Adds test generation command that complements existing /test-check: - Auto-detects test framework (pytest, jest, vitest, go test, etc.) - Generates unit, integration, e2e, or snapshot tests - Creates happy path, edge case, and error tests - Supports multiple languages (Python, JavaScript, Go, etc.) - Integrates with /test-check for generate-then-verify workflow Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>