Add AI Assignment toggle and Tags tab to settings

- Add "Use AI" button to assignments page to switch between algorithmic and GPT-powered suggestions
- Normalize AI suggestions format to match algorithmic format for consistent UI
- Add Tags tab to Settings page with link to expertise tags management
- AI assignment mode shows GPT-analyzed suggestions with confidence scores

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/settings/settings-content.tsx

@@ -18,7 +18,11 @@ import {
   Shield,
   Settings as SettingsIcon,
   Bell,
+  Tags,
+  ExternalLink,
 } from 'lucide-react'
+import Link from 'next/link'
+import { Button } from '@/components/ui/button'
 import { AISettingsForm } from './ai-settings-form'
 import { AIUsageCard } from './ai-usage-card'
 import { BrandingSettingsForm } from './branding-settings-form'
@@ -110,11 +114,15 @@ export function SettingsContent({ initialSettings }: SettingsContentProps) {
 
   return (
     <Tabs defaultValue="ai" className="space-y-6">
-      <TabsList className="grid w-full grid-cols-3 lg:grid-cols-7">
+      <TabsList className="grid w-full grid-cols-4 lg:grid-cols-8">
         <TabsTrigger value="ai" className="gap-2">
           <Bot className="h-4 w-4" />
           <span className="hidden sm:inline">AI</span>
         </TabsTrigger>
+        <TabsTrigger value="tags" className="gap-2">
+          <Tags className="h-4 w-4" />
+          <span className="hidden sm:inline">Tags</span>
+        </TabsTrigger>
         <TabsTrigger value="branding" className="gap-2">
           <Palette className="h-4 w-4" />
           <span className="hidden sm:inline">Branding</span>
@@ -156,6 +164,38 @@ export function SettingsContent({ initialSettings }: SettingsContentProps) {
         <AIUsageCard />
       </TabsContent>
 
+      <TabsContent value="tags">
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2">
+              <Tags className="h-5 w-5" />
+              Expertise Tags
+            </CardTitle>
+            <CardDescription>
+              Manage tags used for jury expertise, project categorization, and AI-powered matching
+            </CardDescription>
+          </CardHeader>
+          <CardContent className="space-y-4">
+            <p className="text-sm text-muted-foreground">
+              Expertise tags are used across the platform to:
+            </p>
+            <ul className="text-sm text-muted-foreground list-disc list-inside space-y-1">
+              <li>Categorize jury members by their areas of expertise</li>
+              <li>Tag projects for better organization and filtering</li>
+              <li>Power AI-based project tagging</li>
+              <li>Enable smart jury-project matching</li>
+            </ul>
+            <Button asChild>
+              <Link href="/admin/settings/tags">
+                <Tags className="mr-2 h-4 w-4" />
+                Manage Expertise Tags
+                <ExternalLink className="ml-2 h-3 w-3" />
+              </Link>
+            </Button>
+          </CardContent>
+        </Card>
+      </TabsContent>
+
       <TabsContent value="branding">
         <Card>
           <CardHeader>