fix(training): use string interpolation to satisfy CA1305

[JerrettDavis]

Fixes CA1305 build error introduced by the Ollama handlers commit.

discrepancies.Count.ToString() → $"{discrepancies.Count}" avoids locale-sensitive int format warning-as-error.

[github-actions]

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Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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[github-actions]

Code Coverage

Summary
  Generated on: 04/27/2026 - 00:32:47
  Coverage date: 04/27/2026 - 00:30:51 - 04/27/2026 - 00:32:39
  Parser: MultiReport (7x Cobertura)
  Assemblies: 23
  Classes: 1067
  Files: 591
  Line coverage: 74.7%
  Covered lines: 36860
  Uncovered lines: 12452
  Coverable lines: 49312
  Total lines: 97270
  Branch coverage: 63.4% (14288 of 22512)
  Covered branches: 14288
  Total branches: 22512
  Method coverage: 86.3% (6314 of 7308)
  Full method coverage: 74.1% (5421 of 7308)
  Covered methods: 6314
  Fully covered methods: 5421
  Total methods: 7308