[FEATURE] API Project Setup — FastAPI scaffold, config, and entry point

[gelluisaac]

Description

Create the initial FastAPI project structure for the AstroML web dashboard API.
This is the foundational task that all other API issues depend on.

Tasks

• Create api/ directory at project root with __init__.py, main.py, config.py
• Set up FastAPI app with CORS middleware (allow the Vite frontend origin)
• Add uvicorn[standard] to project dependencies (or a requirements-api.txt)
• Create configuration via Pydantic BaseSettings (database URL, API keys, model paths)
• Add a health-check endpoint: GET /health returning {"status": "ok"}
• Add a GET /api/v1 root endpoint with version info
• Wire up logging (structlog or standard logging)
• Add make run-api target to Makefile

Acceptance Criteria

• uvicorn api.main:app --reload starts the server on http://localhost:8000
• GET /health returns 200 with status ok
• CORS headers allow requests from http://localhost:5173 (Vite dev server)
• All configuration is loaded from environment variables / .env file

Dependencies

• Python 3.10+
• FastAPI, uvicorn, pydantic-settings

Labels

enhancement, api, good first issue