chore: Enable no-useless-concat (removing the lint rule from the disabled list automatically enables it because it is in the "suspicious" group).

.oxlintrc.json

@@ -21,8 +21,6 @@
     "unicorn/require-post-message-target-origin": "off",
     "typescript/no-extraneous-class": "off",
     "oxc/no-async-endpoint-handlers": "off",
-    "eslint/no-useless-concat": "off",
-    "eslint/no-unused-vars": "error",
     "eslint/no-new": "off",
     "eslint/preserve-caught-error": "off",
   },

src/gateway/hooks-mapping.test.ts

@@ -65,7 +65,7 @@ describe("hooks mapping", () => {
   it("runs transform module", async () => {
     const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-hooks-"));
     const modPath = path.join(dir, "transform.mjs");
-    const placeholder = "${" + "payload.name}";
+    const placeholder = "${payload.name}";
     fs.writeFileSync(
       modPath,
       `export default ({ payload }) => ({ kind: "wake", text: \`Ping ${placeholder}\` });`,

test/media-understanding.auto.e2e.test.ts

@@ -64,7 +64,7 @@ describe("media understanding auto-detect (e2e)", () => {
       await writeExecutable(
         binDir,
         "sherpa-onnx-offline",
-        "#!/usr/bin/env bash\n" + 'echo "{\\"text\\":\\"sherpa ok\\"}"\n',
+        `#!/usr/bin/env bash\necho "{\\"text\\":\\"sherpa ok\\"}"\n`,
       );
 
       process.env.PATH = `${binDir}:/usr/bin:/bin`;
@@ -143,7 +143,7 @@ describe("media understanding auto-detect (e2e)", () => {
       await writeExecutable(
         binDir,
         "gemini",
-        "#!/usr/bin/env bash\necho '{" + '\\"response\\":\\"gemini ok\\"' + "}'\n",
+        `#!/usr/bin/env bash\necho '{\\"response\\":\\"gemini ok\\"' + "}'\n`,
       );
 
       process.env.PATH = `${binDir}:/usr/bin:/bin`;