widget/screen screenshots. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>