feat: v0.1.0 - geolocation capture, calendar, search, Starlight docs site

- Automatic browser geolocation capture on event creation
- Reverse geocoding via Nominatim API for place names
- Full-text search with SQLite FTS5
- Calendar view for browsing past entries
- DateNavigator component for day navigation
- SearchModal with Ctrl+K shortcut
- QuickAddWidget with Ctrl+J shortcut
- Starlight documentation site with GitHub Pages deployment
- Multiple AI provider support (Groq, OpenAI, Anthropic, Ollama, LM Studio)
- Multi-user registration support

BREAKING: Events now include latitude/longitude/placeName fields

docs/src/styles/custom.css

@@ -0,0 +1,21 @@
+/* Custom DearDiary styling */
+:root[data-theme='light'] {
+  --sl-color-accent-low: #e9e3ff;
+  --sl-color-accent: #7c3aed;
+  --sl-color-accent-high: #4c1d95;
+  --sl-color-white: #1e1b4b;
+  --sl-color-gray-1: #3730a3;
+  --sl-color-gray-2: #4338ca;
+  --sl-color-gray-3: #4f46e5;
+  --sl-color-gray-4: #6366f1;
+  --sl-color-gray-5: #818cf8;
+  --sl-color-gray-6: #a5b4fc;
+  --sl-color-gray-7: #c7d2fe;
+  --sl-color-black: #e0e7ff;
+}
+
+:root[data-theme='dark'] {
+  --sl-color-accent-low: #4c1d95;
+  --sl-color-accent: #a78bfa;
+  --sl-color-accent-high: #c4b5fd;
+}