Fix Claude customization migration targets - #334942

PR classified as team-member.

✅ Head commit 5e2aa57 is signed by aeschli with trusted key 704514F880A596860D2200B8E513BD990A2907F7 — approval requirement reduced from 2 to 1.

✅ Collaborator approvals: 2/1 (TylerLeonhardt, pwang347).

✅ No newly added runnable binary files.

✅ No protected engineering system files changed.