chore(showcase): move canonical @CopilotKit version to 1.59.4

Bump canonicalCopilotKitVersion 1.59.2 -> 1.59.4 and pin every
integration's @copilotkit/* to 1.59.4 (locks regenerated). Keeps the
whole showcase on one version instead of letting the langgraph A2UI
demos deviate. Existing per-slug overrides (built-in-agent pkg.pr.new,
ms-agent-harness-dotnet 1.57.2) unchanged.

Author: ranst91

showcase/integrations/ag2/package-lock.json

@@ -11,11 +11,11 @@
   },
   "dependencies": {
     "@ag-ui/client": "^0.0.43",
-    "@copilotkit/a2ui-renderer": "1.59.2",
-    "@copilotkit/react-core": "1.59.2",
-    "@copilotkit/runtime": "1.59.2",
-    "@copilotkit/shared": "1.59.2",
-    "@copilotkit/voice": "1.59.2",
+    "@copilotkit/a2ui-renderer": "1.59.4",
+    "@copilotkit/react-core": "1.59.4",
+    "@copilotkit/runtime": "1.59.4",
+    "@copilotkit/shared": "1.59.4",
+    "@copilotkit/voice": "1.59.4",
     "@hashbrownai/core": "0.5.0-beta.4",
     "@hashbrownai/react": "0.5.0-beta.4",
     "@json-render/core": "0.18.0",
@@ -51,12 +51,12 @@
   },
   "overrides": {
     "@copilotkit/web-inspector": {
-      "@copilotkit/core": "1.59.2"
+      "@copilotkit/core": "1.59.4"
     }
   },
   "pnpm": {
     "overrides": {
-      "@copilotkit/web-inspector>@copilotkit/core": "1.59.2"
+      "@copilotkit/web-inspector>@copilotkit/core": "1.59.4"
     }
   }
 }

showcase/integrations/ag2/package.json

@@ -11,11 +11,11 @@
   },
   "dependencies": {
     "@ag-ui/client": "^0.0.43",
-    "@copilotkit/a2ui-renderer": "1.59.2",
-    "@copilotkit/react-core": "1.59.2",
-    "@copilotkit/runtime": "1.59.2",
-    "@copilotkit/shared": "1.59.2",
-    "@copilotkit/voice": "1.59.2",
+    "@copilotkit/a2ui-renderer": "1.59.4",
+    "@copilotkit/react-core": "1.59.4",
+    "@copilotkit/runtime": "1.59.4",
+    "@copilotkit/shared": "1.59.4",
+    "@copilotkit/voice": "1.59.4",
     "@hashbrownai/core": "0.5.0-beta.4",
     "@hashbrownai/react": "0.5.0-beta.4",
     "@json-render/core": "0.18.0",
@@ -51,12 +51,12 @@
   },
   "overrides": {
     "@copilotkit/web-inspector": {
-      "@copilotkit/core": "1.59.2"
+      "@copilotkit/core": "1.59.4"
     }
   },
   "pnpm": {
     "overrides": {
-      "@copilotkit/web-inspector>@copilotkit/core": "1.59.2"
+      "@copilotkit/web-inspector>@copilotkit/core": "1.59.4"
     }
   }
 }

showcase/integrations/agno/package-lock.json

@@ -10,11 +10,11 @@
     "test:e2e": "playwright test"
   },
   "dependencies": {
-    "@copilotkit/a2ui-renderer": "1.59.2",
-    "@copilotkit/react-core": "1.59.2",
+    "@copilotkit/a2ui-renderer": "1.59.4",
+    "@copilotkit/react-core": "1.59.4",
     "@copilotkit/runtime": "https://pkg.pr.new/CopilotKit/CopilotKit/@copilotkit/runtime@4482",
-    "@copilotkit/shared": "1.59.2",
-    "@copilotkit/voice": "1.59.2",
+    "@copilotkit/shared": "1.59.4",
+    "@copilotkit/voice": "1.59.4",
     "@hashbrownai/core": "0.5.0-beta.4",
     "@hashbrownai/react": "0.5.0-beta.4",
     "@json-render/core": "0.18.0",