feat: CSV API extensions from the stress-test (light variants, loud guards, table properties, flat cosmology)

[Jammy2211]

Summary

CSV API extensions driven by an empirical stress-test against realistic user requirements (issue #490; user directive to make the canonical CSV API the single interface the Lenstool example teaches). The stress harness pushed .par-style dPIEMassLenstool rows, NFW redshift args, shear + PowerLaw sparse files, multipoles, PointFlux, flux/time-delay data columns and member catalogues through mass/light/point.csv + galaxy_table — most passed as-is; this PR fixes what didn't.

API Changes

Added: qualified light-variant class names in light.csv (linear.Sersic, operated.Gaussian, linear_operated.* — plain names stay standard); GalaxyTable.properties (extra catalogue columns load as float/string lists — nothing silently dropped) + galaxy_table_to_csv(properties=); dPIEMassLenstool(Sph) gain H0/Om0 float args (Planck15-value defaults, so a Lenstool run's cosmology is CSV-able) with prior-config entries. Behaviour changed (loud guards): duplicate (galaxy, attr_name) rows and typo'd parameter columns in model CSVs now raise ValueError (both previously silent — a typo left the profile at its default value). dPIEMassLenstool wrapper prior_count grows 9→11 (fix H0/Om0 for the old count).
See full details below.

Test Plan

• 12 new/updated unit tests (variant round-trips incl. qualified-name cells, both guards, table properties incl. legacy 3-column and string columns, Lenstool-row round-trip, H0/Om0 behaviour + count updates)
• Full PyAutoGalaxy suite (count in issue)
• Downstream: the Lenstool example rebuilt end-to-end on these APIs at identical 0.0680″ parity (companion PR)

Validation checklist (--auto run — in-session directive)

• Effective level: supervised; stress-test findings + design on feat: CSV API stress-test + extensions; port Lenstool example onto canonical mass/light/point.csv #490
• Human: happy with loud-guard behaviour change (typo'd columns now error)?
• Human: merge, amend, or reject — then log the outcome

Full API Changes

Added

• light.csv qualified profile_class cells for non-standard light namespaces: linear.<Name>, operated.<Name>, linear_operated.<Name>; writer derives the qualifier automatically.
• GalaxyTable.properties: Dict[str, List] — every extra CSV column, numeric → floats, else strings; galaxy_table_to_csv(..., properties={name: values}).
• dPIEMassLenstool.__init__(..., H0=67.66, Om0=0.30966) and dPIEMassLenstoolSph likewise (FlatLambdaCDM built from the flats; defaults reproduce prior behaviour to the massive-neutrino level); priors config entries for both.

Changed Behaviour

• galaxy_models_from_csv raises on columns no row's class consumes (typo guard).
• galaxies_from_csv_tables / galaxy_af_models_from_csv_tables raise on duplicate (galaxy, attr_name) pairs (previously silent overwrite).
• galaxy_table_from_csv no longer silently ignores extra columns (they load into properties).

Migration

• None expected for valid files; CSVs that relied on silently-ignored typo'd columns now fail loudly (that is the point).

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