---

name: coding-standards description: >- Python code style, formatting, linting, and type hints for GMailArchiver. Use when writing Python code, fixing ruff or mypy errors, adding type hints, formatting imports, or reviewing code quality. Triggers on: style, format, lint, ruff, mypy, type hint, import order, line length, docstring.

Coding Standards for GMailArchiver

This skill provides guidance on coding standards and style conventions.

Source Documentation

Always read the authoritative source:

docs/CODING.md - The definitive coding standards document containing:

• Code style and formatting rules
• Naming conventions
• Import organization
• Type hint requirements
• Docstring standards
• Error handling patterns
• Logging conventions

Quick Reference

Key tools used:

• ruff - Linting and formatting (line length: 100)
• mypy - Type checking (strict mode)
• Python 3.14+ - Target version

Quality Commands

# Check linting
uv run ruff check .

# Auto-fix linting issues
uv run ruff check . --fix

# Check formatting
uv run ruff format --check .

# Apply formatting
uv run ruff format .

# Type checking
uv run mypy src/gmailarchiver

Usage

When writing code:

1. Read docs/CODING.md for current coding standards
2. Run quality checks before committing
3. If standards change, update docs/CODING.md (not this skill)

The source documentation is the single source of truth - this skill just points you there.