Admin dashboard & round management UX overhaul

- Extract round detail monolith (2900→600 lines) into 13 standalone components
- Add shared round/status config (round-config.ts) replacing 4 local copies
- Delete 12 legacy competition-scoped pages, merge project pool into projects page
- Add round-type-specific dashboard stat panels (submission, mentoring, live final, deliberation, summary)
- Add contextual header quick actions based on active round type
- Improve pipeline visualization: progress bars, checkmarks, chevron connectors, overflow fix
- Add config tab completion dots (green/amber/red) and inline validation warnings
- Enhance juries page with round assignments, member avatars, and cap mode badges
- Add context-aware project list (recent submissions vs active evaluations)
- Move competition settings into Manage Editions page

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

src/components/admin/rounds/config/config-section-header.tsx

@@ -0,0 +1,51 @@
+'use client'
+
+import { cn } from '@/lib/utils'
+
+type CompletionStatus = 'complete' | 'warning' | 'error'
+
+type ConfigSectionHeaderProps = {
+  title: string
+  description?: string
+  status: CompletionStatus
+  summary?: string
+}
+
+const statusDot: Record<CompletionStatus, string> = {
+  complete: 'bg-emerald-500',
+  warning: 'bg-amber-500',
+  error: 'bg-red-500',
+}
+
+export function ConfigSectionHeader({
+  title,
+  description,
+  status,
+  summary,
+}: ConfigSectionHeaderProps) {
+  return (
+    <div className="flex items-start gap-3">
+      <div className="flex items-center gap-2 flex-1 min-w-0">
+        <span
+          className={cn(
+            'mt-1 h-2.5 w-2.5 rounded-full shrink-0',
+            statusDot[status],
+          )}
+        />
+        <div className="flex-1 min-w-0">
+          <div className="flex items-center gap-2">
+            <h3 className="text-base font-semibold">{title}</h3>
+            {summary && (
+              <span className="text-xs text-muted-foreground truncate">
+                — {summary}
+              </span>
+            )}
+          </div>
+          {description && (
+            <p className="text-sm text-muted-foreground mt-0.5">{description}</p>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}