Migration notes

Existing FE files remain authoritative at their current paths. The profile introduces aliases rather than rewrites:

• existing experiment IDs map to FE experiment proposals or executions only through explicit future migration manifests;
• existing framework corpus folders may be indexed as legacy framework sources without converting their claims;
• existing evidence, hypothesis, and theory records retain their original lifecycle and governance;
• frozen experiment artifacts are never edited by migration.

Future migrations must record source path, source hash, target ID, adapter version, preserved fields, omitted fields, and unresolved incompatibilities.