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

src/app/admin/prefixes/prefixes-client.tsx

@@ -186,15 +186,16 @@ function PrefixDialog({
 						{hasMultiColor ? (
 							<span>
 								{"{"}
-								{[...(form.text || "...")].map((char, i) => (
-									// biome-ignore lint/suspicious/noArrayIndexKey: char position drives color slot
-									<span
-										key={i}
-										style={{ color: colors[Math.min(i, colors.length - 1)] }}
-									>
-										{char}
-									</span>
-								))}
+								{[...(form.text || "...")]
+									.map((char, i) => ({ char, n: i }))
+									.map(({ char, n }) => (
+										<span
+											key={`char-${n}`}
+											style={{ color: colors[Math.min(n, colors.length - 1)] }}
+										>
+											{char}
+										</span>
+									))}
 								{"}"}
 							</span>
 						) : (
@@ -546,7 +547,7 @@ export function PrefixesClient({ canEdit }: { canEdit: boolean }) {
 														{[...prefix.text].map((char, i) => (
 															<span
 																// biome-ignore lint/suspicious/noArrayIndexKey: char position drives color slot
-																key={i}
+																key={`char-${i}`}
 																style={{
 																	color: colors[Math.min(i, colors.length - 1)],
 																}}
@@ -570,7 +571,7 @@ export function PrefixesClient({ canEdit }: { canEdit: boolean }) {
 												{colors.slice(0, 5).map((c, i) => (
 													<div
 														// biome-ignore lint/suspicious/noArrayIndexKey: color preview slots, position is identity
-														key={i}
+														key={`color-${i}`}
 														className="w-4 h-4 rounded border"
 														style={{ backgroundColor: c }}
 														title={c}