fix: HIGH issues #13,#14,#18,#19,#20 — frontend state/sync: copy-paste selection, dynamic activeLayer, group creation, Yjs awareness protocol, connect sync

backend/package-lock.json

@@ -15,6 +15,7 @@
         "better-sqlite3": "^11.0.0",
         "fastify": "^4.28.0",
         "y-leveldb": "^0.2.0",
+        "y-protocols": "^1.0.7",
         "yjs": "^13.6.0"
       },
       "devDependencies": {
@@ -3868,6 +3869,25 @@
         "yjs": "^13.0.0"
       }
     },
+    "node_modules/y-protocols": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/y-protocols/-/y-protocols-1.0.7.tgz",
+      "integrity": "sha512-YSVsLoXxO67J6eE/nV4AtFtT3QEotZf5sK5BHxFBXso7VDUT3Tx07IfA6hsu5Q5OmBdMkQVmFZ9QOA7fikWvnw==",
+      "dependencies": {
+        "lib0": "^0.2.85"
+      },
+      "engines": {
+        "node": ">=16.0.0",
+        "npm": ">=8.0.0"
+      },
+      "funding": {
+        "type": "GitHub Sponsors ❤",
+        "url": "https://github.com/sponsors/dmonad"
+      },
+      "peerDependencies": {
+        "yjs": "^13.0.0"
+      }
+    },
     "node_modules/yjs": {
       "version": "13.6.31",
       "resolved": "https://registry.npmjs.org/yjs/-/yjs-13.6.31.tgz",