F.3:15 - Migration notes

1. Usage clarifies. Merge only when the source-grounded distinction test fails.
2. Usage diverges. Split and add a counterexample when argument patterns or entailments pull apart.
3. Edition changes. Recover the changed basis and claim; do not automatically invent a new universal container.
4. Labels drift. Repair Tech or Plain without silently changing the claim.
5. Dormant claim. Omit it from the active comparison when it no longer changes the receiving answer; do not fold it into another claim without evidence.
6. Bridge temptation. Record the question for F.9; do not answer it in F.3.