Removes the standalone toolbar severity <select> and instead builds a
second <thead> row in JS with a text input (debounced 300 ms) per
column and a <select> for icon-only columns (severity_icon, status).
All active column filters apply together (AND logic). Adds data-col
attributes to <th> elements so JS can identify columns by name.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Replace warm serif theme with Semantic UI-inspired design:
white background, Lato font, subtle transparent borders
- Section cards become transparent wrappers with standalone h2
headings; tables carry their own border and shadow
- Status indicators replaced with plain colored symbols
(✓ ✗ ! ? –) — no badge backgrounds
- Remove section nav (table of contents)
- Fix HTML: remove redundant div in header, error section
tag → div[role=alert], add aria-label to nav
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
