fix: use subtle cyan pill for Manage Templates link, fix editor scroll

Replace pulsing dot with a light cyan background pill that's visible
but not distracting. Remove overflow-hidden from ScriptBodyEditor
wrapper so the textarea content scrolls properly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/script-editor/ScriptBodyEditor.tsx

@@ -26,7 +26,7 @@ export function ScriptBodyEditor({ value, onChange, disabled }: Props) {
   }, [value, onChange])
 
   return (
-    <div className="relative rounded-xl border border-border overflow-hidden">
+    <div className="relative rounded-xl border border-border">
       {/* Highlighted overlay (read-only visual layer) */}
       <div className="absolute inset-0 pointer-events-none overflow-auto p-4">
         <PowerShellHighlighter script={value || ' '} />

frontend/src/pages/ScriptLibraryPage.tsx

@@ -53,12 +53,9 @@ export default function ScriptLibraryPage() {
         {isEngineer && (
           <Link
             to="/scripts/manage"
-            className="inline-flex items-center gap-1.5 text-xs text-muted-foreground hover:text-foreground transition-colors mt-2 group"
+            className="inline-flex items-center gap-1.5 text-xs text-primary bg-primary/10 hover:bg-primary/15 px-2.5 py-1 rounded-full transition-colors mt-2 group"
           >
-            <span className="relative">
-              <Settings size={12} className="group-hover:rotate-90 transition-transform duration-300" />
-              <span className="absolute -top-0.5 -right-0.5 h-1.5 w-1.5 rounded-full bg-primary animate-pulse" />
-            </span>
+            <Settings size={12} className="group-hover:rotate-90 transition-transform duration-300" />
             Manage Templates
           </Link>
         )}