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

tests/workflow.test.ts

@@ -194,9 +194,9 @@ test("central profiles fall back from Codex to Claude to OpenCode", async () =>
   const credentials: unknown = JSON.parse(await readFile("profiles.json", "utf8"));
   const profiles = sequence(mapping(credentials, "profiles.json").get("profiles"), "profiles");
   expect(profiles.map((profile) => profile.get("type"))).toStrictEqual([
-    "codex",
-    "claude",
-    "opencode",
+    "CODEX",
+    "CLAUDE",
+    "OPENCODE",
   ]);
   expect(profiles[2]?.get("model")).toBe("openrouter/qwen/qwen3.8-27b");
   assert(String(profiles[2]?.get("token")).startsWith("v1:"));