## Summary
When `AWS_ENDPOINT_URL_S3` or `AWS_ENDPOINT_URL` is set — typically because the runtime is pointing at a local MinIO / S3-compatible endpoint — auto-enable path-style addressing on the S3 client. Without this, requests fail because MinIO does not implement virtual-hosted style addressing out of the box.
Production deployments leave those env vars unset and continue talking to real AWS S3 with virtual-hosted style — no behaviour change for prod.
Both `New()` and `NewS3()` share a `s3ClientOptions` helper that applies the toggle.
## Motivation
Spinning up a MinIO-backed acctest environment for Shiny (document-service, invoice-service, accounting-service). Without this change callers would have to sidestep `storage.New` and construct an `aws.Config` by hand just to flip `UsePathStyle`.
## Test plan
- [x] New unit test `TestS3ClientOptions_PathStyleTogglesOnCustomEndpoint` covers the three relevant env-var states
- [x] `go test ./...` passes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #99
Replace feature/s3/manager (deprecated) with feature/s3/transfermanager.
Updates Uploader interface, constructor, and all tests to use the new
UploadObject API with transfermanager types.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Create shared storage module for AWS S3 operations with comprehensive
development infrastructure:
Core Features:
- S3 interface with two upload patterns (manager and direct)
- Presigned URL generation with 15-minute expiration
- Support for multipart uploads and direct PutObject
- Comprehensive test coverage (8 tests, 70.4% coverage)
- Generic implementation without project-specific dependencies
Development Tooling:
- .editorconfig for consistent editor settings
- .pre-commit-config.yaml with Go linters and formatters
- .golangci.yml for golangci-lint configuration
- commitlint.config.js for conventional commit validation
- cliff.toml for automated changelog generation (v0.0.1)
- renovate.json for automated dependency updates
- .gitlab-ci.yml for CI/CD pipeline
CI/CD Pipeline:
- Automated testing with race detection
- Coverage tracking and Codecov integration
- Vulnerability scanning with govulncheck
- Pre-commit validation gates
- Release automation
Module exports:
- New(bucket) - Upload manager pattern for large files
- NewS3(cfg, bucket) - Direct upload pattern
- Store(path, content, contentType) - Upload and get presigned URL
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
argoyle
