[Pepps233]

Summary

Refresh the README for users and developers, and clarify pull request submission requirements.

Reasoning

Make installation, capabilities, benchmark results, and ways to participate easier to find while removing internal distribution and workspace details from the project overview.

Changes

• Add a live npm version badge, concise feature overview, quickstart, and documentation links.
• Include Harbor benchmark statistics and a Codex GPT-5.6 Luna comparison with trial counts and an execution-environment caveat.
• Add a Pi acknowledgment and invitations to star the project, report issues, propose features, and contribute.
• Require contributors to use and complete the provided GitHub pull request template.

Testing

• git diff --check passed before committing.
• Verified local documentation links and benchmark arithmetic against authenticated Harbor CLI results.
• Documentation-only changes; no code tests run.