Three regressions inherited by every PR rebased onto release/v3.8.51, caught and documented with the exact failing output.
The one that mattered most: src/shared/providers/webSessionCredentials.ts did not parse. The UC merge (#11513) inserted the uc: entry inside maxai.storageKeys and lost the array's closing ], plus the entry's }, leaving `ERROR: Expected "]" but found ":"` at line 351. That module is imported by the provider API routes, bulk-web-session, autoCombo's virtualFactory, keepaliveThreshold and dashboard components, so the break was live on the tip and flooded unrelated catalog tests with transform failures. That was my conflict resolution, not the contributor's code — thank you for catching it and for tracing it to the root commit rather than patching around the symptom.
Also fixed: the duplicate bin/cli/utils/volatileEnvPath.mjs entry in PACK_ARTIFACT_REQUIRED_PATHS (findMissingArtifactPaths reported it twice), and UC image models made prefix-addressable without letting them claim historical bare model ids belonging to other providers.
Reconciled on merge: #12394 landed the busy_timeout/probe work first, so src/lib/db/core.ts takes the tip's side. probeUtils.ts is the union of both rather than either side — this PR's message regex is wider (SQLite also reports "database table is locked", "database schema is locked" and "database is busy"), while #12394 added the driver code/errcode path that keeps a transient lock from being classified as corruption and renaming the database away. Taking either alone would have dropped the other half; this PR's own ENOENT test is what surfaced it.
Verified: 76/76 across uc-image, probe-9541-repro, web-session-contract, pack-artifact-policy, bulk-web-session-import and exclusive-connection-leases, and every changed .ts file parses.
Thanks @backryun.
getDbInstance() ran PRAGMA journal_mode = WAL as the connection's first statement, before PRAGMA busy_timeout, and openSqliteDatabase() passes no driver-level timeout. A process opening the database while another closed its WAL connection — checkpoint plus WAL delete hold an EXCLUSIVE lock for a few hundred microseconds — therefore died with `database is locked` instead of waiting. That is the flake behind exclusive-connection-leases.test.ts on release/v3.8.51 runs 33525300898 and 33493797519 and on unrelated PR runs.
The second half is worse than the flake: isTransientProbeError matched /SQLITE_BUSY/ against error.message, but both drivers report the plain text `database is locked` and put the code in .code / .errcode. A transient lock during the corruption probe therefore took the corrupt-database path and renamed the file to storage.sqlite.probe-failed-… with "Manual recovery required". The probe now recognises the drivers' real BUSY/PROTOCOL/IOERR signals.
Validated in a combined worktree with all 25 PRs of this batch boarded together: typecheck:core clean, 443/443 node-runner tests plus 14/14 vitest across every test file the batch touches, and check-changelog-integrity, check:cycles (418 files), check:provider-consistency (272 REGISTRY entries, 355 canonical providers), check:docs-counts, check:docs-sync (42 locales) and check-file-size all green.
Thanks @pacocartones.
