Simplify DDNS flow and polish UI

router_dyndns/config.py

@@ -9,14 +9,11 @@ from .ddns_models import DdnsSettings
 def settings_from_env() -> DdnsSettings:
     return DdnsSettings(
         database_path=Path(os.getenv("DDNS_DATABASE", "ddns.sqlite3")),
-        shared_secret=os.getenv("DDNS_SHARED_SECRET", ""),
         admin_password=os.getenv("DDNS_ADMIN_PASSWORD", ""),
         admin_path=os.getenv("DDNS_ADMIN_PATH", "/admin"),
-        allowed_hosts=_csv_set("DDNS_ALLOWED_HOSTS"),
         public_base_url=os.getenv("DDNS_PUBLIC_BASE_URL", "http://localhost:8080"),
         trusted_hosts=_csv_set("DDNS_TRUSTED_HOSTS"),
         hostname_suffix=os.getenv("DDNS_HOSTNAME_SUFFIX", ""),
-        verification_prefix=os.getenv("DDNS_VERIFICATION_PREFIX", "_karldns"),
         rate_limit_per_minute=_env_int("DDNS_RATE_LIMIT_PER_MINUTE", 60),
         admin_rate_limit_per_minute=_env_int("DDNS_ADMIN_RATE_LIMIT_PER_MINUTE", 20),
         max_request_body_bytes=_env_int("DDNS_MAX_REQUEST_BODY_BYTES", 16_384),
@@ -30,7 +27,6 @@ def settings_from_env() -> DdnsSettings:
         require_dns_provider=_env_flag("DDNS_REQUIRE_DNS_PROVIDER"),
         cloudflare_api_token=os.getenv("DDNS_CLOUDFLARE_API_TOKEN", ""),
         cloudflare_zone_id=os.getenv("DDNS_CLOUDFLARE_ZONE_ID", ""),
-        cleanup_challenge_hours=_env_int("DDNS_CLEANUP_CHALLENGE_HOURS", 72),
         cleanup_unused_account_hours=_env_int("DDNS_CLEANUP_UNUSED_ACCOUNT_HOURS", 1080),
         cleanup_event_history_hours=_env_int("DDNS_CLEANUP_EVENT_HISTORY_HOURS", 24 * 180),
         cleanup_interval_seconds=_env_int("DDNS_CLEANUP_INTERVAL_SECONDS", 3600),