Fix build task dependency for code generation

Changed from test task to assemble task to ensure code generation
runs before assembly rather than only before tests.

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

Co-Authored-By: Claude <[email protected]>

Author: nakamura-to

example-codegen-plugin/build.gradle.kts

@@ -87,8 +87,8 @@ tasks {
         dependsOn(cleanGeneratedSources)
     }
 
-    // Configure test task to generate all source files before running tests
-    test {
+    // Configure assemble task to generate all source files before running tests
+    assemble {
         dependsOn("domaCodeGenMysqlAll", "domaCodeGenPostgresqlAll")
     }
 }