Summary

go tool task fmt now delegates to golangci-lint with gofmt/goimports, but .golangci.yml hard-codes the goimports local-prefixes. Running the formatter from a fork or nested module can cause the prefixes to drift.

Desired outcome

• Derive the goimports local-prefixes from github.com/satococoa/wtp/v2 (or the current module path) during the task run so forks/renames stay correct.
• Document the formatter behaviour so contributors know go tool task fmt is the canonical entry point.
• Optionally consider adding additional formatters (e.g., gofumpt or gci) if they provide value.

Notes

• Keep formatter output deterministic.
• Any new formatter should be applied in both CI and contributor docs.