API, holiday indicators; UI polish; bump version
Dashboard:
Add Syncfusion academic period dropdown next to group selector
Navigate scheduler to today's month/day within selected period year on change
Show adjacent holiday plan badge; keep "holidays in view" counter on the right
Compact dropdown widths for a tighter toolbar
Default blocking of scheduling on holidays; block entries styled like all-day; black text styling
API:
Add academic periods routes: list, get active, set active (POST), for_date
Register blueprint in wsgi
Holidays:
Support TXT/CSV upload; headerless TXT uses columns 2-4; region remains null
Docs:
Update shared Copilot instructions with academic periods endpoints and dashboard integration details