feat(runtime): typed task packet format for structured claw dispatch

rust/crates/runtime/src/lib.rs

@@ -21,6 +21,7 @@ pub mod sandbox;
 mod session;
 mod sse;
 pub mod task_registry;
+pub mod task_packet;
 pub mod team_cron_registry;
 mod usage;
 pub mod worker_boot;
@@ -100,6 +101,11 @@ pub use session::{
     SessionFork,
 };
 pub use sse::{IncrementalSseParser, SseEvent};
+pub use task_packet::{
+    validate_packet, AcceptanceTest, BranchPolicy, CommitPolicy, EscalationPolicy, GreenLevel,
+    RepoConfig, ReportingContract, TaskPacket, TaskPacketValidationError, TaskScope,
+    ValidatedPacket,
+};
 pub use worker_boot::{
     Worker, WorkerEvent, WorkerEventKind, WorkerFailure, WorkerFailureKind, WorkerReadySnapshot,
     WorkerRegistry, WorkerStatus,