Test code only — no template changed and no image: line moved.
The update night walked real within-a-major upstream edges on scratch guest 9202 through the
product's own guarded Update, against a PRIVATE DRILL CATALOG; the live catalog was never
touched. This brings the expensive half of that work — the seed routes — back into the harness
so the same edges can be run here WITH their ABORT step, which the box deliberately does not
offer (09 6.1: whether the old image starts on migrated data is per-app and unpredictable).
- upgrade_fixtures.py: ActualBudget, Navidrome, AudiobookShelf, Vikunja. Each seeds through the
app's OWN interface (R-156); each carries a negative control run on every verify(), so a
readback that has broken into always succeeding fails instead of passing everything.
- upgrade-test.py: edges U1..U7, all real upstream moves existing 2026-09-21 that this catalog
has NOT made, each holding its database engine constant.
- Limitations kept: Navidrome and AudiobookShelf seed the DATABASE half only, and say so.
OWED, stated so it is not mistaken for done: the U1..U7 harness RUNS, and with them the per-app
ABORT answers. The code is in; the runs are not.
Gates: catalog_gates.py --fast — image-pins, engine-major, catalog-since, copy-i18n all OK.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
R-449. Until today one upgrade out of 53 had ever been measured - Nextcloud, by
hand, in a spike - and the whole update arc was designed against that single data
point.
Per edge: deploy at FROM, seed through the app's OWN interface, prove the seed
reads back, swap to TO, ask the app for the data again, then put the FROM images
back and record what happens - verbatim, and never called a rollback.
Success is an application-level readback, not file identity: survive2.py's
sha256+inode rule is right for a redeploy and wrong for an upgrade, because a
migration is supposed to rewrite files. And nothing is ever seeded by hand (R-156)
- an app with no non-browser route is recorded inconclusive, never faked.
C3 is a negative control whose TO image exits immediately, and it must be run
first: it came back failed, which is what makes the greens mean anything.
The bookstack fixture uses artisan for both halves and carries its own negative
control on every call, because the obvious HTTP-login readback cannot work: the
template's https APP_URL makes the session cookies secure, so curl over http gets
419 on every login and it looks exactly like a wrong password.
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