Adam SmithandClaude Sonnet 5
914c89dc6b
New url_util.py (deliberately separate from the vendored files, so a future upstream re-sync never conflicts with it): normalize_base_url strips whitespace/trailing slashes and rejects non-http(s) or hostless URLs; sanitize_url_for_logging masks embedded basic-auth credentials for Task 7's discovery logging. Wires normalization into config_flow.validate_input before the client is built, with a new invalid_base_url form error. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01739Seac5eMAfNwFeiwV5r4