okhp3-tradition-observance-calendar

Fetch, compute, and format religious observance calendars for the three in-scope Abrahamic traditions of the Abrahamic Reference Engine: Judaism, Christianity, and Islam. Use this skill whenever an agent needs to retrieve religious holiday data, generate iCalendar (.ics) output, look up holiday descriptions for cross-tradition audiences, or produce a unified observance event list. Covers Hebcal API (Jewish), AlAdhan API (Islamic), TypeScript Computus algorithm (Christian -- Western and Orthodox), Wikipedia summary fetching for event descriptions, .ics file generation, emoji assignments, holiday filter lists, and session caching strategy. All data sources are free, public, and require no API key. Zero cost. MIT license. Also activate when a user asks to "add holidays to my calendar app", "download religious observances as .ics", "show Jewish/Islamic/Christian holidays for a year", or compute Easter dates -- including when they ask for "all three faiths" or any single tradition's observa