Turn on upper-snake-string-unions and convert profile types, failure reasons and anchor sides at their boundaries

scripts/project-lint.ts

@@ -257,9 +257,8 @@ const rules: DummyRuleMap = {
   "consistent-return": "off",
   // TypeScript's type checking covers exhaustive switches.
   "typescript/switch-exhaustiveness-check": "off",
-  // PENDING USER: union members are values in profiles.json, the Gitea API,
-  // and posted comments; renaming them changes behavior.
-  "explicit-types/upper-snake-string-unions": "off",
+  // A `default` on a switch over a union would hide a new member from TS.
+  "default-case": "off",
   // Off, too much churn:
   // Literal numbers read better than a constant per use.
   "no-magic-numbers": "off",