feat: add VS Code IDE bridge extension

packages/vscode-ide-bridge/src/server/lockfile.ts

@@ -0,0 +1,56 @@
+import { mkdir, rm, writeFile } from 'node:fs/promises'
+import { homedir } from 'node:os'
+import { join } from 'node:path'
+import type { LockfilePayload } from './protocol.js'
+
+type BuildLockfilePayloadInput = {
+  pid: number
+  ideName: string
+  workspaceFolders: string[]
+  authToken: string
+  runningInWindows: boolean
+}
+
+function getClaudeConfigDir(): string {
+  return (process.env.CLAUDE_CONFIG_DIR ?? join(homedir(), '.claude')).normalize(
+    'NFC',
+  )
+}
+
+export function buildLockfilePayload(
+  input: BuildLockfilePayloadInput,
+): LockfilePayload {
+  return {
+    workspaceFolders: input.workspaceFolders,
+    pid: input.pid,
+    ideName: input.ideName,
+    transport: 'ws',
+    runningInWindows: input.runningInWindows,
+    authToken: input.authToken,
+  }
+}
+
+export function getLockfileDir(): string {
+  return join(getClaudeConfigDir(), 'ide')
+}
+
+export function getLockfilePath(port: number): string {
+  return join(getLockfileDir(), `${port}.lock`)
+}
+
+export async function writeLockfile(
+  port: number,
+  payload: LockfilePayload,
+): Promise<string> {
+  const lockfilePath = getLockfilePath(port)
+  await mkdir(getLockfileDir(), { recursive: true })
+  await writeFile(lockfilePath, JSON.stringify(payload), 'utf8')
+  return lockfilePath
+}
+
+export async function removeLockfile(lockfilePath: string | null): Promise<void> {
+  if (!lockfilePath) {
+    return
+  }
+  await rm(lockfilePath, { force: true })
+}