concore status and stop ignore C++, Java, Verilog and MATLAB nodes #615

concore status and concore stop only pick up Python nodes. C++, Java, Verilog and MATLAB nodes are never listed, and concore stop leaves them running.

Since #581, a process only counts if its cwd has concore.iport plus concore.py or concoredocker.py (_process_match.py line 13). But mkconcore only copies concore.py into Python node folders. C++ nodes get concore.hpp, Java gets concore.java, etc. (mkconcore.py around line 1121), so their folders never match.

Repro:

1. Build and run a study with one Python node and one C++ node
2. Run concore status

Expected: both nodes listed, and concore stop kills both.

Actual: only the Python node shows up. The C++ node keeps running after concore stop.

Checked with two node folders that both have concore.iport, one with concore.py and one with concore.hpp. is_concore_process() returns True for the first and False for the second.

Tested on dev at 8e0913e, Python 3.12.10