Add blog posts, cleanup unused files, update components

- Add 100 blog posts covering AI, development, and tech topics
- Add .env.example for environment configuration
- Add accessibility and lighthouse audit scripts
- Remove obsolete SEO reports and temporary files
- Remove dev-dist build artifacts and backup files
- Remove unused portrait images (moved/consolidated elsewhere)
- Update contact form and component improvements

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

.env.example

@@ -0,0 +1,12 @@
+# Supabase Configuration
+NEXT_PUBLIC_SUPABASE_URL=https://your-project.supabase.co
+NEXT_PUBLIC_SUPABASE_ANON_KEY=your-anon-key
+
+# Google Analytics (optional)
+NEXT_PUBLIC_GA_TRACKING_ID=G-XXXXXXXXXX
+
+# Site URL
+NEXT_PUBLIC_SITE_URL=https://damjan-savic.com
+
+# OpenAI API Key (for image generation)
+OPENAI_API_KEY=sk-your-api-key-here