Kotlin/JVM GDK smoke test

This is a small downstream Kotlin/JVM app that consumes the Maven artifact io.github.aaif-goose:gdk from mavenLocal().

From the repository root, first build and publish the Maven artifact locally:

source bin/activate-hermit
just --justfile crates/goose-sdk/justfile maven-package

Then run the smoke test:

cd crates/goose-sdk/examples/uniffi/kotlin
gradle --no-daemon run

Set DATABRICKS_HOST and DATABRICKS_TOKEN before running the example. DATABRICKS_HOST should be the Databricks workspace URL, for example https://dbc-xxxxxxxx-xxxx.cloud.databricks.com. The example uses the native GDK DatabricksProvider, not the declarative JSON provider. The expected output is a streamed completion from Databricks followed by optional usage metadata. The important failure to watch for is UnsatisfiedLinkError or a missing native library resource, which would mean the bundled native library was not loaded correctly.

The example sets --enable-native-access=ALL-UNNAMED because JNA loads the bundled Goose native library. Newer JDKs warn when native access is not enabled explicitly, and future JDKs may require it.