v0.1.0

The first release.

• Five BigQuery remote functions, noul, choice, score, decide and decide_image, answered by a Cloud Run
  function that calls Drex through nace-sdk 0.6.2, or OpenRouter.
• A Terraform module that deploys the function, the BigQuery connection, the dataset and its routines, reading the API
  key from Secret Manager so it never enters Terraform state.
• Images from Cloud Storage object tables for decide_image, through signed URLs.
• Query-failing checks for questions, labels, models and image URLs; NULL with a logged warning for rows Drex can't
  answer; retries with a per-request budget; a batch deadline under the function's timeout.