feat(calendar): add default calendars and event indicators

- Create 4 default calendars for new users: Persönlich, Beruf, Familie, Freizeit
- Add event count dots below dates in DateStrip (max 5 dots)
- Show blue dots for events, white dots on today

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/calendar/apps/backend/src/calendar/calendar.service.ts

@@ -113,12 +113,56 @@ export class CalendarService {
 			return updated;
 		}
 
-		// Create a new default calendar
-		return this.create(userId, {
-			name: 'Mein Kalender',
-			isDefault: true,
-			color: '#3B82F6',
-		});
+		// Create default calendars for new user
+		await this.createDefaultCalendars(userId);
+
+		// Return the default one
+		const defaultCal = await this.db
+			.select()
+			.from(calendars)
+			.where(and(eq(calendars.userId, userId), eq(calendars.isDefault, true)));
+
+		return defaultCal[0];
+	}
+
+	/**
+	 * Create default calendars for a new user
+	 */
+	async createDefaultCalendars(userId: string): Promise<Calendar[]> {
+		const defaultCalendars = [
+			{
+				name: 'Persönlich',
+				color: '#3B82F6', // Blue
+				isDefault: true,
+				description: 'Private Termine',
+			},
+			{
+				name: 'Beruf',
+				color: '#10B981', // Green
+				isDefault: false,
+				description: 'Arbeit, Meetings, Projekte',
+			},
+			{
+				name: 'Familie',
+				color: '#F97316', // Orange
+				isDefault: false,
+				description: 'Familientermine, Geburtstage',
+			},
+			{
+				name: 'Freizeit',
+				color: '#8B5CF6', // Violet
+				isDefault: false,
+				description: 'Hobbies, Sport, Events',
+			},
+		];
+
+		const created: Calendar[] = [];
+		for (const cal of defaultCalendars) {
+			const calendar = await this.create(userId, cal);
+			created.push(calendar);
+		}
+
+		return created;
 	}
 
 	private async clearDefaultCalendar(userId: string): Promise<void> {

apps/calendar/apps/web/src/lib/components/calendar/DateStrip.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
 	import { viewStore } from '$lib/stores/view.svelte';
+	import { eventsStore } from '$lib/stores/events.svelte';
 	import {
 		format,
 		isToday,
@@ -13,6 +14,12 @@
 	import { onMount, tick } from 'svelte';
 	import SunCalc from 'suncalc';
 
+	// Get event count for a day (max 5 dots displayed)
+	function getEventCount(date: Date): number {
+		const events = eventsStore.getEventsForDay(date, false);
+		return Math.min(events.length, 5); // Cap at 5 dots
+	}
+
 	// Moon phase emojis (8 phases)
 	const MOON_EMOJIS = ['🌑', '🌒', '🌓', '🌔', '🌕', '🌖', '🌗', '🌘'];
 
@@ -223,6 +230,7 @@
 				{@const dayIsRangeEnd = isSameDay(day, viewRange.end)}
 				{@const isFirstOfMonth = day.getDate() === 1}
 				{@const moonPhase = isSignificantMoonPhase(day)}
+				{@const eventCount = getEventCount(day)}
 				{#if isFirstOfMonth}
 					<div class="month-divider"></div>
 				{/if}
@@ -249,6 +257,13 @@
 					<span class="day-number" style={dayIsToday ? 'color: white;' : ''}
 						>{format(day, 'd')}</span
 					>
+					{#if eventCount > 0}
+						<div class="event-dots" style={dayIsToday ? 'opacity: 0.9;' : ''}>
+							{#each Array(eventCount) as _, i}
+								<span class="event-dot" style={dayIsToday ? 'background: white;' : ''}></span>
+							{/each}
+						</div>
+					{/if}
 				</button>
 			{/each}
 		</div>
@@ -371,6 +386,21 @@
 		line-height: 1;
 	}
 
+	.event-dots {
+		display: flex;
+		gap: 2px;
+		justify-content: center;
+		margin-top: 2px;
+	}
+
+	.event-dot {
+		width: 4px;
+		height: 4px;
+		border-radius: 50%;
+		background: #3b82f6;
+		opacity: 0.7;
+	}
+
 	.day-item:hover {
 		background: var(--color-muted, #f3f4f6);
 	}