Fix issue short-id vertical alignment in EntityRow

Add position: relative with top: 1px to the identifier span
so "PAP-38" style labels align properly in issue tables.

PAP-39

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

ui/src/components/EntityRow.tsx

@@ -36,7 +36,7 @@ export function EntityRow({
       <div className="flex-1 min-w-0">
         <div className="flex items-center gap-2">
           {identifier && (
-            <span className="text-xs text-muted-foreground font-mono shrink-0">
+            <span className="text-xs text-muted-foreground font-mono shrink-0 relative top-[1px]">
               {identifier}
             </span>
           )}