- Engine and ClaudeCodeProvider gates now activate whenever
Network or CSoup is importable, so the libsoup transport
actually wires up at runtime on Linux/Windows.
- Drop OpaquePointer detours; libsoup's typed pointers and
guint port/status arguments compile cleanly now.
- Replace the variadic soup_server_new(NULL) call with a tiny
shim — Swift's Clang importer marks variadics unavailable.
CSoup system library + libsoup-backed MCPServer impl behind
canImport(CSoup). Apple keeps Network framework. Same public
API; soup_server_message_pause/unpause carries the approval
await across the request boundary.