Aj/bulk micro options part2

[trontrytel]

Refactor 1-moment microphysics process options

Summary

This PR refactors how individual microphysical processes are enabled and disabled in the 1-moment scheme. Every process now has an explicit No* option that returns zero tendency, and each process is addressed individually via option dispatch. Accretion processes are added to the options struct for the first time. The VarTimescaleAcnv option has been moved from CM2 to CM1 module and its parameters are consolidated into the 1M parameter tree. All callers — bulk tendencies, tests, docs — are updated.

Changes

src/parameters/Microphysics1MOptions.jl

• Added No* option singletons for every process so each one can be individually disabled: NoCloudLiquidFormation, NoCloudIceFormation, NoRainAutoconversion, NoSnowAutoconversion, NoRainCondensationEvaporation, NoSnowDepositionSublimation, NoSnowMelt, and one for each accretion pair.
• Renamed options for clarity and consistency:
  • CloudIceMeltToLiquid → CloudIceMelt
  • LiquidAutoconv1M → RainAutoconversion1M
  • LiquidAutoconv2M → RainAutoconversionPrescribedNd
  • SnowAutoconvNoSupersat/WithSupersat → SnowAutoconversionNoSupersaturation/WithSupersaturation
  • EvaporationOnly → RainEvaporation
  • SublimationOnly → SnowSublimation
  • DepositionSublimation → SnowDepositionSublimation
  • Field rain_evaporation → rain_condensation_evaporation
  • Field snow_sublimation → snow_deposition_sublimation
  • Field cloud_liquid_autoconversion → rain_autoconversion
• Added accretion processes to Microphysics1MOptions: CloudLiquidRainAccretion, CloudLiquidSnowAccretion, CloudIceRainAccretion, CloudIceSnowAccretion, RainSnowAccretion (each with a corresponding No* variant).
• Removed RainIceAccretion (previously an undifferentiated accretion flag).

src/parameters/Microphysics1MParams.jl

• Removed the top-level prescribed_Nc field; droplet number concentration is now stored inside VarTimescaleAcnv.Nc.
• Removed the FT type parameter from Microphysics1MParams.

src/parameters/Microphysics1M.jl

• Added VarTimescaleAcnv export and definition (moved from Microphysics2M.jl). It now holds τ, α, and Nc as a single struct.

src/parameters/Microphysics2M.jl

• Removed VarTimescaleAcnv struct, constructor, and export (moved to Microphysics1M.jl).

src/Microphysics1M.jl

• Converted conv_q_lcl_to_q_rai from a direct Acnv1M-struct-based call to option dispatch: conv_q_lcl_to_q_rai(::NoRainAutoconversion | ::RainAutoconversion1M | ::RainAutoconversionPrescribedNd, mp, tps, micro, thermo).
• Converted accretion wrappers to option dispatch for all four cloud-precip pairs (CloudLiquidRainAccretion, CloudLiquidSnowAccretion, CloudIceRainAccretion, CloudIceSnowAccretion).
• Added high-level accretion_snow_rain(::NoRainSnowAccretion | ::RainSnowAccretion, mp, tps, micro, thermo) that calls both the cold and warm collision arms and returns (; S_rai_sno, S_sno_rai, S_melt).
• Removed the accretion_rain_sink public docstring (it is now an internal-only low-level kernel).

src/BulkMicrophysicsTendencies.jl

• Updated the 1M tendency function to dispatch on all new accretion options from Microphysics1MOptions, passing the full mp struct through to each process wrapper.

[codecov]

Codecov Report

❌ Patch coverage is 96.12403% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.24%. Comparing base (5dd0a90) to head (0f0343e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #717      +/-   ##
==========================================
+ Coverage   92.19%   92.24%   +0.05%     
==========================================
  Files          55       55              
  Lines        2420     2450      +30     
==========================================
+ Hits         2231     2260      +29     
- Misses        189      190       +1     

Components	Coverage Δ
src	93.16% <96.12%> (+0.04%)	⬆️
ext	69.47% <ø> (ø)

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[sajjadazimi]

Thank you!

[sajjadazimi]

These define different processes. Maybe renaming them to what converts to what is useful. For example accretion_ice_snow, accretion_ice_rain, accretion_liquid_rain. This also helps avoid the confusion that what processes must be chosen by a non-expert user.

[haakon-e]

My concerns from #714 remain, but if I view this PR within the framework adopted by the previous PR, I think the changes look good!