BOT: Fix #922: Remove check_columns_present and test_columns_present

[nikosbosse]

Summary

• Replaces all 10 call sites of check_columns_present() and 1 call site of test_columns_present() with equivalent checkmate functions (assert_subset, check_subset, test_subset)
• Deletes both internal functions and their man pages
• Updates test expectations to match checkmate's error message format

Fixes #922

Root cause

check_columns_present() and test_columns_present() are custom internal functions that duplicate functionality already provided by checkmate::check_subset() / checkmate::test_subset() / checkmate::assert_subset(), which is already a package dependency.

What was changed

• R/check-input-helpers.R — Deleted check_columns_present() and test_columns_present() function definitions
• R/class-forecast.R — assert(check_columns_present(...)) → assert_subset(...), test_columns_present(...) → test_subset(...)
• R/class-forecast-sample.R — assert(check_columns_present(...)) → assert_subset(...)
• R/class-forecast-quantile.R — assert(check_columns_present(...)) → assert_subset(...)
• R/class-forecast-nominal.R — assert(check_columns_present(...)) → assert_subset(...)
• R/class-forecast-ordinal.R — assert(check_columns_present(...)) → assert_subset(...)
• R/class-forecast-multivariate-sample.R — assert(check_columns_present(...)) → assert_subset(...)
• R/pairwise-comparisons.R — assert(check_columns_present(...)) → assert_subset(...), check_columns_present(...) → check_subset(...)
• R/plot-wis.R — assert(check_columns_present(...)) → assert_subset(...)
• R/get-correlations.R — check_columns_present(...) → check_subset(...)
• man/ — Deleted check_columns_present.Rd and test_columns_present.Rd
• tests/ — Removed tests for deleted functions; updated error message expectations in 5 test files

Test plan

• All 672 existing tests pass
• R CMD check: 0 errors, 0 warnings, 2 notes (pre-existing)

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.80%. Comparing base (ac0c01a) to head (89e1e6e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1080      +/-   ##
==========================================
- Coverage   97.83%   97.80%   -0.03%     
==========================================
  Files          35       35              
  Lines        1845     1826      -19     
==========================================
- Hits         1805     1786      -19     
  Misses         40       40              

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[nikosbosse]

CLAUDE: Clean, well-scoped removal of check_columns_present and test_columns_present, replaced by equivalent checkmate functions (check_subset, assert_subset, test_subset). All 11 call sites correctly handle argument order reversal and preserve identical runtime semantics. All 672 tests pass. No issues found. Verdict: approve.