Drop Deno from the agents and spawn child processes directly

tests/entrypoints.test.ts

@@ -1,10 +1,9 @@
+import { spawnSync } from "node:child_process";
 import process from "node:process";
 import { fileURLToPath } from "node:url";
 
 import { expect, test } from "vite-plus/test";
 
-import { output } from "../src/command.ts";
-
 // Each phase runs as `node src/<phase>.ts` with no build step. Node loads the
 // whole import graph, stripping types, before the phase reads its first
 // variable, so failing on that variable proves every module loads.
@@ -14,14 +13,13 @@ const PHASES: [phase: string, firstVariable: string][] = [
   ["post", "BOT_AGENTS_MANIFEST"],
 ];
 
-test.each(PHASES)("Node loads the %s phase", async (phase, firstVariable) => {
+test.each(PHASES)("Node loads the %s phase", (phase, firstVariable) => {
   const path = fileURLToPath(new URL(`../src/${phase}.ts`, import.meta.url));
-  const result = await output(process.execPath, {
-    args: [path],
+  const result = spawnSync(process.execPath, [path], {
     env: { PATH: process.env.PATH ?? "" },
-    clearEnv: true,
-    stdin: "null",
+    stdio: ["ignore", "pipe", "pipe"],
+    encoding: "utf8",
   });
-  expect(result.success).toBe(false);
-  expect(new TextDecoder().decode(result.stderr)).toContain(`${firstVariable} is not set`);
+  expect(result.status).not.toBe(0);
+  expect(result.stderr).toContain(`${firstVariable} is not set`);
 });

tests/workflow.test.ts

@@ -1,10 +1,10 @@
+import { spawnSync } from "node:child_process";
 import { readdir, readFile, rm, stat } from "node:fs/promises";
 import process from "node:process";
 
 import { assert, expect, test } from "vite-plus/test";
 import { parse } from "yaml";
 
-import { output } from "../src/command.ts";
 import { isNotFound } from "../src/errors.ts";
 import { isMapping } from "../src/json.ts";
 import type { JsonObject } from "../src/json.ts";
@@ -76,12 +76,16 @@ test("the source protection script stages immutable action files", async () => {
   const temp = await makeTempDir();
   const outputFile = `${temp}/output`;
   try {
-    const result = await output("/bin/bash", {
-      args: ["scripts/protect-source.sh"],
-      env: { ACTION_PATH: process.cwd(), GITHUB_OUTPUT: outputFile, RUNNER_TEMP: temp },
-      stderr: "piped",
+    const result = spawnSync("/bin/bash", ["scripts/protect-source.sh"], {
+      env: {
+        ...process.env,
+        ACTION_PATH: process.cwd(),
+        GITHUB_OUTPUT: outputFile,
+        RUNNER_TEMP: temp,
+      },
+      encoding: "utf8",
     });
-    assert(result.success, new TextDecoder().decode(result.stderr));
+    assert(result.status === 0, result.stderr);
 
     const path = (await readFile(outputFile, "utf8")).trim().slice(5);
     const files = [
@@ -160,6 +164,11 @@ test("installs the OpenCode CLI", async () => {
   assert(action.includes("opencode-ai"));
 });
 
+test("does not install Deno", async () => {
+  const action = await readFile("action.yml", "utf8");
+  expect(action).not.toMatch(/\bdeno\b/iu);
+});
+
 test("profile preparation does not receive provider credentials", async () => {
   const runner = await readFile("src/run.ts", "utf8");
   assert(runner.includes("await prepareProfile(profile);"));