Initial homelab infrastructure

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

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+# Copy to .env and fill in. Never commit .env to git.
+
+# Let's Encrypt / Traefik
+ACME_EMAIL=
+
+# Pi-hole admin password
+PIHOLE_PASSWORD=
+
+# Traefik basic auth – generate: htpasswd -nb username password
+# Then add to traefik/dynamic.yml middlewares.auth.basicAuth.users
+TRAEFIK_AUTH_USERS=
+
+# WOL API & Dashboard
+WOL_API_USER=
+WOL_API_PASS=
+# WEATHER_API_KEY=  # OpenWeatherMap – optional for dashboard
+# WEATHER_CITY=
+# WOL_DEVICES=desktop:AA:BB:CC:DD:EE:FF:192.168.1.10 (name:mac:ip)
+# WOL_BROADCAST_IP=192.168.0.255
+
+# Drone CI (Gitea OAuth app, redirect https://drone.zea.lt/login)
+DRONE_GITEA_CLIENT_ID=
+DRONE_GITEA_CLIENT_SECRET=
+DRONE_RPC_SECRET=
+DRONE_ADMIN_USER=
+
+# CUPS printer admin
+CUPSADMIN=admin
+CUPSPASSWORD=