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

backend/prisma/schema.prisma

@@ -42,6 +42,9 @@ model Event {
   content   String
   mediaPath String?
   metadata  String?
+  latitude  Float?
+  longitude Float?
+  placeName String?
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
@@ -55,6 +58,7 @@ model Journal {
   id          String   @id @default(uuid())
   userId      String
   date        String
+  title       String?
   content     String
   eventCount  Int
   generatedAt DateTime @default(now())
@@ -78,6 +82,7 @@ model Task {
   request    String?
   response   String?
   error      String?
+  title      String?
   createdAt  DateTime @default(now())
   completedAt DateTime?
 
@@ -94,7 +99,7 @@ model Settings {
   aiApiKey        String?
   aiModel         String @default("llama-3.3-70b-versatile")
   aiBaseUrl       String?
-  journalPrompt   String @default("You are a factual diary summarizer. Your ONLY job is to summarize the entries provided to you - nothing more.\n\nCRITICAL RULES:\n1. ONLY use information explicitly stated in the entries below\n2. NEVER invent, assume, or hallucinate any detail not in the entries\n3. NEVER add activities, emotions, weather, or context not directly mentioned\n4. If something is unclear in the entries, simply state what IS clear\n5. Keep the summary grounded and factual - no embellishment\n6. Do not write in an overly creative or story-telling style\n7. Only reference what the user explicitly recorded\n\nStructure:\n- Start with what was recorded (meetings, tasks, activities)\n- Note any explicit feelings or observations mentioned\n- Keep it concise and factual\n- If there are gaps in the day, acknowledge only what was recorded")
+  journalPrompt   String?
   language        String @default("en")
   timezone        String @default("UTC")
   providerSettings String?