runtime: Phase 2 ControlPort/Thrift integration
Add ControlPort/Thrift support as an alternative transport to XML-RPC:
New middleware:
- ThriftMiddleware wrapping GNURadioControlPortClient
New MCP tools:
- connect_controlport, disconnect_controlport
- get_knobs (with regex filtering), set_knobs (atomic)
- get_knob_properties (units, min/max, description)
- get_performance_counters (throughput, timing, buffers)
- post_message (PMT injection to block ports)
Docker support:
- enable_controlport param in launch_flowgraph
- ENABLE_CONTROLPORT env in entrypoint.sh
- ControlPort config generation in ~/.gnuradio/config.conf
Models: KnobModel, KnobPropertiesModel, PerfCounterModel,
ThriftConnectionInfoModel, plus ContainerModel updates.