Prepare mobile de parser preview

.env.example

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+# mobile.de scraper Docker defaults
+
+# PostgreSQL used by docker-compose.
+POSTGRES_USER=mobilede
+POSTGRES_PASSWORD=mobilede
+POSTGRES_DB=mobilede_scraper
+MOBILEDE_DATABASE_URL=postgresql+psycopg2://mobilede:mobilede@postgres:5432/mobilede_scraper
+
+# Legacy env names still consumed by Settings until the old IAAI core is fully removed.
+IAAI_DATABASE_URL=postgresql+psycopg2://mobilede:mobilede@postgres:5432/mobilede_scraper
+IAAI_DATABASE_ECHO=false
+IAAI_DATABASE_POOL_SIZE=5
+IAAI_DATABASE_MAX_OVERFLOW=5
+IAAI_DATABASE_POOL_RECYCLE_SECONDS=1800
+
+# Redis / Celery stack.
+IAAI_REDIS_URL=redis://redis:6379/0
+CELERY_BROKER_URL=redis://redis:6379/0
+CELERY_RESULT_BACKEND=redis://redis:6379/0
+CELERY_TASK_SOFT_TIME_LIMIT=86400
+CELERY_TASK_TIME_LIMIT=86520
+CELERY_BROKER_VISIBILITY_TIMEOUT=90000
+CELERY_WORKER_CONCURRENCY=1
+CELERY_BEAT_SYNC_INTERVAL_MINUTES=60
+IAAI_STARTUP_SYNC_ENABLED=true
+MOBILEDE_STARTUP_MAX_PAGES=5
+MOBILEDE_BEAT_MAX_PAGES=5
+
+# mobile.de one-shot CLI services.
+MOBILEDE_SEARCH_START_PAGE=1
+MOBILEDE_SEARCH_MAX_PAGES=1
+MOBILEDE_REQUEST_DELAY_SECONDS=0.7
+MOBILEDE_SYNC_LANE=mobile_de_cars
+MOBILEDE_LISTING_ID=449929602
+
+# Logging / runtime.
+IAAI_LOG_LEVEL=INFO
+IAAI_RUNTIME_CONFIG_FILE=/app/runtime_config.json
+TZ=UTC
+
+# Legacy browser settings kept for old deprecated IAAI commands only.
+IAAI_HEADLESS=true
+IAAI_BROWSER_ENGINE=chromium
+IAAI_TOKENS_FILE=/data/tokens.json
+IAAI_SELF_HEAL_ENABLED=true