Rework the fact-checker editorial role prompt so it stops commenting on
correct facts and only flags problems (errors, doubtful, unverifiable).
- Add the directive "don't write/comment that a fact is right or confirmed:
your job is to find errors, not confirm facts" to both RU and EN bundles.
- Remove the [Подтверждено]/[Verified] verdict; reframe the verdict list as
"for problem claims only".
- Reword the role description (no longer "confirms") and the
comment-on-every-claim rule to "problem claims only".
- Bump fact-checker role version 2 -> 3 and refresh the content-hash lock.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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