Delete row 510 from branch

id 510
repo_id 121
name claude/k88-blocker-rollup
commit_id 26ef7b3a03c65d0bb90dae0420c6cd94a652971d
commit_message docs: add open-item and blocker rollups to the V1. ...
pusher_id 5
is_deleted 1
deleted_by_id 5
deleted_unix 1790984505
commit_time 1790952642
created_unix 1790952557
updated_unix 1790984505
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