Fix WCAG AA color contrast violations across all pages

Replace incorrect perceived-brightness formula in Stats progress bars
with proper WCAG relative luminance calculation, and convert type bar
colors to hex values for reliable contrast detection. Add light: variant
classes to status badges, yellow/purple text, and admin nav links across
17 files. Darken light-mode status-active token and text-tertiary/muted
tokens. Add aria-labels to admin filter selects and flex-wrap for mobile
overflow on AdminEvolutions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/GenlockeList.tsx

@@ -3,9 +3,9 @@ import { useGenlockes } from '../hooks/useGenlockes'
 import type { RunStatus } from '../types'
 
 const statusStyles: Record<RunStatus, string> = {
-  active: 'bg-green-900/40 text-green-300',
-  completed: 'bg-blue-900/40 text-blue-300',
-  failed: 'bg-red-900/40 text-red-300',
+  active: 'bg-green-900/40 text-green-300 light:bg-green-100 light:text-green-800',
+  completed: 'bg-blue-900/40 text-blue-300 light:bg-blue-100 light:text-blue-800',
+  failed: 'bg-red-900/40 text-red-300 light:bg-red-100 light:text-red-800',
 }
 
 export function GenlockeList() {