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Waleed
ce32993c76
* fix(knowledge): fix chunk_index race and storage-quota check/increment race - createChunk now serializes concurrent writes to the same document via a transactional advisory lock before computing the next chunk_index, fixing the unique-constraint collision behind the ITSM 'Failed to create chunk' incident (two overlapping workflow runs appending to the same shared KB document). - Document uploads now check and increment storage quota atomically in a single conditional UPDATE inside the insert transaction, instead of check-then-insert-then-increment-after-commit, closing the window where two concurrent uploads could both pass the quota check and over-commit storage. * fix(knowledge): bound the chunk advisory-lock wait with lock_timeout Address Greptile P1: the advisory lock in createChunk could wait indefinitely on a stalled same-document transaction while holding a pooled connection. Set a 5s lock_timeout before acquiring it, matching the set_config + pg_advisory_xact_lock pattern already used by every other advisory lock in this codebase (org membership, table schema/row-ordering, BYOK keys, workspace env, usage-log flush, execution-log reconciliation).