feat(backup): add MinIO snapshot backups via CLI and scheduler

README.md

@@ -65,6 +65,7 @@ Flynn provides a full CLI via the `flynn` binary (or `npx tsx src/cli/index.ts`
 | `flynn sessions` | List active sessions |
 | `flynn doctor` | Validate config and check system health |
 | `flynn config` | Show resolved configuration (secrets redacted) |
+| `flynn backup` | Create a snapshot backup and optionally upload to MinIO |
 | `flynn completion <shell>` | Generate shell completions (bash, zsh, fish) |
 | `flynn setup` | Interactive setup wizard |
 | `flynn gmail-auth` | Authenticate with Gmail via OAuth2 |
@@ -89,6 +90,9 @@ flynn config
 # List sessions
 flynn sessions
 
+# Create backup now (uses config backup + MinIO settings)
+flynn backup
+
 # Generate shell completions
 flynn completion bash              # Print bash completions to stdout
 flynn completion zsh --install     # Install zsh completions to ~/.zshrc