feat: add streaming core domain model

crates/crank-core/src/lib.rs

@@ -6,6 +6,8 @@ pub mod observability;
 pub mod operation;
 pub mod protocol;
 pub mod secret;
+pub mod stream_session;
+pub mod streaming;
 pub mod workspace;
 
 pub use access::{
@@ -18,8 +20,9 @@ pub use auth::{
     BearerAuthConfig, SecretRef,
 };
 pub use ids::{
-    AgentId, AuthProfileId, DescriptorId, InvitationId, InvocationLogId, OperationId,
-    PlatformApiKeyId, SampleId, SecretId, ToolId, UserId, UserSessionId, WorkspaceId,
+    AgentId, AsyncJobId, AuthProfileId, DescriptorId, InvitationId, InvocationLogId, OperationId,
+    PlatformApiKeyId, SampleId, SecretId, StreamSessionId, ToolId, UserId, UserSessionId,
+    WorkspaceId,
 };
 pub use observability::{
     InvocationLevel, InvocationLog, InvocationSource, InvocationStatus, UsagePeriod, UsageRollup,
@@ -31,4 +34,9 @@ pub use operation::{
 };
 pub use protocol::{AuthKind, ExportMode, GraphqlOperationType, HttpMethod, Protocol};
 pub use secret::{Secret, SecretKind, SecretStatus, SecretVersion};
+pub use stream_session::{AsyncJobHandle, JobStatus, StreamSession, StreamStatus};
+pub use streaming::{
+    AggregationMode, ExecutionMode, StreamingConfig, StreamingConfigError, ToolFamilyConfig,
+    TransportBehavior,
+};
 pub use workspace::{Workspace, WorkspaceStatus};