fix: add missing @tiptap/core dependency for CI build

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: wutongci

package.json

@@ -47,6 +47,7 @@
     "@tauri-apps/plugin-dialog": "2.6.0",
     "@tauri-apps/plugin-global-shortcut": "2.3.1",
     "@tauri-apps/plugin-shell": "2.3.4",
+    "@tiptap/core": "^3.19.0",
     "@tiptap/extension-highlight": "^3.19.0",
     "@tiptap/extension-image": "^3.19.0",
     "@tiptap/extension-placeholder": "^3.18.0",