- UserGuideModal: full-screen overlay rendering user-guide.md as
styled markdown with search filtering
- UserMenu: add 'User Guide' item with BookOpen icon between
Feature Request and Sign Out
- Serve user-guide.md as static file from frontend/public/
- Guide renders with dark theme styling matching the dashboard
aesthetic (blue headers, slate text, amber blockquotes)
- Replace all STEAM branding with AEGIS (Advanced Engineering Group
Intelligence System) across login, header, nav drawer, manifest, and
browser title
- Add shield logo to login page, main header, and nav drawer
- Fix BU drift checker recording incorrect previous_bu values by
building a previousBuMap snapshot BEFORE the upsert/delete cycle
instead of querying the DB after rows are already gone
- Clean 526 bogus BU history entries generated by the broken logic
- Add docs and scripts from prior session
