[WIP] change port to 9000

[Copilot]

Plan: Change Server Port from 3001 to 9000

Verified current state:

• Repository explored and understood
• Dependencies installed successfully
• Server currently runs on port 3001 and responds correctly to requests
• No existing test infrastructure present

Changes needed:

• Update port constant from 3001 to 9000 in index.js
• Test that server starts correctly on new port 9000
• Verify server functionality on new port with HTTP requests
• Manual verification of all endpoints working correctly

Scope: This is a minimal change affecting only one line in index.js (line 4: const port = 3001; → const port = 9000;)

Original prompt

change port to 9000

Created from VS Code via the [GitHub Pull Request](https://marketplace.visualstudio.com/items?itemName=GitHub.vscode-pull-request-github) extension.

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