review-diff

Review the diff between the current branch and main as a senior developer. Analyzes architecture, coding standards, security, performance, and correctness. Use when user says 'review my code', 'pre-PR review', 'review diff', 'code review before PR', 'check my changes', 'senior review', or 'review branch'. Provides actionable feedback organized by severity. Do NOT use for only running tests (use /test-scope), only…