Add apply version script, bump everything to 0.3.0

scripts/apply_version.ts

@@ -0,0 +1,37 @@
+import {readFileSync, writeFileSync, readdirSync} from "fs"
+import {join} from "path"
+
+// Read the root package.json to get the version
+const rootPackage = JSON.parse(readFileSync("package.json", "utf8"))
+const version = rootPackage.version
+
+if (!version) {
+  console.error("No version found in root package.json")
+  process.exit(1)
+}
+
+// Get all directories in packages/
+const packagesDir = "packages"
+const packages = readdirSync(packagesDir, {withFileTypes: true})
+  .filter(dirent => dirent.isDirectory())
+  .map(dirent => dirent.name)
+
+// Update each package.json
+for (const pkg of packages) {
+  const packageJsonPath = join(packagesDir, pkg, "package.json")
+
+  try {
+    const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf8"))
+
+    // Update the package version
+    packageJson.version = version
+
+    // Write back to file with proper formatting
+    writeFileSync(packageJsonPath, JSON.stringify(packageJson, null, 2) + "\n")
+    console.log(`Updated ${packageJsonPath}`)
+  } catch (error) {
+    console.error(`Error processing ${packageJsonPath}:`, error)
+  }
+}
+
+console.log("Version update complete!")