refactor: improve punctuation and grammar consistency across components

- Replaced em dashes with commas for better readability in descriptions
- Standardized punctuation in aria-labels (changed "—" to ",")
- Removed unnecessary em dashes in favor of commas or removed punctuation
- Fixed inconsistent spacing around punctuation marks
- Improved sentence flow in multiple component descriptions

src/pages/agents/animations/Herodb.tsx

@@ -175,7 +175,7 @@ export default function Herodb({
       className={clsx("relative overflow-hidden", className)}
       aria-hidden="true"
       role="img"
-      aria-label="HeroDB — active AI memory retrieval"
+      aria-label="HeroDB, active AI memory retrieval"
       style={{ background: bg }}
     >
       <svg viewBox={`0 0 ${W} ${H}`} className="w-full h-full" preserveAspectRatio="xMidYMid slice">