Address review feedback: use generated RPC types, allow null copilotHome, strengthen test assertions

.lastmerge

@@ -1 +1 @@
-e42b726ca42bd1b2e099a956c9287ba9435ba3e5
+ced6613253a595769d2e77547f9e1caf6bef6438

pom.xml

@@ -94,7 +94,7 @@
             reference-impl-sync workflow and deal with the subsequent
             PR.
         -->
-        <readonly-copilot-sdk-ref-impl-version-from-lastmerge-file-updated-by-reference-impl-sync>^1.0.40-0</readonly-copilot-sdk-ref-impl-version-from-lastmerge-file-updated-by-reference-impl-sync>
+        <readonly-copilot-sdk-ref-impl-version-from-lastmerge-file-updated-by-reference-impl-sync>^1.0.41-0</readonly-copilot-sdk-ref-impl-version-from-lastmerge-file-updated-by-reference-impl-sync>
 
     </properties>
 

scripts/codegen/package.json

@@ -7,7 +7,7 @@
     "generate:java": "tsx java.ts"
   },
   "dependencies": {
-    "@github/copilot": "^1.0.40-0",
+    "@github/copilot": "^1.0.41-0",
     "json-schema": "^0.4.0",
     "tsx": "^4.20.6"
   }