Before: a scheduled post hitting a platform outage was marked Failed —
user had to manually retry. Now the job reschedules itself for 10
minutes later and the PostPlatform shows status "Retrying". Loops
indefinitely until the platform accepts the post.
- Adds PostPlatformStatus::Retrying (existing string column, no migration)
- PublishToSocialPlatform: PlatformUnavailable catch now calls
rescheduleForRetry() which (a) updates the row to Retrying with
retry_count + next_attempt_at in error_context, and (b) dispatches
itself with a 10-minute delay. updatePostStatus() naturally leaves
the parent Post in Publishing because Retrying is neither Published
nor Failed.
- Same treatment for the retry-refresh edge case (publisher throws
TokenExpired, refresh subsequently fails with PlatformUnavailable).
- i18n + frontend status config updated (en, pt-BR, es) for both
posts.status.retrying and posts.edit.status.retrying.
- Tests: 3 new tests covering the dispatched job, the edge case path,
and retry_count increment across attempts.
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