Wire the --reviews flag through the full stack so plan-phase can
replan incorporating cross-AI review feedback from REVIEWS.md:
- core.cjs: add has_reviews detection in searchPhaseInDir
- init.cjs: wire has_reviews and reviews_path through all init functions
- plan-phase.md command: add --reviews to argument-hint and flags
- plan-phase.md workflow: add step 2.5 validation, skip research,
skip existing plans prompt, pass reviews_path to planner
- gsd-planner.md: add reviews_mode section for consuming review feedback
- COMMANDS.md: add --reviews and missing flags to docs
Closes the gap where --reviews was referenced in 6 places (review
workflow, review command, help workflow, COMMANDS.md, FEATURES.md)
but never implemented.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>