feat(infra/llm): Gemini client with stream + count_tokens via google.golang.org/genai

go.mod

@@ -15,6 +15,9 @@ require (
 )
 
 require (
+	cloud.google.com/go v0.121.6 // indirect
+	cloud.google.com/go/auth v0.16.4 // indirect
+	cloud.google.com/go/compute/metadata v0.8.0 // indirect
 	dario.cat/mergo v1.0.2 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
@@ -40,6 +43,11 @@ require (
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/s2a-go v0.1.9 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
+	github.com/googleapis/gax-go/v2 v2.15.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/invopop/jsonschema v0.13.0 // indirect
 	github.com/jackc/pgerrcode v0.0.0-20250907135507-afb5586c32a6 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
@@ -90,8 +98,13 @@ require (
 	go.opentelemetry.io/otel/trace v1.41.0 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/net v0.49.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.42.0 // indirect
 	golang.org/x/text v0.34.0 // indirect
+	google.golang.org/genai v1.55.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250818200422-3122310a409c // indirect
+	google.golang.org/grpc v1.74.2 // indirect
+	google.golang.org/protobuf v1.36.7 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )