Refine repository structure

- Update .gitignore for dev/ and tmp/ directories
- Move certificate setup to dev/ directory with README
- Remove production references from AGENTS.md
- Clean up directory structure and documentation
- Repository now ready for development workflow

AGENTS.md

@@ -23,22 +23,9 @@ We have UnitTests which should be kept up to date before committing any new code
 
 Fix every compiler warning before committing.
 
-### Certificate Management
+### Development Notes
 
 Development
-- Generate self-signed certificates for local testing
-- Store in `certs/` directory (gitignored)
+- Generate self-signed certificates for local testing in `dev/` directory
 - Use CN=localhost for development
 
-Production
-- Use Let's Encrypt or CA-signed certificates
-- Store certificates outside repository
-- Set appropriate file permissions (600 for keys, 644 for certs)
-- Implement certificate renewal monitoring
-- Never include private keys in documentation or commits
-
-Deployment Security
-- Certificate files should be owned by service user
-- Use systemd service file with proper User/Group directives
-- Consider using systemd's `LoadCredential` for certificate paths
-