<objective Review source files changed during a phase for bugs, security vulnerabilities, and code quality problems. Spawns the gsd-code-reviewer agent to analyze code at the specified depth level. Produces REVIEW.md artifact in the phase directory with severity-classified findings. Arguments: - Phase number (required) — which phase's changes to review (e.g., "2" or "02") - (optional) — review depth level, overrides workflow.code review depth config - quick: Pattern-matching only ( 2 min) - standard: Per-file analysis with language-specific checks ( 5-15 min, default) - deep: Cross-file analy…