## Changes
1. **Support ESC environment variable names**
- Fallback to R2_ADMIN_ACCESS_KEY_ID if R2_ACCESS_KEY not set
- Fallback to R2_ADMIN_SECRET_ACCESS_KEY if R2_SECRET_KEY not set
- Allows script to work with Pulumi ESC (beanflows/prod) variables
2. **Use landing bucket path**
- Changed R2 path from `psd/{etag}.zip` to `landing/psd/{etag}.zip`
- All extracted data goes to landing bucket for consistent organization
3. **Updated Pulumi ESC environment**
- Added R2_BUCKET=beanflows-data-prod
- Fixed R2_ENDPOINT to remove bucket path (now just account URL)
## Testing
- ✅ R2 upload works: Uploaded to landing/psd/316039e2612edc1_0.zip
- ✅ R2 deduplication works: Skips upload if file exists
- ✅ Local mode still works without credentials
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
## Key Changes
1. **Simplified extraction logic**
- Changed from downloading 220+ historical archives to checking only latest available month
- Tries current month and falls back up to 3 months (handles USDA publication lag)
- Architecture advisor insight: ETags naturally deduplicate, historical year/month structure was unnecessary
2. **Flat storage structure**
- Old: `data/{year}/{month}/{etag}.zip`
- New: `data/{etag}.zip` (local) or `psd/{etag}.zip` (R2)
- Migrated 226 existing files to flat structure
3. **Dual storage modes**
- **Local mode**: Downloads to local directory (development)
- **R2 mode**: Uploads to Cloudflare R2 (production)
- Mode determined by presence of R2 environment variables
- Added boto3 dependency for S3-compatible R2 API
4. **Updated raw SQLMesh model**
- Changed pattern from `**/*.zip` to `*.zip` to match flat structure
## Benefits
- Simpler: Single file check instead of 220+ URL attempts
- Efficient: ETag-based deduplication works naturally
- Flexible: Supports both local dev and production R2 storage
- Maintainable: Removed unnecessary complexity
## Testing
- ✅ Local extraction works and respects ETags
- ✅ Falls back correctly when current month unavailable
- ✅ Linting passes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
