Composer: Replace Lit renderer with React, add v0.9 support

.github/workflows/composer_build_and_test.yml

@@ -18,10 +18,14 @@ on:
   push:
     paths:
       - 'tools/composer/**'
+      - 'renderers/react/**'
+      - 'renderers/web_core/**'
       - '.github/workflows/composer_build_and_test.yml'
   pull_request:
     paths:
       - 'tools/composer/**'
+      - 'renderers/react/**'
+      - 'renderers/web_core/**'
       - '.github/workflows/composer_build_and_test.yml'
 
 jobs:
@@ -43,6 +47,14 @@ jobs:
           cache: 'pnpm'
           cache-dependency-path: 'tools/composer/pnpm-lock.yaml'
 
+      - name: Build web_core (dependency of @a2ui/react)
+        working-directory: ./renderers/web_core
+        run: npm ci && npm run build
+
+      - name: Build React renderer (local file dependency)
+        working-directory: ./renderers/react
+        run: npm ci && npm run build
+
       - name: Install dependencies
         working-directory: ./tools/composer
         run: pnpm install

tools/composer/.gitignore

@@ -48,3 +48,4 @@ yarn-error.log*
 __pycache__
 
 .playwright-mcp
+RENDERER_ISSUES.md

tools/composer/package.json

@@ -12,7 +12,8 @@
     "format": "prettier --write \"**/*.{ts,tsx,md}\""
   },
   "dependencies": {
-    "@copilotkit/a2ui-renderer": "1.50.1",
+    "@a2ui/react": "file:../../renderers/react",
+    "@a2ui/web_core": "file:../../renderers/web_core",
     "@copilotkit/react-core": "^1.50.1",
     "@copilotkit/react-ui": "^1.50.1",
     "@copilotkit/runtime": "^1.50.1",