improvements

src/main/notes-service.ts

@@ -0,0 +1,28 @@
+/**
+ * Project scratch note: a plain text file at `<project>/.notes.txt`.
+ *
+ * Deliberately not JSON and not part of `.helder/`. It is a note the user
+ * writes by hand, so it must stay readable and editable outside Helder.
+ */
+import { readFile, writeFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { logger } from './logger'
+
+export const NOTES_FILE = '.notes.txt'
+
+/** The note's text. Empty string when the project has no note yet. */
+export async function readNote(root: string): Promise<string> {
+  try {
+    return await readFile(join(root, NOTES_FILE), 'utf8')
+  } catch (err) {
+    // ENOENT is the normal "no note yet" case, anything else is worth knowing.
+    if ((err as NodeJS.ErrnoException).code !== 'ENOENT') {
+      logger.warn('notes', 'read failed', { root, err: String(err) })
+    }
+    return ''
+  }
+}
+
+export async function writeNote(root: string, text: string): Promise<void> {
+  await writeFile(join(root, NOTES_FILE), text, 'utf8')
+}