Design proposal for review (no code change): why the checkout-path
workspace assumption blocks parallel issues and caused the #18 checkout
switch, three candidate models, the recommended hybrid (writers isolated
per worktree, readers shared, one .mam control plane via env overrides),
how it maps onto today's scripts, what has to change, and the questions
put to the reviewers.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff
