`docker compose up` now works with no .env editing. A new entrypoint
(docker-entrypoint.sh) generates any missing secret (BETTER_AUTH_SECRET,
AI_CREDENTIALS_KEY) on first start and persists it to the temetro_secrets
volume, so values stay stable across restarts (rotating them would log users
out / invalidate stored AI keys). Real values passed via .env/compose still win.
This also fixes the boot failure where the compose backend ran with
NODE_ENV=production but never passed AI_CREDENTIALS_KEY through, tripping the
production guard. The secret is now an optional pass-through and BETTER_AUTH_SECRET
no longer hard-fails when unset.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Khalid Abdi