FACTUAL ACTIVITY RECORD · An activity record based on work that took place
Building local synchronization for Codex Thread trees
Reading Threads, Turns, and publishable Messages from selected roots with idempotent ingest and retry
Purpose
Later administration and public views needed to grow from actual synchronized Codex conversation structure rather than an assumed workspace model. Synchronization had to stay within selected root sessions and store only displayable conversation without gaps or duplicates.
Implementation
database migration added devices, environments, receipts, Threads, Turns, and Messages. api.connector_ingest_v1 validates device identity, idempotency keys, FIFO order, and payload consistency before committing ingest in one transaction.
Read-only App Server access, Thread reading, and normalization were added under synchronization service, extracting only publishable user and agent Messages. Payloads are persisted in a SQLite outbox before delivery and retried from the head by the sync-root path.
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What was confirmed
Verification results
Fixtures, database contracts, and unit tests covered root, child, and grandchild structure, idempotency, ordering, retry, and atomic failure.
Real data synchronization from two selected roots produced two Threads, ten Turns, and 39 Messages, with no unexpected session or dummy conversation present.
Those roots had no child or grandchild, so parent-child behavior was not observed in real data and remained verified only by fixtures and tests.
Basis for completion
Completion required read-only retrieval of selected roots and idempotent, retryable storage of publishable Messages in the local database.