test: clean up lint warnings

src/commands/health-format.test.ts

@@ -2,12 +2,9 @@ import { describe, expect, it } from "vitest";
 
 import { formatHealthCheckFailure } from "./health-format.js";
 
-const stripAnsi = (input: string) =>
-  input.replace(
-    // biome-ignore lint/suspicious/noControlCharactersInRegex: strip ANSI escape sequences
-    /\u001b\[[0-9;]*m/g,
-    "",
-  );
+const ansiEscape = String.fromCharCode(27);
+const ansiRegex = new RegExp(`${ansiEscape}\\[[0-9;]*m`, "g");
+const stripAnsi = (input: string) => input.replace(ansiRegex, "");
 
 describe("formatHealthCheckFailure", () => {
   it("keeps non-rich output stable", () => {

src/gateway/gateway-models.profiles.live.test.ts

@@ -209,9 +209,9 @@ describeLive("gateway live (dev agent, profile keys)", () => {
       const nextCfg = {
         ...cfg,
         agents: {
-          ...(cfg.agents ?? {}),
+          ...cfg.agents,
           defaults: {
-            ...(cfg.agents?.defaults ?? {}),
+            ...cfg.agents?.defaults,
             models: Object.fromEntries(
               candidates.map((m) => [`${m.provider}/${m.id}`, {}]),
             ),