CCA-F: Claude Certified Architect — Foundations

Custom slash commands in Claude Code are reusable prompt templates stored as markdown files (e.g., under .claude/commands/) that are invoked on demand by typing a command like /review. This lets the team encode the full 8-item checklist once and pull it into context only when a review session is explicitly started, replacing the manual copy-paste step. In contrast, content placed in CLAUDE.md is loaded automatically into every session's context regardless of task type, so putting a review-specific checklist there would unnecessarily inject it into unrelated work such as feature development, debugging, or documentation generation. A dedicated subagent or a default plan-mode setting doesn't match the simple need of triggering a specific static checklist only for review sessions, making the slash command the most targeted and efficient solution.