Note

Adds a CLI help command with comprehensive usage/config docs, improves flag handling (version/help/unknown), updates README header with banner/badges, and expands .gitignore.

• CLI/Server (cmd/mysql-mcp-server/main.go):
  • Add --help/-h command and printHelp() with usage, env config, multi-DSN, examples, and features.
  • Centralize flag handling before config load; support --version/-v and error on unknown flags.
• Docs:
  • Update README.md header with banner image and badges (version, Go, license).
• Tooling:
  • Expand .gitignore to exclude personal shell configs and review documents.

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