Update PLANNING.md §2 from empty checkboxes to the working answers in
decision-log, fix the reverse OS/self-app wording, and clarify roadmap
Phase 3 so OS-layer growth does not rewrite the start order.
Co-authored-by: okuma <o0kuma@users.noreply.github.com>
Introduce a single source of truth for agent guidance during the
planning-docs phase: document authority, tentative Q1-Q7 handling,
v1 scope guards, safety invariants, and next PoC priorities.
Co-authored-by: okuma <o0kuma@users.noreply.github.com>