fix(deps): update dependency zod to v4

package-lock.json

@@ -60,7 +60,7 @@
                 "react-drawio": "^1.0.3",
                 "react-icons": "^5.5.0",
                 "react-markdown": "^10.1.0",
-                "react-resizable-panels": "^4.0.0",
+                "react-resizable-panels": "^3.0.6",
                 "remark-gfm": "^4.0.1",
                 "server-only": "^0.0.1",
                 "sonner": "^2.0.7",
@@ -13845,6 +13845,16 @@
                 "node": ">= 0.8"
             }
         },
+        "node_modules/encoding": {
+            "version": "0.1.13",
+            "resolved": "https://registry.npmmirror.com/encoding/-/encoding-0.1.13.tgz",
+            "integrity": "sha512-ETBauow1T35Y/WZMkio9jiM0Z5xjHHmJ4XmjZOq1l/dXz3lr2sRn87nJy20RupqSh1F2m3HHPSp8ShIPQJrJ3A==",
+            "license": "MIT",
+            "optional": true,
+            "dependencies": {
+                "iconv-lite": "^0.6.2"
+            }
+        },
         "node_modules/end-of-stream": {
             "version": "1.4.5",
             "resolved": "https://registry.npmmirror.com/end-of-stream/-/end-of-stream-1.4.5.tgz",
@@ -20712,13 +20722,13 @@
             }
         },
         "node_modules/react-resizable-panels": {
-            "version": "4.0.15",
-            "resolved": "https://registry.npmjs.org/react-resizable-panels/-/react-resizable-panels-4.0.15.tgz",
-            "integrity": "sha512-+ygM/EI2h4Qc/cl2fasQ2qwOgNfpQwXLNTU5PqhhPerliX+wnbf7ejcqran7lz3BqABzjddf0pJ3j3G/+A0v9Q==",
+            "version": "3.0.6",
+            "resolved": "https://registry.npmjs.org/react-resizable-panels/-/react-resizable-panels-3.0.6.tgz",
+            "integrity": "sha512-b3qKHQ3MLqOgSS+FRYKapNkJZf5EQzuf6+RLiq1/IlTHw99YrZ2NJZLk4hQIzTnnIkRg2LUqyVinu6YWWpUYew==",
             "license": "MIT",
             "peerDependencies": {
-                "react": "^18.0.0 || ^19.0.0",
-                "react-dom": "^18.0.0 || ^19.0.0"
+                "react": "^16.14.0 || ^17.0.0 || ^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+                "react-dom": "^16.14.0 || ^17.0.0 || ^18.0.0 || ^19.0.0 || ^19.0.0-rc"
             }
         },
         "node_modules/react-style-singleton": {

package.json

@@ -79,7 +79,7 @@
         "react-drawio": "^1.0.3",
         "react-icons": "^5.5.0",
         "react-markdown": "^10.1.0",
-        "react-resizable-panels": "^4.0.0",
+        "react-resizable-panels": "^3.0.6",
         "remark-gfm": "^4.0.1",
         "server-only": "^0.0.1",
         "sonner": "^2.0.7",

packages/mcp-server/package-lock.json

@@ -12,7 +12,7 @@
                 "@modelcontextprotocol/sdk": "^1.0.4",
                 "linkedom": "^0.18.0",
                 "open": "^10.1.0",
-                "zod": "^3.24.0"
+                "zod": "^4.0.0"
             },
             "bin": {
                 "next-ai-drawio-mcp": "dist/index.js"
@@ -2024,9 +2024,9 @@
             }
         },
         "node_modules/zod": {
-            "version": "3.25.76",
-            "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-            "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+            "version": "4.2.1",
+            "resolved": "https://registry.npmjs.org/zod/-/zod-4.2.1.tgz",
+            "integrity": "sha512-0wZ1IRqGGhMP76gLqz8EyfBXKk0J2qo2+H3fi4mcUP/KtTocoX08nmIAHl1Z2kJIZbZee8KOpBCSNPRgauucjw==",
             "license": "MIT",
             "peer": true,
             "funding": {

packages/mcp-server/package.json

@@ -39,7 +39,7 @@
         "@modelcontextprotocol/sdk": "^1.0.4",
         "linkedom": "^0.18.0",
         "open": "^10.1.0",
-        "zod": "^3.24.0"
+        "zod": "^4.0.0"
     },
     "devDependencies": {
         "@types/node": "^20",