shared-patterns

# Shared Patterns Reusable patterns and templates for skill and hook development. ## When NOT To Use - Authoring a skill end to end (use `abstract:skill-authoring`) - Cross-plugin contracts, which belong in leyline rather than here ## Purpose This skill provides shared patterns that are referenced by other skills in the abstract plugin. It follows DRY principles by centralizing common patterns. ## Pattern Categories ### Validation Patterns See [modules/validation-patterns.md](modules/validation-patterns.md) for: - Input validation templates - Schema validation patterns - Error reporting formats ### Error Handling See [modules/error-handling.md](modules/error-handling.md) for: - Exception hierarchies - Error message formatting - Recovery strategies ### Testing Templates See [modules/testing-templates.md](modules/testing-templates.md) for: - Unit test scaffolding - Integration test patterns - Mock fixtures ### Workflow Patterns See [modules/workflow-patterns.md](modules/workflow-patterns.md) for: - Checklist templates - Feedback loop patterns - Progressive disclosure structures ## Usage Reference these patterns from other skills: ```markdown For validation patterns, see the `shared-patterns` skill's [validation-patterns](../shared-patterns/modules/validation-patterns.md) module. ``` **Verification:** Run the command with `--help` flag to verify availability. ## Exit Criteria - [ ] Each of the four module files (`validation-patterns.md`, `error-handling.md`, ...