feat(codex)!: remove the codex-acp harness, app-server is the only codex adapter (#3198)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: joshsny

apps/code/scripts/download-binaries.mjs

@@ -20,34 +20,6 @@ const __dirname = dirname(fileURLToPath(import.meta.url));
 const DEST_DIR = join(__dirname, "..", "resources", "codex-acp");
 
 const BINARIES = [
-  {
-    name: "codex-acp",
-    version: "0.14.0",
-    getUrl: (version, target) => {
-      const ext = target.includes("windows") ? "zip" : "tar.gz";
-      return `https://github.com/zed-industries/codex-acp/releases/download/v${version}/codex-acp-${version}-${target}.${ext}`;
-    },
-    getTarget: () => {
-      const { platform, arch } = process;
-      const targets = {
-        darwin: { arm64: "aarch64-apple-darwin", x64: "x86_64-apple-darwin" },
-        linux: {
-          arm64: "aarch64-unknown-linux-gnu",
-          x64: "x86_64-unknown-linux-gnu",
-        },
-        win32: {
-          arm64: "aarch64-pc-windows-msvc",
-          x64: "x86_64-pc-windows-msvc",
-        },
-      };
-      const platformTargets = targets[platform];
-      if (!platformTargets)
-        throw new Error(`Unsupported platform: ${platform}`);
-      const target = platformTargets[arch];
-      if (!target) throw new Error(`Unsupported arch: ${arch}`);
-      return target;
-    },
-  },
   {
     name: "codex",
     version: "0.140.0",

apps/code/vite-main-plugins.mts

@@ -568,7 +568,7 @@ export function copyCodexAcpBinaries(): Plugin {
 
       const sourceDir = join(__dirname, "resources/codex-acp");
       const binaries = [
-        { name: "codex-acp", winName: "codex-acp.exe" },
+        { name: "codex", winName: "codex.exe" },
         // The native codex CLI must ship next to codex-acp: the app-server
         // sub-adapter resolves it as a sibling and silently falls back to
         // codex-acp when it's missing.

apps/code/vite.main.config.mts

@@ -565,7 +565,6 @@ function copyCodexAcpBinaries(): Plugin {
 
       const sourceDir = join(__dirname, "resources/codex-acp");
       const binaries = [
-        { name: "codex-acp", winName: "codex-acp.exe" },
         { name: "codex", winName: "codex.exe" },
         { name: "rg", winName: "rg.exe" },
       ];

packages/agent/e2e/config.ts

@@ -90,7 +90,6 @@ export const E2E = {
     }
     process.env.OPENAI_BASE_URL = openAiBase();
     process.env.OPENAI_API_KEY = TOKEN;
-    process.env.POSTHOG_CODEX_USE_APP_SERVER = "1";
   },
 
   /** The codexOptions the codex arm passes through `createAcpConnection`. */