faster

src/main/fs-service.ts

@@ -1,5 +1,5 @@
-import { readdir, readFile, rm, stat, writeFile } from 'node:fs/promises'
-import { join, relative, sep } from 'node:path'
+import { mkdir, readdir, readFile, rm, stat, writeFile } from 'node:fs/promises'
+import { dirname, join, relative, sep } from 'node:path'
 import { listFiles } from './search-service'
 
 export interface FileNode {
@@ -120,6 +120,20 @@ export async function writeProjectFile(root: string, rel: string, content: strin
   await writeFile(join(root, rel), content, 'utf8')
 }
 
+/**
+ * Create a new, empty text file (relative path). Creates parent folders as
+ * needed, refuses to escape the project root, and throws if the file already
+ * exists so an accidental name collision never clobbers existing content.
+ */
+export async function createProjectFile(root: string, rel: string): Promise<void> {
+  const target = join(root, rel)
+  if (relative(root, target).startsWith('..')) throw new Error('outside project root')
+  const existing = await stat(target).catch(() => null)
+  if (existing) throw new Error('file already exists')
+  await mkdir(dirname(target), { recursive: true })
+  await writeFile(target, '', { encoding: 'utf8', flag: 'wx' })
+}
+
 /** Delete a project file or folder (relative path). Stays inside the project root. */
 export async function deleteProjectFile(root: string, rel: string): Promise<void> {
   const target = join(root, rel)