Remove FXP files from tracking and update gitignore

- Remove nfjson/nfjsonread.FXP from git tracking
- Add Python cache patterns (__pycache__/, *.py[cod], *$py.class)
- Add environment file patterns (.env, .env.local, .env.*.local)
- Reorganize project structure with VFP files moved to vfp/ directory
- Add comprehensive database scripts and documentation

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

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

.gitignore

@@ -8,3 +8,13 @@
 *.err
 *.ERR
 *.log
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Environment files
+.env
+.env.local
+.env.*.local