EventListView's calendar prev/next/today context was keyed "nav", shadowing management.context_processors.active_nav_section's identically-named "nav" (the value _nav_items.html uses to mark the Events sub-item active) -- so clicking Calendar never highlighted Events underneath it. Renamed to "calendar_nav". Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ECGMEwrc2k4D8VQuwjstj9