security: clean repository without media files and sensitive data

- Removed area/ directory with 816MB of media files
- Removed sensitive FTP credentials from Git history
- Implemented .env.upload system for secure deployments
- Added comprehensive .gitignore for future protection

This commit represents a clean slate with all sensitive data removed.

.gitignore

@@ -0,0 +1,40 @@
+# OS files
+.DS_Store
+Thumbs.db
+
+# Dependencies
+node_modules/
+vendor/
+
+# Environment files
+.env
+.env.local
+.env.production
+.env.upload
+
+# Build artifacts
+/backend/public/static/
+/frontend/build/
+/build_temp/
+
+# Log files
+*.log
+
+# Temporary files
+*.tmp
+*.temp
+
+# Media files
+area/
+
+# Cache files
+*.cache
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Deployment
+.env.upload