UI Improvements

Improvements

• You can now use uppercase letters in data flow names, giving you more freedom to match your existing naming conventions
• Delete buttons (like "Remove Level" in location forms) now use a warning color with appropriate hover states, making destructive actions more visually distinct
• The Docker install command for local umh-core now uses Docker named volumes instead of bind mounts, working consistently across Docker Desktop (Mac/Windows), native Linux, and Podman

Fixes

• Validation error messages in protocol configuration forms now display below input fields instead of beside them on narrow screens
• Fixed a visual glitch where the sidebar would briefly "pop in" when loading pages in Chrome
• Fixed inconsistent padding and hover states on icon buttons in side panels
• Fixed the chevron/arrow icon not displaying correctly when adding a stream processor
• Fixed the height and hover area of the sidebar collapse/expand toggle button