feat: add coding project schema v2 migration

electron/coding-projects/atomic-json.ts

@@ -0,0 +1,27 @@
+import { randomUUID } from 'node:crypto';
+import { mkdir, readFile, rename, rm, writeFile } from 'node:fs/promises';
+import path from 'node:path';
+
+export type JsonFileWriter = (filePath: string, value: unknown) => Promise<void>;
+
+export async function atomicWriteText(filePath: string, source: string): Promise<void> {
+  await mkdir(path.dirname(filePath), { recursive: true });
+  const temporaryPath = path.join(
+    path.dirname(filePath),
+    `.${path.basename(filePath)}.${randomUUID()}.tmp`,
+  );
+  try {
+    await writeFile(temporaryPath, source, { encoding: 'utf8', flag: 'wx' });
+    await rename(temporaryPath, filePath);
+  } finally {
+    await rm(temporaryPath, { force: true }).catch(() => undefined);
+  }
+}
+
+export async function atomicWriteJson(filePath: string, value: unknown): Promise<void> {
+  await atomicWriteText(filePath, `${JSON.stringify(value, null, 2)}\n`);
+}
+
+export async function readJsonFile(filePath: string): Promise<unknown> {
+  return JSON.parse(await readFile(filePath, 'utf8')) as unknown;
+}