Update .gitignore to exclude screenshots and generated presentations

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: ofriw

.gitignore

@@ -31,3 +31,11 @@ node_modules/
 # AI Tools
 .chunkhound/
 .chunkhound.json
+
+# Generated content
+scripts/output/
+
+# Screenshots
+*.png
+*.jpg
+*.jpeg