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Adds CONEX-format output of the optical showers' longitudinal profiles (resolves #129), enabled by `nuspacesim run -c` or simulation.conex_output. * conex/format.py codifies the CONEX Header/Shower trees as fixed-shape NumPy structured dtypes. Every shower shares the fixed EAS node grid, so profile branches are fixed X[n_nodes] leaves -- no variable-length arrays. * conex/root_file.py writes those trees directly; no uproot/awkward dependency. Verified with ROOT 6.40 and uproot. * conex/writer.py maps profiles onto the format (Gaisser-Hillas fit, depths from ground, dE/dX) and provides ConexWriter. * compute() takes an on_shower_profile callable, forwarded through EAS and CphotAng as on_profile; it receives a fixed-shape ShowerProfile without changing any return value (serial and dask alike). No conditional branching in compute.py. lgE uses showerEnergy (the energy the profile was built with); geometry uses the beta the node grid was built with (clamped to >= 1 deg); showers whose maximum lies outside the visible window are skipped. Co-Authored-By: jorge <jcaracavalente@mines.edu> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Implements the conex output functionality onto a .root file. Includes a flag -c and a variable in the .toml file that can be assigned as True to run nuSpaceSim with conex output. A GH fit is made to the profile to obtain the GH parameters (works directly with Greisen, parameterized GH or fluctuated GH). Events with decay altitude >20km and Xmax outside the atmosphere (RN max is the last element) are rejected and not saved as output. Resolves #129