Submit the server to the official MCP Registry

[ayhammouda]

Why

The official registry is becoming the canonical metadata layer for public MCP servers. Being listed there improves discoverability and trust.

Blocked by

• PyPI package published successfully.
• server.json metadata added and validated.

Acceptance criteria

• Authenticate with the official MCP publisher flow.
• Publish the server metadata successfully.
• Add registry link/badge/reference to the README if available.
• Capture any follow-up fixes required by registry validation.