feat: add shared Toolbox header and themes

package.json

@@ -1,6 +1,6 @@
 {
   "name": "onenote-tools",
-  "version": "0.2.1",
+  "version": "0.3.0",
   "description": "A local-first browser reader and exporter for OneNote files.",
   "license": "MPL-2.0 AND LGPL-2.1-only",
   "private": true,
@@ -27,14 +27,14 @@
     "check": "npm run manifest:check && npm run typecheck && npm run lint && npm run format:check && npm run test && npm run build && npm run toolbox:check"
   },
   "dependencies": {
-    "@add-ideas/toolbox-contract": "0.1.1",
-    "@add-ideas/toolbox-shell-react": "0.1.1",
+    "@add-ideas/toolbox-contract": "0.2.0",
+    "@add-ideas/toolbox-shell-react": "0.2.0",
     "fflate": "^0.8.3",
     "react": "^19.2.6",
     "react-dom": "^19.2.6"
   },
   "devDependencies": {
-    "@add-ideas/toolbox-testkit": "0.1.1",
+    "@add-ideas/toolbox-testkit": "0.2.0",
     "@eslint/js": "^10.0.1",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",