docs(firestore-bigquery-export): document failure handling and recovery - #3131
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This pull request updates the documentation in README.md to reflect the introduction of the syncBigQuery Cloud Tasks queue for buffering and retrying failed BigQuery writes. It details the new configuration parameters, IAM roles, failure handling behavior, and API surface changes. The feedback suggests a minor wording improvement in the failure handling section to clarify that a row is dropped along with the task if no backup collection is configured.
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Adds the failure handling section: the sync queue, recovering parked rows from BACKUP_COLLECTION, known limits, and the new params.
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Last layer of the Cloud Tasks write buffer stack. README only.
Adds a "Failure handling" section describing the sync queue, how to recover rows parked in
BACKUP_COLLECTIONback into BigQuery, and the known limits that have not been verified live. Adds the two new params to the settings table,syncBigQueryto the list of functions to re-export,roles/cloudtasks.enqueuerto the roles list, and updates the differences section so failed writes are described as the same buffer the extension has rather than a trigger retry.Part of #3031.