Add OpenAPI 3.0 specification, hosted documentation, and endpoint testing script for API#2

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copilot/fix-83289186-1064422809-d4945e29-1e0e-4353-8946-95401e9759d3

Commits on Nov 4, 2025

Add bash script to test all API endpoints and save responses

Copilot
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Packjackisback
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