fix: handle permission errors for binaries on Linux/WSL

- Add automatic chmod +x when running coder.js on Unix systems
- Fix postinstall script to use octal notation for chmod (0o755)
- Add better error messages when binary is not executable
- Always try to fix permissions for existing binaries
- Bump version to 0.1.2 for hotfix release

codex-cli/bin/coder.js

@@ -58,6 +58,25 @@ if (!targetTriple) {
 
 const binaryPath = path.join(__dirname, "..", "bin", `coder-${targetTriple}`);
 
+// Check if binary exists and try to fix permissions if needed
+import { existsSync, chmodSync } from "fs";
+if (existsSync(binaryPath)) {
+  try {
+    // Ensure binary is executable on Unix-like systems
+    if (platform !== "win32") {
+      chmodSync(binaryPath, 0o755);
+    }
+  } catch (e) {
+    // Ignore permission errors, will be caught below if it's a real problem
+  }
+} else {
+  console.error(`Binary not found: ${binaryPath}`);
+  console.error(`Please try reinstalling the package:`);
+  console.error(`  npm uninstall -g @just-every/coder`);
+  console.error(`  npm install -g @just-every/coder`);
+  process.exit(1);
+}
+
 // Use an asynchronous spawn instead of spawnSync so that Node is able to
 // respond to signals (e.g. Ctrl-C / SIGINT) while the native binary is
 // executing. This allows us to forward those signals to the child process
@@ -72,10 +91,13 @@ const child = spawn(binaryPath, process.argv.slice(2), {
 
 child.on("error", (err) => {
   // Typically triggered when the binary is missing or not executable.
-  // Re-throwing here will terminate the parent with a non-zero exit code
-  // while still printing a helpful stack trace.
-  // eslint-disable-next-line no-console
-  console.error(err);
+  if (err.code === 'EACCES') {
+    console.error(`Permission denied: ${binaryPath}`);
+    console.error(`Try running: chmod +x "${binaryPath}"`);
+    console.error(`Or reinstall the package with: npm install -g @just-every/coder`);
+  } else {
+    console.error(err);
+  }
   process.exit(1);
 });
 

codex-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@just-every/coder",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "Apache-2.0",
   "description": "Lightweight coding agent that runs in your terminal - fork of OpenAI Codex",
   "bin": {

codex-cli/postinstall.js

@@ -78,9 +78,19 @@ async function main() {
     const binaryName = `${binary}-${targetTriple}${binaryExt}`;
     const localPath = join(binDir, binaryName);
     
-    // Skip if already exists
+    // Skip if already exists and has correct permissions
     if (existsSync(localPath)) {
-      console.log(`✓ ${binaryName} already exists`);
+      // Always try to fix permissions on Unix-like systems
+      if (!isWindows) {
+        try {
+          chmodSync(localPath, 0o755);
+          console.log(`✓ ${binaryName} already exists (permissions fixed)`);
+        } catch (e) {
+          console.log(`✓ ${binaryName} already exists`);
+        }
+      } else {
+        console.log(`✓ ${binaryName} already exists`);
+      }
       continue;
     }
     
@@ -92,7 +102,7 @@ async function main() {
       
       // Make executable on Unix-like systems
       if (!isWindows) {
-        chmodSync(localPath, '755');
+        chmodSync(localPath, 0o755);
       }
       
       console.log(`✓ Downloaded ${binaryName}`);