feat: Setup Wizard for first-run configuration

Container starts with only DB credentials. On first visit, a step-by-step
wizard guides through admin password, weather, HA, Vikunja, Unraid, MQTT,
n8n and news configuration. Backward-compat: ADMIN_PASSWORD env skips wizard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -3,37 +3,21 @@ services:
     build: .
     container_name: daily-briefing
     ports:
-      - "8080:8080"
+      - "9080:8080"
     environment:
-      # ── Required: Database (PostgreSQL) ──
+      # ── Required: Database (external PostgreSQL) ──
       - DB_HOST=10.10.10.10
       - DB_PORT=5433
       - DB_NAME=openclaw
       - DB_USER=sam
       - DB_PASSWORD=sam
 
-      # ── Required: Admin Panel ──
-      - ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
-      - JWT_SECRET=${JWT_SECRET:-}
+      # ── Optional: skip setup wizard by providing ADMIN_PASSWORD ──
+      # - ADMIN_PASSWORD=your-password
+      # - JWT_SECRET=optional-fixed-secret
 
-      # ── Seed Values (used on first start only, then DB takes over) ──
-      # Weather
-      - WEATHER_LOCATION=Leverkusen
-      - WEATHER_LOCATION_SECONDARY=Rab,Croatia
-      # Home Assistant
-      - HA_URL=https://homeassistant.daddelolymp.de
-      - HA_TOKEN=${HA_TOKEN}
-      # Vikunja Tasks
-      - VIKUNJA_URL=http://10.10.10.10:3456/api/v1
-      - VIKUNJA_TOKEN=${VIKUNJA_TOKEN}
-      # Unraid Servers (JSON array)
-      - UNRAID_SERVERS=${UNRAID_SERVERS:-[]}
-      # MQTT (optional)
-      - MQTT_HOST=${MQTT_HOST:-}
-      - MQTT_PORT=${MQTT_PORT:-1883}
-      - MQTT_USERNAME=${MQTT_USERNAME:-}
-      - MQTT_PASSWORD=${MQTT_PASSWORD:-}
-      - MQTT_TOPICS=${MQTT_TOPICS:-#}
+      # ── All integrations are configured via the web setup wizard ──
+      # Visit http://host:9080 on first start to complete setup.
     extra_hosts:
       - "host.docker.internal:host-gateway"
     restart: always