The wiki integrity check failed when the Gitea API was temporarily
unavailable after a batch of wiki page updates. list_wiki_pages caught
APIError and returned {}, causing all pages to be reported as missing
and empty — even though the sync itself succeeded.
Fix: list_wiki_pages now raises APIError instead of swallowing it.
verify_wiki_integrity uses tenacity (same pattern as api_clients) for
exponential backoff retry on the page list. If retries are exhausted,
it returns no failures with a warning, since the sync already succeeded
and a transient API outage should not fail the job. The --verify path
in main() also uses the retry wrapper and skips gracefully on failure.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>