fix: rename npx bin to mcp-mongo-server (v3.0.1)

[kiliczsh]

Summary

Renames the CLI bin from mongodb to mcp-mongo-server so npx resolves it directly. Patch release 3.0.1.

Why

The package name is mcp-mongo-server, but the bin was named mongodb. When the package name and bin name differ, npx -y mcp-mongo-server "<connection-string>" (the form documented in the README) fails to resolve the single bin and errors with:

sh: mongodb: command not found

The only working invocation was the explicit npx -y -p mcp-mongo-server mongodb "<connection-string>", which is awkward and undocumented.

Change

• package.json bin: mongodb → mcp-mongo-server.
• Version bump 3.0.0 → 3.0.1 (also updated in the server handshake in src/server.ts).

After this release, npx -y mcp-mongo-server "<connection-string>" — exactly what the README shows — works out of the box, no -p needed.

Notes

• The README already documents the npx -y mcp-mongo-server … form, so no docs change is required.
• Verified: the built server starts and connects over stdio (Connected to MongoDB database … Server connected successfully via stdio).