Release v4.10.0

What's Changed

• docs(training): update documentation regarding training extra by @ognis1205 in #581
• Remove multi turn agent mode by @lukehinds in #584
• build(deps): bump transformers from 5.0.0rc2 to 5.0.0rc3 by @dependabot[bot] in #582
• chore: add GitHub issue and PR templates by @ognis1205 in #564
• feat: add auto and percentage-based num_samples configuration by @scp7 in #585
• Feature checkpointing v2 by @scp7 in #589
• build(deps): bump actions/setup-python from 6.1.0 to 6.2.0 by @dependabot[bot] in #587
• build(deps): bump actions/checkout from 6.0.1 to 6.0.2 by @dependabot[bot] in #588
• feat: checkpoint improvements - XDG paths, graceful stop, and UX enhancements by @scp7 in #590

Full Changelog: v4.9.0...v4.10.0