feat(portfolio): add subtitle, badges, and metrics to projects

Added new optional fields to the PortfolioData projects interface: subtitle for additional project description, badges array for highlighting key features, and metrics object for complexity and team size. This enhances the portfolio data structure to support richer project representations.

lib/usePortfolioData.ts

@@ -26,6 +26,7 @@ interface PortfolioData {
   projects: Array<{
     id: string;
     title: string;
+    subtitle: string;
     description: string;
     longDescription: string;
     technologies: string[];
@@ -34,8 +35,13 @@ interface PortfolioData {
     demoUrl: string;
     githubUrl: string;
     imageUrl: string;
+    badges: string[];
     featured: boolean;
     category: string;
+    metrics?: {
+      complexity: number;
+      teamSize?: string;
+    };
   }>;
   skills: {
     technical: Array<{