✨ feat(devlog): add activity grid page and extended stats

Add GitHub-style activity grid showing development contributions:
- Activity grid with color-coded commit intensity
- Total stats: commits, files changed, lines added/removed
- Contributors section with commit counts
- Recent activity list

Extended devlog schema with:
- stats: filesChanged, linesAdded, linesRemoved
- contributors: name, handle, commits per contributor
- workingHours: start/end timestamps

Updated all 9 devlogs with accurate git stats.
Added link to activity page from devlog index.

apps/manacore/apps/landing/src/content/config.ts

@@ -154,6 +154,30 @@ const devlogCollection = defineCollection({
 		featured: z.boolean().default(false),
 		commits: z.number().optional(),
 		readTime: z.number().optional(),
+		// Extended stats for activity grid
+		stats: z
+			.object({
+				filesChanged: z.number(),
+				linesAdded: z.number(),
+				linesRemoved: z.number(),
+			})
+			.optional(),
+		contributors: z
+			.array(
+				z.object({
+					name: z.string(),
+					handle: z.string().optional(),
+					commits: z.number().optional(),
+				})
+			)
+			.optional(),
+		// Working hours (11:00 to 11:00 next day convention)
+		workingHours: z
+			.object({
+				start: z.string(), // e.g., "2026-01-30T11:00"
+				end: z.string(), // e.g., "2026-01-31T11:00"
+			})
+			.optional(),
 	}),
 });
 

apps/manacore/apps/landing/src/content/devlog/2026-01-23-production-launch.md

@@ -18,6 +18,17 @@ tags:
 featured: true
 commits: 43
 readTime: 12
+stats:
+  filesChanged: 222
+  linesAdded: 19273
+  linesRemoved: 985
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 43
+workingHours:
+  start: '2026-01-23T11:00'
+  end: '2026-01-24T11:00'
 ---
 
 Heute war ein sehr produktiver Tag mit Fokus auf die **Produktivstellung der ManaCore Apps auf dem Mac Mini Server**. Die wichtigsten Errungenschaften:

apps/manacore/apps/landing/src/content/devlog/2026-01-26-monitoring-auth-ai.md

@@ -20,6 +20,17 @@ tags:
 featured: true
 commits: 54
 readTime: 10
+stats:
+  filesChanged: 155
+  linesAdded: 11566
+  linesRemoved: 2290
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 54
+workingHours:
+  start: '2026-01-26T11:00'
+  end: '2026-01-27T11:00'
 ---
 
 Produktiver Tag mit Fokus auf **Monitoring-Infrastruktur**, **Email-Authentifizierung** und **lokale AI-Services**. Die wichtigsten Errungenschaften:

apps/manacore/apps/landing/src/content/devlog/2026-01-28-massive-feature-sprint.md

@@ -21,6 +21,17 @@ tags:
 featured: true
 commits: 74
 readTime: 20
+stats:
+  filesChanged: 747
+  linesAdded: 56325
+  linesRemoved: 11567
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 74
+workingHours:
+  start: '2026-01-28T11:00'
+  end: '2026-01-29T11:00'
 ---
 
 Außergewöhnlich produktiver Tag (und Nacht!) mit **74 Commits** und mehreren großen neuen Features. Die wichtigsten Errungenschaften:

apps/manacore/apps/landing/src/content/devlog/2026-01-29-microservices-matrix-consolidation.md

@@ -24,6 +24,17 @@ tags:
 featured: true
 commits: 55
 readTime: 25
+stats:
+  filesChanged: 1082
+  linesAdded: 51520
+  linesRemoved: 12296
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 55
+workingHours:
+  start: '2026-01-29T11:00'
+  end: '2026-01-30T11:00'
 ---
 
 Außergewöhnlich produktiver Tag mit **55 Commits** - aufgeteilt in drei große Bereiche:

apps/manacore/apps/landing/src/content/devlog/2026-01-30-matrix-bots-llm-playground.md

@@ -18,6 +18,17 @@ tags:
 featured: false
 commits: 41
 readTime: 12
+stats:
+  filesChanged: 289
+  linesAdded: 17857
+  linesRemoved: 2113
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 41
+workingHours:
+  start: '2026-01-30T11:00'
+  end: '2026-01-31T11:00'
 ---
 
 Produktiver Tag mit **41 Commits** und Fokus auf Matrix Bot Expansion und Developer Experience:

apps/manacore/apps/landing/src/content/devlog/2026-01-31-matrix-consolidation-voice-support.md

@@ -20,6 +20,17 @@ tags:
 featured: true
 commits: 52
 readTime: 18
+stats:
+  filesChanged: 570
+  linesAdded: 24147
+  linesRemoved: 19564
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 52
+workingHours:
+  start: '2026-01-31T11:00'
+  end: '2026-02-01T11:00'
 ---
 
 Intensiver Tag (und Nacht!) mit **52 Commits** - der Fokus lag auf der Konsolidierung der Matrix Bot Infrastruktur:

apps/manacore/apps/landing/src/content/devlog/2026-02-01-ssd-migration-i18n-cicd.md

@@ -20,6 +20,17 @@ tags:
 featured: false
 commits: 42
 readTime: 14
+stats:
+  filesChanged: 289
+  linesAdded: 14561
+  linesRemoved: 3780
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 42
+workingHours:
+  start: '2026-02-01T11:00'
+  end: '2026-02-02T11:00'
 ---
 
 Produktiver Tag mit **42 Commits** und Fokus auf Infrastructure und Production Readiness:

apps/manacore/apps/landing/src/content/devlog/2026-02-02-cross-domain-sso-mana-media.md

@@ -20,6 +20,17 @@ tags:
 featured: true
 commits: 40
 readTime: 15
+stats:
+  filesChanged: 207
+  linesAdded: 9495
+  linesRemoved: 6405
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 40
+workingHours:
+  start: '2026-02-02T11:00'
+  end: '2026-02-03T11:00'
 ---
 
 Produktiver Tag mit **40 Commits** und Fokus auf nahtlose Authentifizierung über alle Apps:

apps/manacore/apps/landing/src/content/devlog/2026-02-11-photos-app-stt-tts-admin.md

@@ -21,6 +21,17 @@ tags:
 featured: true
 commits: 28
 readTime: 14
+stats:
+  filesChanged: 241
+  linesAdded: 14772
+  linesRemoved: 1668
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 28
+workingHours:
+  start: '2026-02-11T11:00'
+  end: '2026-02-12T11:00'
 ---
 
 Nach einer Woche Pause: **28 Commits** mit Fokus auf neue Apps und API-Infrastruktur:

apps/manacore/apps/landing/src/pages/devlog/activity.astro

@@ -0,0 +1,322 @@
+---
+import Layout from '../../layouts/Layout.astro';
+import Navbar from '../../components/navigation/Navbar.astro';
+import Footer from '../../components/navigation/Footer.astro';
+import Section from '../../components/content/Section.astro';
+import Container from '../../components/layout/Container.astro';
+import Heading from '../../components/typography/Heading.astro';
+import Text from '../../components/typography/Text.astro';
+import HeroSection from '../../components/content/HeroSection.astro';
+import { getCollection } from 'astro:content';
+import { Icon } from 'astro-icon/components';
+
+const posts = await getCollection('devlog');
+const sortedPosts = posts.sort((a, b) => a.data.date.getTime() - b.data.date.getTime());
+
+// Generate activity data for the grid (last 365 days)
+const today = new Date();
+const startDate = new Date(today);
+startDate.setDate(startDate.getDate() - 364);
+
+// Create a map of date -> activity level
+const activityMap = new Map<string, { commits: number; linesAdded: number; linesRemoved: number; posts: string[] }>();
+
+for (const post of sortedPosts) {
+	const dateKey = post.data.date.toISOString().split('T')[0];
+	const existing = activityMap.get(dateKey) || { commits: 0, linesAdded: 0, linesRemoved: 0, posts: [] };
+	activityMap.set(dateKey, {
+		commits: existing.commits + (post.data.commits || 0),
+		linesAdded: existing.linesAdded + (post.data.stats?.linesAdded || 0),
+		linesRemoved: existing.linesRemoved + (post.data.stats?.linesRemoved || 0),
+		posts: [...existing.posts, post.data.title],
+	});
+}
+
+// Generate weeks for the grid
+const weeks: { date: Date; dateKey: string; activity: number; commits: number; posts: string[] }[][] = [];
+let currentWeek: { date: Date; dateKey: string; activity: number; commits: number; posts: string[] }[] = [];
+const currentDate = new Date(startDate);
+
+// Pad the first week to start on Sunday
+const firstDayOfWeek = currentDate.getDay();
+for (let i = 0; i < firstDayOfWeek; i++) {
+	currentWeek.push({ date: new Date(0), dateKey: '', activity: -1, commits: 0, posts: [] });
+}
+
+while (currentDate <= today) {
+	const dateKey = currentDate.toISOString().split('T')[0];
+	const data = activityMap.get(dateKey);
+	const commits = data?.commits || 0;
+
+	// Activity level: 0 = none, 1 = low, 2 = medium, 3 = high, 4 = very high
+	let activity = 0;
+	if (commits > 0) activity = 1;
+	if (commits >= 20) activity = 2;
+	if (commits >= 40) activity = 3;
+	if (commits >= 60) activity = 4;
+
+	currentWeek.push({
+		date: new Date(currentDate),
+		dateKey,
+		activity,
+		commits,
+		posts: data?.posts || [],
+	});
+
+	if (currentWeek.length === 7) {
+		weeks.push(currentWeek);
+		currentWeek = [];
+	}
+
+	currentDate.setDate(currentDate.getDate() + 1);
+}
+
+// Push remaining days
+if (currentWeek.length > 0) {
+	weeks.push(currentWeek);
+}
+
+// Calculate totals
+const totalCommits = sortedPosts.reduce((sum, post) => sum + (post.data.commits || 0), 0);
+const totalLinesAdded = sortedPosts.reduce((sum, post) => sum + (post.data.stats?.linesAdded || 0), 0);
+const totalLinesRemoved = sortedPosts.reduce((sum, post) => sum + (post.data.stats?.linesRemoved || 0), 0);
+const totalFilesChanged = sortedPosts.reduce((sum, post) => sum + (post.data.stats?.filesChanged || 0), 0);
+const totalDays = sortedPosts.length;
+
+// Get all contributors
+const contributorMap = new Map<string, { name: string; handle?: string; commits: number }>();
+for (const post of sortedPosts) {
+	for (const contributor of post.data.contributors || []) {
+		const existing = contributorMap.get(contributor.name) || { name: contributor.name, handle: contributor.handle, commits: 0 };
+		contributorMap.set(contributor.name, {
+			...existing,
+			commits: existing.commits + (contributor.commits || 0),
+		});
+	}
+}
+const contributors = Array.from(contributorMap.values()).sort((a, b) => b.commits - a.commits);
+
+const activityColors = [
+	'bg-gray-100 dark:bg-gray-800', // 0 - none
+	'bg-green-200 dark:bg-green-900', // 1 - low
+	'bg-green-400 dark:bg-green-700', // 2 - medium
+	'bg-green-500 dark:bg-green-600', // 3 - high
+	'bg-green-600 dark:bg-green-500', // 4 - very high
+];
+
+const monthLabels = ['Jan', 'Feb', 'Mär', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez'];
+const dayLabels = ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'];
+
+const formatNumber = (num: number) => {
+	if (num >= 1000000) return (num / 1000000).toFixed(1) + 'M';
+	if (num >= 1000) return (num / 1000).toFixed(1) + 'K';
+	return num.toString();
+};
+
+const formatDate = (date: Date) => {
+	return new Intl.DateTimeFormat('de-DE', {
+		day: '2-digit',
+		month: 'long',
+		year: 'numeric',
+	}).format(date);
+};
+---
+
+<Layout title="Aktivität - ManaCore Entwicklung">
+	<div class="bg-gradient-to-b from-blue-50/30 via-white to-blue-50/30 dark:from-gray-900 dark:via-gray-900 dark:to-gray-900">
+		<Navbar />
+
+		<!-- Hero Section -->
+		<div class="relative">
+			<div class="absolute inset-0 -bottom-32">
+				<div class="absolute inset-0 bg-gradient-to-b from-blue-50/50 to-transparent dark:from-gray-900 dark:to-transparent"></div>
+				<div class="absolute top-0 right-0 w-96 h-96 bg-green-500/10 dark:bg-green-500/5 rounded-full blur-3xl"></div>
+				<div class="absolute bottom-0 left-0 w-96 h-96 bg-emerald-500/10 dark:bg-emerald-500/5 rounded-full blur-3xl"></div>
+			</div>
+
+			<HeroSection
+				title="Entwicklungsaktivität"
+				subtitle="Übersicht der Entwicklungsarbeit am ManaCore Projekt. Jeder Tag zählt."
+				background="none"
+				minHeight="small"
+				spacing="small"
+				containerClass="py-16 relative z-10"
+				centered={true}
+				debug={false}
+			/>
+		</div>
+
+		<!-- Stats Cards -->
+		<Section spacing="medium" class="relative">
+			<Container>
+				<div class="grid grid-cols-2 md:grid-cols-4 gap-4 mb-12">
+					<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-xl p-6 border border-gray-200 dark:border-gray-700">
+						<div class="flex items-center gap-3 mb-2">
+							<div class="w-10 h-10 rounded-lg bg-gradient-to-br from-green-500/20 to-emerald-500/20 flex items-center justify-center">
+								<Icon name="mdi:source-commit" class="w-5 h-5 text-green-600 dark:text-green-400" />
+							</div>
+							<Text size="sm" class="text-gray-500 dark:text-gray-400">Commits</Text>
+						</div>
+						<Heading as="h3" size="3" class="text-green-600 dark:text-green-400">{totalCommits}</Heading>
+					</div>
+
+					<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-xl p-6 border border-gray-200 dark:border-gray-700">
+						<div class="flex items-center gap-3 mb-2">
+							<div class="w-10 h-10 rounded-lg bg-gradient-to-br from-blue-500/20 to-cyan-500/20 flex items-center justify-center">
+								<Icon name="mdi:file-document-outline" class="w-5 h-5 text-blue-600 dark:text-blue-400" />
+							</div>
+							<Text size="sm" class="text-gray-500 dark:text-gray-400">Dateien</Text>
+						</div>
+						<Heading as="h3" size="3" class="text-blue-600 dark:text-blue-400">{formatNumber(totalFilesChanged)}</Heading>
+					</div>
+
+					<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-xl p-6 border border-gray-200 dark:border-gray-700">
+						<div class="flex items-center gap-3 mb-2">
+							<div class="w-10 h-10 rounded-lg bg-gradient-to-br from-emerald-500/20 to-green-500/20 flex items-center justify-center">
+								<Icon name="mdi:plus" class="w-5 h-5 text-emerald-600 dark:text-emerald-400" />
+							</div>
+							<Text size="sm" class="text-gray-500 dark:text-gray-400">Zeilen +</Text>
+						</div>
+						<Heading as="h3" size="3" class="text-emerald-600 dark:text-emerald-400">+{formatNumber(totalLinesAdded)}</Heading>
+					</div>
+
+					<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-xl p-6 border border-gray-200 dark:border-gray-700">
+						<div class="flex items-center gap-3 mb-2">
+							<div class="w-10 h-10 rounded-lg bg-gradient-to-br from-red-500/20 to-orange-500/20 flex items-center justify-center">
+								<Icon name="mdi:minus" class="w-5 h-5 text-red-600 dark:text-red-400" />
+							</div>
+							<Text size="sm" class="text-gray-500 dark:text-gray-400">Zeilen -</Text>
+						</div>
+						<Heading as="h3" size="3" class="text-red-600 dark:text-red-400">-{formatNumber(totalLinesRemoved)}</Heading>
+					</div>
+				</div>
+
+				<!-- Activity Grid -->
+				<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-2xl p-6 border border-gray-200 dark:border-gray-700 mb-8">
+					<div class="flex items-center justify-between mb-6">
+						<Heading as="h2" size="4">{totalDays} aktive Entwicklungstage</Heading>
+						<a href="/devlog" class="text-sm text-mana-blue hover:underline flex items-center gap-1">
+							Alle Devlogs
+							<Icon name="mdi:arrow-right" class="w-4 h-4" />
+						</a>
+					</div>
+
+					<!-- Grid -->
+					<div class="overflow-x-auto">
+						<div class="inline-flex gap-1">
+							<!-- Day labels -->
+							<div class="flex flex-col gap-1 mr-2 text-xs text-gray-400">
+								{dayLabels.map((day, i) => (
+									<div class="h-3 flex items-center" style={i % 2 === 0 ? '' : 'visibility: hidden'}>
+										{day}
+									</div>
+								))}
+							</div>
+
+							<!-- Weeks -->
+							{weeks.map((week, weekIndex) => (
+								<div class="flex flex-col gap-1">
+									{week.map((day) => (
+										<div
+											class={`w-3 h-3 rounded-sm ${day.activity === -1 ? 'bg-transparent' : activityColors[day.activity]} ${day.commits > 0 ? 'cursor-pointer hover:ring-2 hover:ring-offset-1 hover:ring-green-500' : ''}`}
+											title={day.activity === -1 ? '' : `${formatDate(day.date)}: ${day.commits} Commits${day.posts.length > 0 ? '\n' + day.posts.join(', ') : ''}`}
+										/>
+									))}
+								</div>
+							))}
+						</div>
+					</div>
+
+					<!-- Legend -->
+					<div class="flex items-center justify-end gap-2 mt-4 text-xs text-gray-500">
+						<span>Weniger</span>
+						{activityColors.map((color) => (
+							<div class={`w-3 h-3 rounded-sm ${color}`} />
+						))}
+						<span>Mehr</span>
+					</div>
+				</div>
+
+				<!-- Contributors -->
+				<div class="bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-2xl p-6 border border-gray-200 dark:border-gray-700">
+					<Heading as="h2" size="4" class="mb-6">Contributors</Heading>
+
+					<div class="space-y-4">
+						{contributors.map((contributor, index) => (
+							<div class="flex items-center gap-4">
+								<div class="w-10 h-10 rounded-full bg-gradient-to-br from-mana-blue to-purple-500 flex items-center justify-center text-white font-semibold">
+									{contributor.name.charAt(0)}
+								</div>
+								<div class="flex-1">
+									<div class="flex items-center gap-2">
+										<Text weight="semibold">{contributor.name}</Text>
+										{contributor.handle && (
+											<Text size="sm" class="text-gray-500">@{contributor.handle}</Text>
+										)}
+									</div>
+									<div class="flex items-center gap-4 mt-1">
+										<Text size="sm" class="text-gray-500">
+											<Icon name="mdi:source-commit" class="w-4 h-4 inline mr-1" />
+											{contributor.commits} Commits
+										</Text>
+										<div class="flex-1 h-2 bg-gray-200 dark:bg-gray-700 rounded-full overflow-hidden">
+											<div
+												class="h-full bg-gradient-to-r from-green-500 to-emerald-500 rounded-full"
+												style={`width: ${(contributor.commits / totalCommits) * 100}%`}
+											/>
+										</div>
+									</div>
+								</div>
+							</div>
+						))}
+					</div>
+				</div>
+			</Container>
+		</Section>
+
+		<!-- Recent Activity -->
+		<Section spacing="large" class="relative">
+			<Container>
+				<Heading as="h2" size="3" class="mb-8">Letzte Aktivität</Heading>
+
+				<div class="space-y-4">
+					{sortedPosts.slice(-5).reverse().map((post) => (
+						<a
+							href={`/devlog/${post.slug}`}
+							class="block bg-white/90 dark:bg-gray-800/90 backdrop-blur-sm rounded-xl p-4 border border-gray-200 dark:border-gray-700 hover:border-mana-blue/50 transition-colors"
+						>
+							<div class="flex items-center justify-between">
+								<div>
+									<Text weight="semibold" class="mb-1">{post.data.title}</Text>
+									<div class="flex items-center gap-4 text-sm text-gray-500">
+										<span>
+											<Icon name="mdi:calendar" class="w-4 h-4 inline mr-1" />
+											{formatDate(post.data.date)}
+										</span>
+										<span>
+											<Icon name="mdi:source-commit" class="w-4 h-4 inline mr-1" />
+											{post.data.commits} Commits
+										</span>
+										{post.data.stats && (
+											<span class="text-green-600 dark:text-green-400">
+												+{formatNumber(post.data.stats.linesAdded)}
+											</span>
+										)}
+										{post.data.stats && (
+											<span class="text-red-600 dark:text-red-400">
+												-{formatNumber(post.data.stats.linesRemoved)}
+											</span>
+										)}
+									</div>
+								</div>
+								<Icon name="mdi:chevron-right" class="w-5 h-5 text-gray-400" />
+							</div>
+						</a>
+					))}
+				</div>
+			</Container>
+		</Section>
+
+		<Footer />
+	</div>
+</Layout>

apps/manacore/apps/landing/src/pages/devlog/index.astro

@@ -106,6 +106,25 @@ const formatDate = (date: Date) => {
 			</div>
 
 			<Container class="relative z-10">
+				<!-- Activity Link -->
+				<div class="max-w-4xl mx-auto mb-8">
+					<a
+						href="/devlog/activity"
+						class="group flex items-center justify-between bg-gradient-to-r from-green-500/10 to-emerald-500/10 hover:from-green-500/20 hover:to-emerald-500/20 border border-green-500/30 rounded-xl p-4 transition-all"
+					>
+						<div class="flex items-center gap-3">
+							<div class="w-10 h-10 rounded-lg bg-gradient-to-br from-green-500/20 to-emerald-500/20 flex items-center justify-center">
+								<Icon name="mdi:chart-timeline-variant" class="w-5 h-5 text-green-600 dark:text-green-400" />
+							</div>
+							<div>
+								<Text weight="semibold" class="text-green-700 dark:text-green-300">Aktivitäts-Übersicht</Text>
+								<Text size="sm" class="text-green-600/70 dark:text-green-400/70">Contribution Grid, Stats & Contributors</Text>
+							</div>
+						</div>
+						<Icon name="mdi:arrow-right" class="w-5 h-5 text-green-600 dark:text-green-400 group-hover:translate-x-1 transition-transform" />
+					</a>
+				</div>
+
 				<div class="max-w-4xl mx-auto space-y-8">
 					{
 						sortedPosts.map((post) => {

docs/DEVLOG_GUIDELINES.md

@@ -35,6 +35,23 @@ tags:
 featured: true # oder false
 commits: 42 # Anzahl der Commits an diesem Tag
 readTime: 15 # Geschätzte Lesezeit in Minuten
+
+# Extended Stats für Aktivitätsgrid
+stats:
+  filesChanged: 289
+  linesAdded: 17857
+  linesRemoved: 2113
+
+# Contributors (wer hat an diesem Tag gearbeitet)
+contributors:
+  - name: 'Till Schneider'
+    handle: 'Till-JS'
+    commits: 42
+
+# Working Hours (für Aktivitätsgrid)
+workingHours:
+  start: '2026-01-30T11:00'
+  end: '2026-01-31T11:00'
 ---
 ```
 
@@ -56,13 +73,26 @@ readTime: 15 # Geschätzte Lesezeit in Minuten
 4. **Zusammenfassung** - Tabelle mit Bereichen, Commit-Anzahl und Highlights
 5. **Nächste Schritte** - Was als nächstes geplant ist
 
-## Commit-Zählung
+## Git-Stats abrufen
 
 ```bash
 # Commits für einen Arbeitstag zählen (11:00 - 11:00 des Folgetages)
-git log --since="YYYY-MM-DD 11:00" --until="YYYY-MM-DD+1 10:59" --oneline | wc -l
+git log --since="YYYY-MM-DD 11:00" --until="YYYY-MM-DD+1 11:00" --oneline | wc -l
+
+# Detaillierte Stats (files, insertions, deletions)
+git log --since="YYYY-MM-DD 11:00" --until="YYYY-MM-DD+1 11:00" --shortstat --format="" | \
+  awk '{files+=$1; ins+=$4; del+=$6} END {print "files:", files, "insertions:", ins, "deletions:", del}'
 ```
 
+## Aktivitätsgrid
+
+Die Aktivitätsgrid-Seite ist unter `/devlog/activity` erreichbar und zeigt:
+
+- **GitHub-Style Contribution Grid** - Aktivität der letzten 365 Tage
+- **Gesamt-Statistiken** - Commits, Dateien, Lines Added/Removed
+- **Contributors** - Wer hat wie viel beigetragen
+- **Letzte Aktivität** - Die 5 neuesten Devlogs
+
 ## Best Practices
 
 - Technische Details mit Code-Beispielen und Architektur-Diagrammen illustrieren