Initial commit: year overview app for Google Calendar ICS feeds

Local Node app that fetches a Google Calendar ICS URL server-side (to avoid
browser CORS restrictions) and renders a two-year overview with each day
split into morning/afternoon/evening segments, colored by emoji found at
the start of event titles (configured in tags.json).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitignore

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