refactor(release): polish Effect publish scripts

Use Effect.ensuring to restore temporary package manifests on failure and tidy the opencode packager with a small parallel hash helper so the stacked Effect rewrite reads cleaner without changing behavior.

packages/plugin/script/publish.ts

@@ -14,15 +14,47 @@ type PackageJson = {
   exports: Record<string, string>
 }
 
+const packageJson = (value: unknown) => {
+  if (
+    typeof value === "object" &&
+    value !== null &&
+    "name" in value &&
+    typeof value.name === "string" &&
+    "version" in value &&
+    typeof value.version === "string" &&
+    "exports" in value &&
+    typeof value.exports === "object" &&
+    value.exports !== null
+  ) {
+    return {
+      name: value.name,
+      version: value.version,
+      exports: Object.fromEntries(
+        Object.entries(value.exports).filter((entry): entry is [string, string] => typeof entry[1] === "string"),
+      ),
+    }
+  }
+  throw new Error("invalid plugin package manifest")
+}
+
 const published = (name: string, version: string) =>
   Effect.promise(() => $`npm view ${name}@${version} version`.nothrow()).pipe(
     Effect.map((result) => result.exitCode === 0),
   )
 
+const withPackageJson = (
+  pkg: PackageJson,
+  next: { name: string; version: string; exports: Record<string, { import: string; types: string }> },
+) =>
+  Effect.promise(() => Bun.write("package.json", JSON.stringify(next, null, 2))).pipe(
+    Effect.zipRight(Effect.promise(() => $`bun pm pack && npm publish *.tgz --tag ${Script.channel} --access public`)),
+    Effect.ensuring(Effect.promise(() => Bun.write("package.json", JSON.stringify(pkg, null, 2)))),
+  )
+
 const program = Effect.gen(function* () {
   yield* Effect.promise(() => $`bun tsc`)
 
-  const pkg = (yield* Effect.promise(() => import("../package.json").then((m) => m.default))) as PackageJson
+  const pkg = packageJson(yield* Effect.promise(() => import("../package.json").then((m) => m.default)))
   if (yield* published(pkg.name, pkg.version)) {
     console.log(`already published ${pkg.name}@${pkg.version}`)
     return
@@ -38,9 +70,7 @@ const program = Effect.gen(function* () {
     ),
   }
 
-  yield* Effect.promise(() => Bun.write("package.json", JSON.stringify(next, null, 2)))
-  yield* Effect.promise(() => $`bun pm pack && npm publish *.tgz --tag ${Script.channel} --access public`)
-  yield* Effect.promise(() => Bun.write("package.json", JSON.stringify(pkg, null, 2)))
+  yield* withPackageJson(pkg, next)
 })
 
 await Effect.runPromise(program)