Template + missions/rules sync

Goal

The create-plan template seeds a behavioral plan-wide acceptance criterion (not regression-only) and the missions.md gap test + routing/state rules cross-reference the lifecycle.

Implementation Sketch

Fix .claude/skills/create-plan/plan-schema.md Mission Success Criteria template so the plan-wide slot is a behavioral acceptance criterion distinct from ./test-all.sh green / all-section-criteria-met. Wire the missions.md mission-chain gap test to the functional plan-wide criterion. Cross-reference the lifecycle in routing.md / state-discipline.md where load-bearing. prose-lint clean.

Spec References

.claude/skills/create-plan/plan-schema.md:67-75; .claude/rules/missions.md mission-chain audit; .claude/rules/routing.md; .claude/rules/state-discipline.md.

Work Items

• Rewrite the plan-schema.md Mission Success Criteria template (behavioral plan-wide slot, distinct from regression gates).
• Wire the missions.md gap test to the functional plan-wide criterion + cross-reference in routing/state rules.
• Run prose-lint + plan_corpus check clean.