Code Quality and Documentation Skill

REFERENCE MODE: This skill provides reference material. Load specific standards on-demand based on current task.

Language-agnostic code quality and documentation principles applicable across all technology stacks. Covers design principles, complexity management, refactoring triggers, error handling, and API documentation.

Workflow

Step 1: Load Code Organization Standards

Important: Load this standard for any implementation or refactoring work.

Read: standards/code-organization.md

Covers SRP, CQS, parameter objects, package structure, immutability, refactoring triggers, complexity thresholds, and maintenance prioritization.

Step 2: Load Additional Standards (As Needed)

Error Handling (load for error/exception work):

Read: standards/error-handling.md

Use when: Designing error handling, exception hierarchies, or recovery patterns, or when writing a classifier, gate, or status derivation that must fail closed rather than emit an unsubstantiated clean verdict.

Documentation Principles (load for API documentation work):

Read: standards/documentation-principles.md

Use when: Writing or reviewing public API documentation, updating docs during code changes.

Related

• pm-dev-java:java-core — Java-specific patterns and features
• pm-dev-java:java-maintenance — Java maintenance prioritization
• pm-dev-java:javadoc — JavaDoc tag syntax and Java-specific patterns
• pm-dev-frontend:javascript — JavaScript-specific patterns including JSDoc

Code Examples

Single Responsibility — Before

class UserService:
    def create_user(self, data):
        # validates, saves to DB, sends email, logs audit
        ...

Single Responsibility — After

class UserService:
    def __init__(self, repo, notifier):
        self._repo = repo
        self._notifier = notifier

    def create_user(self, data):
        user = self._repo.save(data)
        self._notifier.welcome(user)
        return user

Standards Reference