refactor: rename llm worker crate to engine

crates/llm-engine/tests/gemini_fixtures.rs

@@ -0,0 +1,23 @@
+//! Gemini fixture-based integration tests
+
+mod common;
+
+#[test]
+fn test_fixture_events_deserialize() {
+    common::assert_events_deserialize("gemini");
+}
+
+#[test]
+fn test_fixture_event_sequence() {
+    common::assert_event_sequence("gemini");
+}
+
+#[test]
+fn test_fixture_usage_tokens() {
+    common::assert_usage_tokens("gemini");
+}
+
+#[test]
+fn test_fixture_with_timeline() {
+    common::assert_timeline_integration("gemini");
+}