Improve translation consistency with temperature=0 and diff-aware updates#860
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ewels merged 2 commits intonextflow-io:masterfrom Feb 9, 2026
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Reduces non-deterministic variation in translations by setting temperature=0 for Claude API calls. This produces more consistent, literal translations which is appropriate for technical documentation.
When English source content changes (not prompt changes), the system now: 1. Computes the git diff of what changed in the English file 2. Includes the diff in the prompt with explicit instructions to: - Update ONLY sections corresponding to the changes - Preserve all other content exactly as-is - Allow fixing major issues (truncation, missing sections) if found This reduces unnecessary rephrasing of translations that are already correct, resulting in smaller, more focused diffs in translation PRs. The diff-aware mode is skipped when: - Prompt files changed (full re-translation needed) - Diff is >20% of file lines (too large for incremental approach) - No existing translation exists (new file) Also adds 'prompt_changed' field to TranslationFile to distinguish between prompt-triggered and content-triggered updates.
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Summary
This PR improves translation consistency by making two changes to
_scripts/translate.py:temperature=0for Claude API calls - reduces non-deterministic variation in translationsWhy
Previously, even tiny changes (like fixing a typo) could result in large translation diffs because:
How It Works
The incremental update prompt explicitly tells Claude:
Changes
temperature=0to_call_claude_once()and_call_claude_once_async()get_file_diff()function with 20% thresholdprompt_changedfield toTranslationFiledataclassbuild_translation_prompt()withen_diffparameter