A private repository failed derivation the same way a broken one did, so
"cannot read" and "does not exist" were indistinguishable from outside.
They authorise opposite things: only the second can justify retiring a
record.
- ForgeUnreadableError (a ForgeDeriveError, so old callers still catch it)
for permission-shaped clone failures, including Forgejo's 404 for an
unauthenticated private repo — indistinguishable here, and the safe
reading of an ambiguous answer cannot destroy a record.
- GIT_TERMINAL_PROMPT=0: an unattended pass must fail, not block on a
username prompt. Failing is what makes the case observable.
- DerivedProjection.retirement_eligible separates "no records found" from
"no records exist". A checkout with no workplans/ directory cannot
evidence an absence — the empty-clone path that would have proposed
every record in a repository for retirement.
- Retirement from an ineligible source is refused even when acknowledged.
- Fleet keeps unreadable out of the error bucket.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 3377672@bnt-lap001
Assistant-Session: 15463ccf-238f-4e13-b163-93aa25c6d166
tegwick
85181cd3e4