Changes in code after first review from Google AI Studio

.gitignore

@@ -1,16 +1,4 @@
-# Sensitive exports
-code_export.txt
-code_export.ps1.test.txt
-*.test.txt
-
-# OS files
-.DS_Store
 Thumbs.db
-
+.DS_Store
-# IDE
+gitea-token*.txt
-.vscode/
+gitea-token*.txt.sig
-.idea/
-
-# Temporary files
-*.tmp
-*.log

SECURITY_CLEANUP.md

@@ -1,29 +0,0 @@
-# Security Cleanup - April 9, 2026
-
-## What happened
-Sensitive data (code exports containing potential tokens) was accidentally committed to git history in commit 2807a55.
-
-## Actions taken
-1. ✅ Removed sensitive files from tracking (code_export.txt, code_export.ps1.test.txt)
-2. ✅ Added proper .gitignore to prevent future leaks
-3. ✅ Used git-filter-repo to completely remove files from entire git history
-4. ✅ Prepared for force-push to rewrite remote history
-
-## Next steps (MANUAL)
-1. **CRITICAL**: Revoke the exposed Gitea token immediately in Gitea settings
-2. Generate a new Gitea token
-3. Update any services using the old token
-4. Execute: `git push --force origin master` to rewrite remote history
-5. Notify any collaborators to re-clone the repository
-
-## Prevention
-- .gitignore now blocks code_export.txt and similar files
-- export_code.ps1 already has exclusions for sensitive patterns
-- Always review git status before committing
-
-## Verification
-After force-push, verify that sensitive files are not in history:
-```bash
-git log --all --full-history -- code_export.txt
-# Should return nothing
-```