Go

Use this skill for changes touching *.go. Read the matching developer documentation named by AGENTS.md before editing.

Rules

• Follow idiomatic Go as described by Effective Go, the Go documentation, and established repository patterns.
• Source of truth for style and APIs: .golangci.yml, go.mod, and existing code patterns.
• Treat go.mod as the version ceiling for Go features and stdlib APIs.
• Prefer modern Go idioms available in the target version over legacy patterns.
• Return early to keep control flow flat. Prefer straightforward code and standard-library primitives over clever abstractions.
• Always run gofmt on changed Go files.
• Respect active lints.
• Never add file-wide or package-wide nolint directives. If suppression is unavoidable, keep it narrowly scoped to the exact line/rule and add a short justification.
• Prefer Makefile targets for standard checks when applicable.
• Do not add helper functions or methods unless they abstract at least two meaningful operations or remove real complexity.
• Never ignore errors, including assignment to _. Either return an error (wrapping when useful) or handle it locally; do not report an error and then continue as though it were handled.
• Add doc comments for new exported Go functions and types.

Runtime

• For internal/runtime/funcs/**, follow docs/developer/runtime-functions.md.