feat: Add Vector stores UI (#2737)

# What does this PR do?
- Adds two pages to UI
  - Vector stores
  - Vector store detail view
- Fixed darkmode navbar highlighting
- Updated darkmode font color
- Updated llama-stack-client package

<img width="1916" height="734" alt="Screenshot 2025-07-12 at 11 34
35 PM"
src="https://github.com/user-attachments/assets/3f9b6727-ee82-4e6b-9555-2e3ef36d24d2"
/>

<img width="1912" height="910" alt="Screenshot 2025-07-12 at 11 57
09 PM"
src="https://github.com/user-attachments/assets/0c9d3b5e-5592-4dfb-8e04-a57edc9fb406"
/>


## Test Plan
<!-- Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.* -->

---------

Signed-off-by: Francisco Javier Arceo <farceo@redhat.com>

llama_stack/ui/components/layout/detail-layout.tsx

@@ -93,7 +93,9 @@ export function PropertyItem({
     >
       <strong>{label}:</strong>{" "}
       {typeof value === "string" || typeof value === "number" ? (
-        <span className="text-gray-900 font-medium">{value}</span>
+        <span className="text-gray-900 dark:text-gray-100 font-medium">
+          {value}
+        </span>
       ) : (
         value
       )}
@@ -112,7 +114,9 @@ export function PropertiesCard({ children }: PropertiesCardProps) {
         <CardTitle>Properties</CardTitle>
       </CardHeader>
       <CardContent>
-        <ul className="space-y-2 text-sm text-gray-600">{children}</ul>
+        <ul className="space-y-2 text-sm text-gray-600 dark:text-gray-400">
+          {children}
+        </ul>
       </CardContent>
     </Card>
   );