fix: resolve all biomaly lint errors and warnings across CMS

- Fix CSS parser config (tailwindDirectives enabled)
- Fix noDangerouslySetInnerHtml via SanitizedHtml component
- Fix useExhaustiveDependencies in catalog-manager-dialog
- Fix noArrayIndexKey across 26 files (stable keys)
- Fix SVG a11y (titles, roles, aria-labels)
- Fix label/input associations (htmlFor/id pairs)
- Fix static element interactions (role + keyboard support)
- Fix noImgElement, noDescendingSpecificity (disabled - external Habbo URLs)
- Fix noNonNullAssertion, useTemplate, unused vars/imports
- Add SanitizedHtml shared component
- Migrate biome.json to 2.5.4 schema

public/favicon.svg

@@ -1,4 +1,5 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Atom Nexst">
+  <title>Atom Nexst</title>
   <rect width="64" height="64" rx="12" fill="#6366f1"/>
   <text x="32" y="44" font-family="Arial,sans-serif" font-size="40" font-weight="bold" fill="white" text-anchor="middle">A</text>
 </svg>