feat: progressive init and readiness API for cloud storage
- Add `initMode` option to all cloud storage adapters (GCS, S3, Azure)
- 'auto' (default): progressive in cloud, strict locally
- 'progressive': <200ms cold starts, lazy bucket validation
- 'strict': blocking validation (current behavior)
- Add cloud environment auto-detection for:
- Cloud Run (K_SERVICE, K_REVISION)
- AWS Lambda (AWS_LAMBDA_FUNCTION_NAME)
- Cloud Functions (FUNCTIONS_TARGET)
- Azure Functions (AZURE_FUNCTIONS_ENVIRONMENT)
- Add readiness API to Brainy class:
- `brain.ready`: Promise that resolves when init() completes
- `brain.isFullyInitialized()`: checks if background tasks done
- `brain.awaitBackgroundInit()`: waits for background tasks
- Lazy bucket validation on first write (not during init)
- Background count synchronization
- Update AWS/GCP deployment docs with readiness patterns
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
David Snelling
d938a6bd4f