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>

tags.json

@@ -0,0 +1,9 @@
+{
+  "💜": { "label": "Tessa", "color": "magenta" },
+  "💚": { "label": "Caroline", "color": "green" },
+  "✈️": { "label": "Holidays", "color": "lightblue" },
+  "💼": { "label": "Work", "color": "gray" },
+  "🦊": { "label": "Abunai!", "color": "orange" },
+  "⛏️": { "label": "Xam", "color": "red" },
+  "🎲": { "label": "DND", "color": "yellow" }
+}