Report mothballed capacity

[tsmbland]

Description

Adds columns for mothballed_capacity and mothballed_units to asset_capacities.csv, allowing users to see information about capacity mothballing. Most example models have mothball_years = 0 (essentially mothballing is turned off), so this just adds columns full of zeros, but the simple_mothball has some real mothballing data in these columns.

Fixes #1461

Type of change

• Bug fix (non-breaking change to fix an issue)
• New feature (non-breaking change to add functionality)
• Refactoring (non-breaking, non-functional change to improve maintainability)
• Optimization (non-breaking change to speed up the code)
• Breaking change (whatever its nature)
• Documentation (improve or add documentation)

Key checklist

• All tests pass: $ cargo test
• The documentation builds and looks OK: $ cargo doc
• Update release notes for the latest release if this PR adds a new feature or fixes a bug
  present in the previous release

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.31%. Comparing base (b36dd9a) to head (6efdd05).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1506   +/-   ##
=======================================
  Coverage   90.30%   90.31%           
=======================================
  Files          60       60           
  Lines        8658     8663    +5     
  Branches     8658     8663    +5     
=======================================
+ Hits         7819     7824    +5     
  Misses        525      525           
  Partials      314      314           

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[Copilot]

Pull request overview

Adds mothballed capacity and unit counts to asset_capacities.csv, with schema, release-note, code, and regression fixture updates.

Changes:

• Calculates and outputs mothballing metrics.
• Updates the output schema and release notes.
• Refreshes regression fixtures, including non-zero mothballing data.

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/data/two_regions/asset_capacities.csv	Updated regression fixture.
tests/data/two_outputs/asset_capacities.csv	Updated regression fixture.
tests/data/simple/asset_capacities.csv	Updated regression fixture.
tests/data/simple_unit_size/asset_capacities.csv	Updated regression fixture.
tests/data/simple_shadow/asset_capacities.csv	Updated regression fixture.
tests/data/simple_npv/asset_capacities.csv	Updated regression fixture.
tests/data/simple_mothball/asset_capacities.csv	Updated fixture with mothballing data.
tests/data/simple_marginal/asset_capacities.csv	Updated regression fixture.
tests/data/simple_marginal_average/asset_capacities.csv	Updated regression fixture.
tests/data/simple_ironing_out/asset_capacities.csv	Updated regression fixture.
tests/data/simple_full/asset_capacities.csv	Updated regression fixture.
tests/data/muse1_default/asset_capacities.csv	Updated regression fixture.
tests/data/missing_commodity/asset_capacities.csv	Updated regression fixture.
tests/data/circularity/asset_capacities.csv	Updated regression fixture.
tests/data/circularity_npv/asset_capacities.csv	Updated regression fixture.
src/output.rs	Writes and tests the new CSV fields.
src/asset.rs	Calculates mothballed capacity and unit counts.
schemas/output/asset_capacities.yaml	Documents the new output columns.
docs/release_notes/upcoming.md	Records the output-format change.

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[dalonsoa]

I've a question, but otherwise the code looks good.

[dalonsoa]

So, in this example, the cases where there's mothballed capacity, the whole capacity is mothballed, right? There is no actual capacity not mothballed? Or does it means there is equal capacity mothballed and not?

[tsmbland]

Yes, in this case all capacity is mothballed