The backend lint script covered src and scripts; the frontend's has always covered src and tests. So roughly sixty backend test files had never been linted at all.
That was a documented deferral rather than an oversight — the config said so in as many words, because tsconfig.json includes only src and type-aware rules had no program to resolve the test files against. tsconfig.test.json is that program, exactly as frontend/tsconfig.test.json was for the same problem in #137. It is separate from tsconfig.json rather than a widening of it, because that one drives the build and emits to dist, and pulling the suite in would ship the tests. The files were already type-checked at run time by ts-jest; this adds nothing to that, only to what the linter can see.
Pointing it at tests produced 77 warnings and no errors. Sixty of those were rules that cannot be true in a test, so they are switched off here rather than left to accumulate — #60's argument, that a gate nobody reads is not a gate, and that a rule which cannot be true is noise hiding the rules that can. Forty-one alone were hardcoded passwords, which are the entire point of a test and which this project's own rule says must live only in test paths, which is here. The rest were a stub server on http to a socket the test opened itself, an RFC 5737 documentation IP, os.tmpdir, Math.random for a run id, and sorting two arrays to compare them.
What was left was signal, and it found a real one on the first run. testDb.ts cleaned up settings with LIKE 'email\_%', and in a JavaScript string that backslash does nothing: the pattern is 'email_%', and an underscore in SQL LIKE matches any single character. It meant "email plus any one character" rather than "email_". It deleted the right rows only because no other key begins with those letters followed by something else — a setting called emailing_enabled would have been swept away between suites, silently, in a file that never mentions it. It now uses an explicit ESCAPE clause.
It also found five dead `const before: string[] = []` declarations in uploadValidation, left over from #228's redesign of that suite. The tests assert properly through filesSettlingTo; the variables did nothing.
Seven warnings remain, all in routesAreWrapped and workflowGate, and all judgement calls about guard-test complexity rather than defects. Leaving them visible is the point of having lint here at all.
Closes#298
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
