- Manifest.Tags from build.tags (^[a-z0-9_]+$, duplicates dropped), round-tripped by SaveManifest
- summer build passes -tags=<list> through goBuildArgs and prints the build tags line
- attach: s3blob imported only by s3_on.go (//go:build summercms_s3); an untagged binary
refuses an s3:// bucket_url naming the tag, build.tags and -tags
- go mod tidy adds the AWS SDK v2 modules as indirect requirements
- storage, modules, scaffolding, configuration and scaling docs plus the lagoon README