feat: ATM10-Statistikportal

Statistikportal für den All-the-Mods-10-Server (Minecraft 1.21.1, NeoForge 21.1):

- mod/: serverseitige NeoForge-Mod atmstats – Ereignisse, Live-Zähler, Servergesundheit,
  FTB-Dateien; Outbox auf der Festplatte, signierter gzip-Versand per HTTPS mit Backoff
- backend/: Fastify + PostgreSQL – idempotenter Ingest, Projektionen, Parser für SNBT,
  FTB Quests/Teams, world/stats, world/advancements und latest.log; Ranglisten, Snapshots,
  Retention, öffentliche API, SSE-Live-Updates, Admin mit argon2/CSRF, SFTP-Worker
- web/: Next.js-Dashboard – Übersicht, Ranglisten, Spielerprofile, ATM10, Server,
  Datenquellen, Verwaltung
- shared/: Protokoll v1 und API-Typen; tools/: Simulator, Log-Anonymisierer, RCON-Client
- deploy/: Docker Compose hinter Traefik, Backup; docs/: Architektur, Datenquellen, Betrieb

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/test/ActivityHeatmap.test.tsx

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+import { render, screen } from '@testing-library/react';
+import { describe, expect, it } from 'vitest';
+import { ActivityHeatmap } from '@/components/ActivityHeatmap';
+
+describe('ActivityHeatmap', () => {
+  it('renders 168 cells with aria labels', () => {
+    const grid = Array.from({ length: 7 }, () => Array.from({ length: 24 }, () => 0));
+    grid[0]![20] = 45;
+    grid[6]![9] = 5;
+    render(<ActivityHeatmap grid={grid} />);
+    const cells = screen.getAllByRole('img');
+    expect(cells).toHaveLength(168);
+    expect(screen.getByRole('img', { name: 'Montag, 20 Uhr: 45 Minuten' })).toBeInTheDocument();
+    expect(screen.getByRole('img', { name: 'Sonntag, 9 Uhr: 5 Minuten' })).toBeInTheDocument();
+  });
+
+  it('shows an empty note when there is no activity', () => {
+    const grid = Array.from({ length: 7 }, () => Array.from({ length: 24 }, () => 0));
+    render(<ActivityHeatmap grid={grid} />);
+    expect(screen.getByText('In den letzten 90 Tagen keine Sitzungen erfasst.')).toBeInTheDocument();
+  });
+});

web/test/LeaderboardCard.test.tsx

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+import { render, screen, within } from '@testing-library/react';
+import { describe, expect, it } from 'vitest';
+import { LeaderboardCard } from '@/components/LeaderboardCard';
+
+const board = { id: 'deaths', title: 'Friedhof', description: 'Häufigste Tode', unit: 'count' as const };
+const entries = Array.from({ length: 10 }, (_, i) => ({
+  rank: i + 1,
+  uuid: `00000000-0000-4000-8000-00000000000${i}`,
+  name: `Spieler${i}`,
+  value: 100 - i,
+}));
+
+describe('LeaderboardCard', () => {
+  it('renders 10 rows with names, values and a link to the full board', () => {
+    render(<LeaderboardCard board={board} entries={entries} />);
+    const rows = screen.getAllByRole('listitem');
+    expect(rows).toHaveLength(10);
+    expect(within(rows[0]!).getByText('Spieler0')).toBeInTheDocument();
+    expect(within(rows[0]!).getByText('100')).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: /Friedhof/ })).toHaveAttribute('href', '/leaderboards/deaths');
+    expect(rows[0]!.querySelector('a')).toHaveAttribute('href', '/players/Spieler0');
+  });
+
+  it('renders an empty state', () => {
+    render(<LeaderboardCard board={board} entries={[]} />);
+    expect(screen.queryAllByRole('listitem')).toHaveLength(0);
+    expect(screen.getByText('Noch keine Daten')).toBeInTheDocument();
+  });
+});

web/test/format.test.ts

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+import { describe, expect, it } from 'vitest';
+import { formatCount, formatDuration, formatHours, formatKm, formatRelative, formatUnit, prettyId } from '@/lib/format';
+
+describe('format', () => {
+  it('formats counts with German grouping', () => {
+    expect(formatCount(1234)).toBe('1.234');
+    expect(formatCount(1234567)).toBe('1.234.567');
+    expect(formatCount(0)).toBe('0');
+  });
+
+  it('formats hours with one decimal and unit', () => {
+    expect(formatHours(1175736 / 72000)).toBe('16,3 h');
+    expect(formatHours(1234.5)).toBe('1.234,5 h');
+  });
+
+  it('formats kilometres', () => {
+    expect(formatKm(2)).toBe('2,0 km');
+    expect(formatKm(32.337)).toBe('32,3 km');
+  });
+
+  it('formats by board unit', () => {
+    expect(formatUnit(16.33, 'hours')).toBe('16,3 h');
+    expect(formatUnit(5, 'count')).toBe('5');
+    expect(formatUnit(1200, 'blocks')).toBe('1.200');
+    expect(formatUnit(2, 'km')).toBe('2,0 km');
+  });
+
+  it('formats relative times', () => {
+    const now = Date.UTC(2026, 9, 13, 12, 0, 0);
+    expect(formatRelative(now - 20_000, now)).toBe('gerade eben');
+    expect(formatRelative(now - 5 * 60_000, now)).toBe('vor 5 Min.');
+    expect(formatRelative(now - 3 * 3600_000, now)).toBe('vor 3 Std.');
+    expect(formatRelative(now - 2 * 86_400_000, now)).toBe('vor 2 Tagen');
+    expect(formatRelative(null, now)).toBe('nie');
+  });
+
+  it('formats durations', () => {
+    expect(formatDuration(45 * 60_000)).toBe('45 Min.');
+    expect(formatDuration(125 * 60_000)).toBe('2 Std. 5 Min.');
+  });
+
+  it('turns resource ids into readable names', () => {
+    expect(prettyId('minecraft:wither_skeleton')).toBe('Wither Skeleton');
+    expect(prettyId('minecraft:play_time')).toBe('Play Time');
+    expect(prettyId('allthemodium:the_other')).toBe('The Other');
+  });
+});

web/test/setup.ts

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+import '@testing-library/jest-dom/vitest';
+import { cleanup } from '@testing-library/react';
+import { afterEach } from 'vitest';
+
+afterEach(cleanup);