Analysis Entry Point

The maintained analysis guide now lives in the dedicated Analysis section. It covers snapshot conventions, halo catalogs, shared Python utilities, dust distributions, radial profiles, extinction/\(R_V\), conservation diagnostics, and SKIRT exports.

Run scripts from scripts/ unless their --help text states otherwise, so halo_utils.py, zoom_halo_utils.py, and cosmicgrain.mplstyle resolve consistently.