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When a solution's git_important_files_hash differs from the exercise's but the actual git diff produces no interesting file changes, auto-sync the solution to the latest exercise version instead of returning a 400 error and reporting to Sentry. The frontend now gracefully handles the empty files case with an auto-updated notice. Closes #8456 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
dem4ron
approved these changes
Feb 11, 2026
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Closes #8456
Summary
RuntimeError: No files were found during solution diff)diff.files[0].relativePathContext
The
out_of_date?check (hash-based) and the actual git diff (content-based) can disagree — the hash changed but no interesting files actually changed. When this happens, the best action is to silently sync the solution since there are no meaningful changes for the user to review.Test plan
bundle exec rails test test/controllers/api/solutions_controller_test.rb)yarn test)🤖 Generated with Claude Code