~anthropic/claude-sonnet-latest → B (65:35)

Side B fixes multiple real bugs (misattributed vote posts, silent fallback to unrelated items masking a data issue, dead UI element) and cleans up route naming across the codebase with corresponding test updates, representing broader functional correctness improvements. Side A is a smaller, well-tested but narrower fix that only addresses one specific import edge case (pinned Reddit posts).