chore: Clean up unused files and fix gitignore

- Remove duplicate Gemini_Generated_Image file
- Remove oversized screenshot files (~1GB total)
- Fix gitignore TrueCV reference to RealCV
- Add screenshots/ to gitignore

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

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

.gitignore

@@ -220,5 +220,8 @@ local/
 *.swp
 
 # Local file uploads
-src/TrueCV.Web/uploads/
+src/RealCV.Web/uploads/
 logs/
+
+# Screenshots
+screenshots/