fix(terminal): add postinstall chmod for node-pty spawn-helper on macOS

Workaround for node-pty #850: the prebuilt spawn-helper binary ships
without execute permissions in the npm tarball, causing PTY spawns to
fail with EACCES on macOS CI. This postinstall script ensures +x is set
after npm install. Remove once node-pty >=1.2.0 is available.

Author: abose

src-node/package-lock.json

@@ -8,6 +8,7 @@
     "homepage": "https://github.com/phcode-dev/phoenix",
     "license": "GNU-AGPL3.0",
     "scripts": {
+        "postinstall": "node postinstall.js",
         "_watch_src-node": "cd .. && npm run _watch_src-node"
     },
     "engines": {

src-node/package.json

@@ -0,0 +1,24 @@
+const fs = require("fs");
+const path = require("path");
+
+// Workaround for node-pty #850: spawn-helper ships without +x in npm tarball.
+// Fixed in node-pty >=1.2.0; remove this script once we upgrade.
+if (process.platform === "darwin") {
+    const candidates = ["darwin-arm64", "darwin-x64"];
+    for (const dir of candidates) {
+        const helperPath = path.join(
+            __dirname, "node_modules", "node-pty",
+            "prebuilds", dir, "spawn-helper"
+        );
+        try {
+            fs.chmodSync(helperPath, 0o755);
+            console.log(`postinstall: chmod 755 ${helperPath}`);
+        } catch (e) {
+            if (e.code === "ENOENT") {
+                console.log(`postinstall: spawn-helper not found for ${dir} (expected on other arch)`);
+            } else {
+                console.error(`postinstall: failed to chmod spawn-helper for ${dir}: ${e.message}`);
+            }
+        }
+    }
+}