Refactor frontend components to use new icon imports and improve default values

- Updated `EnhancedMetricCard` to set a default accent color to blue.
- Replaced `lucide-react` icons with custom icons in `LinkResults`, `OptimizationScores`, and various pages in the Automation and Optimizer sections.
- Enhanced button layouts in `AutomationRules`, `Tasks`, and `ContentSelector` for better alignment and user experience.
- Improved loading indicators across components for a more consistent UI experience.

frontend/src/pages/Optimizer/Dashboard.tsx

@@ -4,7 +4,7 @@ import PageMeta from '../../components/common/PageMeta';
 import ComponentCard from '../../components/common/ComponentCard';
 import EnhancedMetricCard from '../../components/dashboard/EnhancedMetricCard';
 import PageHeader from '../../components/common/PageHeader';
-import { Zap, FileText, TrendingUp, ArrowRight } from 'lucide-react';
+import { BoltIcon, FileTextIcon, ArrowUpIcon, ArrowRightIcon } from '../../icons';
 import { fetchContent } from '../../services/api';
 import { useSiteStore } from '../../store/siteStore';
 import { useSectorStore } from '../../store/sectorStore';
@@ -69,19 +69,26 @@ export default function OptimizerDashboard() {
       <PageMeta title="Optimizer Dashboard" description="Content optimization overview and statistics" />
       
       <div className="space-y-6">
-        <PageHeader
-          title="Optimizer Dashboard"
-          description="Optimize your content for SEO, readability, and engagement"
-          actions={
-            <Link
-              to="/optimizer/content"
-              className="inline-flex items-center gap-2 px-4 py-2 bg-blue-500 text-white rounded-lg hover:bg-blue-600 transition-colors"
-            >
-              <Zap className="w-4 h-4" />
-              Optimize Content
-            </Link>
-          }
-        />
+        <div className="flex items-center justify-between mb-6">
+          <PageHeader
+            title="Optimizer Dashboard"
+            lastUpdated={new Date()}
+            badge={{
+              icon: <BoltIcon />,
+              color: 'orange',
+            }}
+          />
+          <Link
+            to="/optimizer/content"
+            className="inline-flex items-center gap-2 px-4 py-2 bg-blue-500 text-white rounded-lg hover:bg-blue-600 transition-colors"
+          >
+            <BoltIcon />
+            Optimize Content
+          </Link>
+        </div>
+        <p className="text-gray-600 dark:text-gray-400 mb-6">
+          Optimize your content for SEO, readability, and engagement
+        </p>
 
         {loading ? (
           <div className="text-center py-12">
@@ -96,8 +103,8 @@ export default function OptimizerDashboard() {
                 title="Total Optimized"
                 value={stats.totalOptimized.toString()}
                 subtitle={`${stats.contentWithoutScores} not optimized`}
-                icon={<FileText className="w-6 h-6" />}
-                trend={null}
+                icon={<FileTextIcon className="w-6 h-6" />}
+                accentColor="blue"
                 onClick={() => navigate('/optimizer/content')}
               />
 
@@ -105,8 +112,8 @@ export default function OptimizerDashboard() {
                 title="Avg Score Improvement"
                 value={`+${stats.averageScoreImprovement}%`}
                 subtitle="Average improvement per optimization"
-                icon={<TrendingUp className="w-6 h-6" />}
-                trend={null}
+                icon={<ArrowUpIcon className="w-6 h-6" />}
+                accentColor="green"
                 onClick={() => navigate('/optimizer/content')}
               />
 
@@ -114,8 +121,8 @@ export default function OptimizerDashboard() {
                 title="Credits Used"
                 value={stats.totalCreditsUsed.toString()}
                 subtitle="Total credits for optimization"
-                icon={<Zap className="w-6 h-6" />}
-                trend={null}
+                icon={<BoltIcon className="w-6 h-6" />}
+                accentColor="orange"
                 onClick={() => navigate('/optimizer/content')}
               />
             </div>
@@ -128,13 +135,13 @@ export default function OptimizerDashboard() {
                   className="flex items-center justify-between p-4 border border-gray-200 dark:border-gray-700 rounded-lg hover:bg-gray-50 dark:hover:bg-gray-800 transition-colors"
                 >
                   <div className="flex items-center gap-3">
-                    <Zap className="w-5 h-5 text-yellow-500" />
+                    <BoltIcon className="w-5 h-5 text-yellow-500" />
                     <div>
                       <h3 className="font-medium text-gray-900 dark:text-white">Optimize Content</h3>
                       <p className="text-sm text-gray-500 dark:text-gray-400">Select and optimize content items</p>
                     </div>
                   </div>
-                  <ArrowRight className="w-5 h-5 text-gray-400" />
+                  <ArrowRightIcon className="w-5 h-5 text-gray-400" />
                 </Link>
 
                 <Link
@@ -142,13 +149,13 @@ export default function OptimizerDashboard() {
                   className="flex items-center justify-between p-4 border border-gray-200 dark:border-gray-700 rounded-lg hover:bg-gray-50 dark:hover:bg-gray-800 transition-colors"
                 >
                   <div className="flex items-center gap-3">
-                    <FileText className="w-5 h-5 text-purple-500" />
+                    <FileTextIcon className="w-5 h-5 text-purple-500" />
                     <div>
                       <h3 className="font-medium text-gray-900 dark:text-white">View Content</h3>
                       <p className="text-sm text-gray-500 dark:text-gray-400">Browse all content items</p>
                     </div>
                   </div>
-                  <ArrowRight className="w-5 h-5 text-gray-400" />
+                  <ArrowRightIcon className="w-5 h-5 text-gray-400" />
                 </Link>
               </div>
             </ComponentCard>