chore(analytics): Umami-Kern entfernen — Injection, Client-Lib, Auth-Hook, Container, DB

Erster Schritt der Umami-Komplett-Entfernung (Entscheidung: kein Web-Analytics):
- hooks.server.ts: injectUmamiAnalytics-Injection raus (stoppt Script-Load in der Unified-App)
- packages/shared-utils/analytics-server.ts: GELÖSCHT (Script-Injection-Util)
- packages/shared-utils/analytics.ts: zu No-op entkernt — window.umami/isUmamiAvailable
  raus, trackEvent no-op; alle 28 *Events-Aufrufer kompilieren weiter (senden nichts)
- packages/shared-auth/authService.ts: inline-Umami-trackAuth-Hook + Aufrufe raus
- infrastructure/docker-compose.gpu-box.yml: umami-Service (mana-mon-umami) raus
- docker/init-db: CREATE DATABASE umami + GRANT raus
- gelöscht: docs/ANALYTICS.md, scripts/mac-mini/setup-umami-db.sh, picture-landing .env.example

VERBLEIBEND (separat, größer): ~60 weitere Dateien — 7 Landing-Layout.astro
(eigene Script-Injection), website-blocks Analytics-Feature, Legal/Datenschutz,
i18n×5, Admin-UI, ~20 Docs. Teils produkt-/rechts-sensibel → in Wellen.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/mac-mini/setup-umami-db.sh

@@ -1,27 +0,0 @@
-#!/bin/bash
-# Setup Umami database on Mac Mini
-# Run this script after starting PostgreSQL container
-
-set -e
-
-echo "Creating Umami database..."
-
-# Check if running inside docker network or from host
-if docker ps | grep -q mana-postgres; then
-    docker exec -i mana-postgres psql -U postgres <<EOF
-SELECT 'CREATE DATABASE umami' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'umami')\gexec
-EOF
-    echo "Umami database created successfully!"
-else
-    echo "Error: PostgreSQL container 'mana-postgres' is not running"
-    echo "Please start it with: docker compose -f docker-compose.macmini.yml up -d postgres"
-    exit 1
-fi
-
-echo ""
-echo "Next steps:"
-echo "1. Start Umami: docker compose -f docker-compose.macmini.yml up -d umami"
-echo "2. Access Umami at: https://stats.mana.how"
-echo "3. Default login: admin / umami"
-echo "4. Change the password immediately!"
-echo "5. Create websites and get tracking IDs for your apps"