fix(ui): improve hljs code token contrast and suite card border visibility

- hljs-string/title/attribute/symbol/bullet/addition: use --primary/0.85
  instead of --accent (which is hsl(214 70% 96%) in light mode — nearly
  invisible on white background)
- suite-detail entry skill card: remove border-border/70 from border-y,
  using default border color for better visibility

Made-with: Proma

web/src/index.css

@@ -506,7 +506,7 @@
 .hljs-symbol,
 .hljs-bullet,
 .hljs-addition {
-  color: hsl(var(--accent) / 0.9);
+  color: hsl(var(--primary) / 0.85);
 }
 
 .hljs-number,

web/src/pages/suite-detail.tsx

@@ -168,7 +168,7 @@ export function SuiteDetailPage() {
                 <section>
                   <h2 className="text-sm font-semibold">{t('suite.startWithEntry')}</h2>
                   <p className="mt-1 text-xs leading-5 text-muted-foreground">{t('suite.entrySnapshotDescription')}</p>
-                  <div className="mt-3 border-y border-border/70 py-3">
+                  <div className="mt-3 border-y py-3">
                     <p className="truncate text-sm font-medium">
                       {entryMember.displayName || `@${entryMember.namespace}/${entryMember.slug}`}
                     </p>