Polish UI components and rework AgentConfigForm

Major AgentConfigForm rework with improved adapter configuration
fields and layout. Refine sidebar, breadcrumbs, and card/tab
components for visual consistency. Clean up page layouts across
Activity, Agents, Approvals, Costs, Dashboard, Goals, Inbox,
Issues, Org, and Projects pages. Minor heartbeat-run CLI fix.

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

ui/src/pages/MyIssues.tsx

@@ -38,8 +38,6 @@ export function MyIssues() {
 
   return (
     <div className="space-y-4">
-      <h2 className="text-lg font-semibold">My Issues</h2>
-
       {isLoading && <p className="text-sm text-muted-foreground">Loading...</p>}
       {error && <p className="text-sm text-destructive">{error.message}</p>}
 
@@ -48,7 +46,7 @@ export function MyIssues() {
       )}
 
       {myIssues.length > 0 && (
-        <div className="border border-border rounded-md">
+        <div className="border border-border">
           {myIssues.map((issue) => (
             <EntityRow
               key={issue.id}