- Add native_queue.go with CGO bindings for queue operations
- Add native_queue_stub.go for non-CGO builds
- Add hash_selector to choose between Go and native implementations
- Add native_bridge_libs.go for CGO builds with native_libs tag
- Add native_bridge_nocgo.go stub for non-CGO builds
- Update queue errors and task handling for native integration
- Update worker config and runloop for native library support
