The remaining ui-shard reds were one class, not six bugs: every one of them did
`await import(<heavy component>)` INSIDE an `it()`, so Vite's transform of the
dependency graph was billed to that test's timeout. Measured costs against the
budgets they had to fit in:
ProxyRegistryManager 86s import vs 30s / 60s / 5s budgets (render itself: 567ms)
claudeTlsClient ~12s import vs 5s default
useProviderConnections 1050-line hook, whole dashboard graph, vs 5s default
That is why they looked like cross-file pollution: on an idle box the import
squeaked under the limit, and under the ui suite's 20 parallel workers it did not.
Running claudeTlsClient ALONE on a loaded box reproduces it — the trigger is CPU
contention, not a neighbouring file. The sibling chatgptTlsClient/grokTlsClient
tests import the same graph and never fail, because they import statically at
module scope, where the cost falls on the collection phase which has no per-test
budget. Every fix here does the same: static import or a beforeAll with its own
budget.
AutoComboCatalog also explains its own blast radius: the timeout aborted inside an
open act(), leaking an unbalanced act scope that then failed the file's three
remaining tests in ~20ms with 'overlapping act() calls'. One slow import, four reds.
CoolingConnectionsPanel is the one production change. It imported providerText from
the ../providerPageHelpers barrel, but that symbol is DEFINED in the
../providerCredentialText leaf and only re-exported by the barrel — which drags
providerRegistry (352 providers) and the rest of the provider-page graph into a
"use client" component for one string helper. Verified before accepting: the
component used nothing else from the barrel, the barrel has no top-level
side-effect to lose (the empty-registry hazard this repo has hit before does not
apply), typecheck:core is clean, and the panel's first test drops from ~4s to 95ms.
The import was suboptimal, never broken — the screen was not failing for users.
No assertion was weakened anywhere. expect() counts are unchanged (25/25, 4/4) or
up by one (AutoComboCatalog 11 -> 12); the #8855 autofill sentinels, the
data-1p-ignore / data-lpignore guards and the dead-status round-trip are intact.
The #5918 TDZ guard was proven still live by mutation, not by absence of red:
moving useProxyBatchOperations(load) above its const reproduced
'ReferenceError: Cannot access load before initialization' in 207ms, then the
production file was restored (diff empty).
tests/unit/ui under load: 17 failed files / 45 failed tests -> 4 failed files /
4 failed tests, none of them these. The four left are compression-guidance-7530,
compressionPanel, compressionUltraTier and lobe-provider-icons-stepfun, untouched
and uninvestigated.
Refs #10692
