- Rewrite haus-schleusingen.js entirely in vanilla JavaScript
- Use IntersectionObserver instead of scroll event for scroll animations
- Replace jQuery slideUp/slideDown with display toggle for accordion
- Replace jQuery fadeIn with CSS opacity transition for form success
- Remove jQuery CDN script tag from haus-schleusingen.html
- Delete unused masonry.pkgd.min.js
- Remove jquery globals from eslint.config.js
Ref #19
- Generate mailto: link with all form data on submit
- Opens user's email client with pre-filled email to mki@kies-media.de
- Subject includes interest type, body contains all form fields
- Update success message to reflect email client behavior
- Remove fake setTimeout simulation
Fix#15
