Simplify demo: remove topics UI, ID-only connections

- Remove topic selection and peer discovery UI
- Remove MethodSelector and TopicsList components
- Simplify ConnectionForm to just take a connection ID
- Update to use @xtr-dev/rondevu-client@0.3.2
- Demo version: 0.3.2

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

package-lock.json

@@ -1,14 +1,14 @@
 {
   "name": "rondevu-demo",
-  "version": "1.0.2",
+  "version": "0.3.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "rondevu-demo",
-      "version": "1.0.2",
+      "version": "0.3.2",
       "dependencies": {
-        "@xtr-dev/rondevu-client": "^0.3.1",
+        "@xtr-dev/rondevu-client": "^0.3.2",
         "@zxing/library": "^0.21.3",
         "qrcode": "^1.5.4",
         "react": "^18.2.0",
@@ -1170,9 +1170,9 @@
       }
     },
     "node_modules/@xtr-dev/rondevu-client": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/@xtr-dev/rondevu-client/-/rondevu-client-0.3.1.tgz",
-      "integrity": "sha512-KVbssIVFNyIE4kw1Ygj36Ag29TW3CtNJXgrBRbyt/vNS8Phe0i61J0Z2isEzZs+rkuncaE6TWxNzU5CMljhI5g==",
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/@xtr-dev/rondevu-client/-/rondevu-client-0.3.2.tgz",
+      "integrity": "sha512-qWQDP6L675bLksKrk8HYc1ZNoAe0X/1Fj92Lffh9HPHcoeME7ateXb0mD7KlPNNOem6u210q35FNTiJWuHEyuw==",
       "license": "MIT"
     },
     "node_modules/@zxing/library": {