Bump to 1.0.38: fix postinstall not copying app dir when binary exists

The postinstall.mjs early-returned when the binary was already present,
skipping the app/ directory copy from the platform package entirely.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/tfcode/package.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.0.37",
+  "version": "1.0.38",
   "name": "@toothfairyai/tfcode",
   "type": "module",
   "license": "MIT",

packages/tfcode/script/postinstall-tfcode.mjs

@@ -93,6 +93,25 @@ async function downloadBinary() {
 
   if (fs.existsSync(existingBinary)) {
     console.log(`✓ Binary already exists at ${existingBinary}`)
+    // Still need to copy app dir from platform package if missing
+    const targetAppDir = path.join(binDir, "app")
+    if (!fs.existsSync(path.join(targetAppDir, "dist", "index.html"))) {
+      let target = `tfcode-${platform}-${arch}`
+      if (needsBaseline) target += "-baseline"
+      if (abi) target += `-${abi}`
+      const pkgName = `@toothfairyai/${target}`
+      try {
+        const pkgUrl = import.meta.resolve(`${pkgName}/package.json`)
+        const pkgDir = path.dirname(fileURLToPath(pkgUrl))
+        const srcAppDir = path.join(pkgDir, "bin", "app")
+        if (fs.existsSync(path.join(srcAppDir, "dist", "index.html"))) {
+          fs.cpSync(srcAppDir, targetAppDir, { recursive: true })
+          console.log("✓ Web app copied from platform package")
+        }
+      } catch (e) {
+        console.log(`! Could not copy web app: ${e.message}`)
+      }
+    }
     return
   }