fix: clarify localhost connector instructions in serve output

[cstirry]

Problem

When running uv run opencontext serve, the output includes instructions to connect via Claude Connectors using the localhost URL:

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Connect via Claude Connectors
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1. Go to Settings -> Connectors (or Customize -> Connectors on claude.ai)
2. Click 'Add custom connector'
3. Enter a name (govex---dc-opendata) and URL: http://localhost:8000/mcp

Note: Localhost works with Claude Desktop only (web needs a deployed URL).

This is misleading on two counts:

1. The note says "Localhost works with Claude Desktop" — it does not. Claude Desktop also rejects plain http:// localhost URLs.
2. The instructions walk the user through adding a connector that will not work, with no clear path to fix it.

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How to reproduce the original issue

1. Run uv run opencontext serve
2. Follow the connector instructions using http://localhost:8000/mcp
3. Claude Desktop rejects the URL with a red error indicator
4. claude.ai also rejects it — a public https:// URL is required for both

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What's fixed

Restructured the output to:

• Lead with the curl/test commands which actually work locally
• Remove the misleading step-by-step connector instructions for localhost
• Add a clear note that a deployed https:// URL is required to connect to Claude, with a pointer to opencontext deploy

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What it looks like now

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Local MCP Server running!
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URL: http://localhost:8000/mcp

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Test with:
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  opencontext test --url http://localhost:8000/mcp
  or curl -X POST http://localhost:8000/mcp -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"ping"}'

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Connect via Claude Connectors
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To connect to Claude, a public https:// URL is required.
Run 'opencontext deploy --env staging' to get a deployed URL,
then add it as a custom connector in Claude settings.

Press Ctrl+C to stop
==================================================

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Files changed

• cli/commands/serve.py