fix(changelog): match tabs to actual API commitCategory values

The server-side patch isn't fully applied — the API returns commitCategory
values "chores" and "refactor" instead of "performance"/"accessibility"/"other".
Updated tabs, labels, and colors to match the live API response.

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

changelog.njk

@@ -120,28 +120,25 @@ function changelogApp() {
       { key: 'all', label: 'All' },
       { key: 'features', label: 'Features' },
       { key: 'fixes', label: 'Fixes' },
-      { key: 'performance', label: 'Performance' },
-      { key: 'accessibility', label: 'Accessibility' },
       { key: 'documentation', label: 'Docs' },
-      { key: 'other', label: 'Other' },
+      { key: 'chores', label: 'Chores' },
+      { key: 'refactor', label: 'Refactor' },
     ],
 
     categoryLabels: {
       features: 'Features',
       fixes: 'Fixes',
-      performance: 'Performance',
-      accessibility: 'Accessibility',
       documentation: 'Docs',
-      other: 'Other',
+      chores: 'Chores',
+      refactor: 'Refactor',
     },
 
     categoryColors: {
       features: 'bg-green-100 dark:bg-green-900 text-green-700 dark:text-green-300',
       fixes: 'bg-orange-100 dark:bg-orange-900 text-orange-700 dark:text-orange-300',
-      performance: 'bg-blue-100 dark:bg-blue-900 text-blue-700 dark:text-blue-300',
-      accessibility: 'bg-purple-100 dark:bg-purple-900 text-purple-700 dark:text-purple-300',
       documentation: 'bg-yellow-100 dark:bg-yellow-900 text-yellow-700 dark:text-yellow-300',
-      other: 'bg-surface-100 dark:bg-surface-800 text-surface-700 dark:text-surface-300',
+      chores: 'bg-surface-100 dark:bg-surface-800 text-surface-700 dark:text-surface-300',
+      refactor: 'bg-blue-100 dark:bg-blue-900 text-blue-700 dark:text-blue-300',
     },
 
     get canLoadMore() {