Migrate to Euro-Office and refresh the editor home experience.

Swap Document Server to Euro-Office, add blank-document creation, and restyle the app with an Office-like light/dark theme and compact editor toolbar.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/backend/src/services/blankDocument.ts

@@ -0,0 +1,42 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { addDocument } from './sessionStore.js';
+import type { SessionDoc } from '../types/session.js';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+export const BLANK_TYPES = ['docx', 'xlsx', 'pptx', 'pdf', 'hwpx'] as const;
+export type BlankType = (typeof BLANK_TYPES)[number];
+
+export function isBlankType(value: string): value is BlankType {
+  return (BLANK_TYPES as readonly string[]).includes(value);
+}
+
+/** Resolve templates dir for both tsx (src) and compiled dist. */
+async function templatesDir(): Promise<string> {
+  const candidates = [
+    path.resolve(__dirname, '../../templates'),
+    path.resolve(__dirname, '../templates'),
+  ];
+  for (const dir of candidates) {
+    try {
+      await fs.access(dir);
+      return dir;
+    } catch {
+      /* try next */
+    }
+  }
+  return candidates[0];
+}
+
+export async function createBlankDocument(
+  sessionId: string,
+  type: BlankType,
+): Promise<SessionDoc> {
+  const dir = await templatesDir();
+  const templatePath = path.join(dir, `blank.${type}`);
+  const buffer = await fs.readFile(templatePath);
+  const filename = `새문서.${type}`;
+  return addDocument(sessionId, filename, type, buffer);
+}