"""Template. Set these in your environment before running the builder.

Locally (PowerShell, current session):
    $env:PEXELS_API_KEY    = "your-pexels-key"
    $env:GEMINI_API_KEY    = "your-aistudio-key"   # works for Gemini AND Gemma
    $env:NEON_DATABASE_URL = "postgresql://user:pass@host/dbname?sslmode=require"

On a Hugging Face Space: add the same three as Space "Secrets".

Get keys / DSN:
    Pexels:  https://www.pexels.com/api/
    Gemini:  https://aistudio.google.com/apikey
    Neon:    https://neon.tech  (project -> Connection string)

Optional overrides (defaults shown):
    $env:GEMINI_MODEL = "gemini-3.1-flash-lite"
    $env:GEMMA_MODEL  = "gemma-4-31b-it"
"""