fix: use /sse for cursor

[joshsny]

Cursor isn't vibing well with the Streamable HTTP endpoint, so this moves it over to the /sse endpoint

[jonathanlab]

Will also update our docs accordingly. Is it only Cursor that doesn't play nice with the Streamable HTTP ecosystem?

[Copilot]

Pull Request Overview

This PR fixes compatibility issues between Cursor and the Streamable HTTP endpoint by switching Cursor to use the SSE (Server-Sent Events) endpoint instead.

• Adds a configurable server type parameter to support both SSE and Streamable HTTP endpoints
• Updates Cursor client to specifically use the SSE endpoint
• Maintains backward compatibility for other clients that continue using Streamable HTTP

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/steps/add-mcp-server-to-clients/defaults.ts	Adds MCPServerType and updates getDefaultServerConfig to accept endpoint type parameter
src/steps/add-mcp-server-to-clients/clients/cursor.ts	Overrides addServer method to use SSE endpoint specifically for Cursor
src/steps/add-mcp-server-to-clients/MCPClient.ts	Refactors addServer to use new _addServerType method with configurable endpoint type
src/steps/add-mcp-server-to-clients/clients/tests/claude.test.ts	Updates test to verify Claude continues using streamable-http endpoint

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[joshsny]

Will also update our docs accordingly. Is it only Cursor that doesn't play nice with the Streamable HTTP ecosystem?

Going to test out the others and then can do a batch update to docs 👍