feat: bold dashboard redesign with inline stats, section labels, and chip icons

Restructure QuickStartPage for a more professional, informative layout:
- Left-aligned hero greeting (text-4xl) with date context and inline stat strip
- GreetingStatStrip shows resolved/active/MTTR at a glance
- Remove collapsible toggle — dashboard stats always visible
- Section labels with trailing border lines for visual hierarchy
- Suggestion chips with category icons, card-style hover, press feedback
- Fix cyan focus ring and icon color to ember orange design system
- Session cards: line-clamp-2 descriptions, font-medium text, problem_domain metadata
- Widen container max-w-3xl → max-w-4xl for breathing room
- Add .impeccable.md and .github/copilot-instructions.md design context
- CLAUDE.md audit: fix stale references, remove duplication, update counts

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

frontend/src/components/dashboard/RecentFlowPilotSessions.tsx

@@ -22,7 +22,7 @@ const STATUS_CONFIG: Record<string, { icon: typeof CheckCircle; color: string }>
   abandoned: { icon: XCircle, color: '#8891a0' },
 }
 
-export function RecentFlowPilotSessions() {
+export function RecentFlowPilotSessions({ hideHeader = false }: { hideHeader?: boolean }) {
   const [sessions, setSessions] = useState<AISessionSummary[]>([])
   const navigate = useNavigate()
 
@@ -42,18 +42,20 @@ export function RecentFlowPilotSessions() {
 
   return (
     <div className="card-flat">
-      <div
-        className="flex items-center justify-between px-5 py-3"
-        style={{ borderBottom: '1px solid var(--color-border-default)' }}
-      >
-        <h3 className="font-heading text-sm font-bold text-foreground">Recent Sessions</h3>
-        <Link
-          to="/sessions"
-          className="flex items-center gap-1 text-[0.6875rem] text-muted-foreground hover:text-foreground transition-colors"
+      {!hideHeader && (
+        <div
+          className="flex items-center justify-between px-5 py-3"
+          style={{ borderBottom: '1px solid var(--color-border-default)' }}
         >
-          History <ArrowRight size={10} />
-        </Link>
-      </div>
+          <h3 className="font-heading text-sm font-bold text-foreground">Recent Sessions</h3>
+          <Link
+            to="/sessions"
+            className="flex items-center gap-1 text-[0.6875rem] text-muted-foreground hover:text-foreground transition-colors"
+          >
+            History <ArrowRight size={10} />
+          </Link>
+        </div>
+      )}
       <div>
         {sessions.map((session, i) => {
           const config = STATUS_CONFIG[session.status] || STATUS_CONFIG.abandoned
@@ -73,11 +75,14 @@ export function RecentFlowPilotSessions() {
                 <StatusIcon size={14} style={{ color: config.color }} className="shrink-0" />
               )}
               <div className="flex-1 min-w-0">
-                <p className="text-sm text-foreground truncate">
+                <p className="text-sm font-medium text-foreground truncate">
                   {session.session_type === 'chat'
                     ? (session.title || session.problem_summary || 'Chat')
                     : (session.problem_summary || 'Session')}
                 </p>
+                {session.problem_domain && (
+                  <p className="text-[0.625rem] text-muted-foreground mt-0.5 truncate">{session.problem_domain}</p>
+                )}
               </div>
               <span className="shrink-0 font-sans text-xs text-muted-foreground">
                 {timeAgo(session.resolved_at || session.created_at)}