Add partial message merge support for datastream entities#97
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Add partial message merge support for datastream entities#97
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Port the merge package from schematic-go (PR #140) to handle MessageType.PARTIAL updates. Instead of replacing cached entities wholesale, partial messages now merge only the fields present in the update: keys and credit_balances are dictionary-merged, metrics are upserted by (event_subtype, period, month_reset), and all other fields are replaced. Updates existing test that documented the old broken behavior to verify fields are now correctly preserved. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Port the merge package from schematic-go (PR #140) to handle
MessageType.PARTIAL updates. Instead of replacing cached entities
wholesale, partial messages now merge only the fields present in the
update: keys and credit_balances are dictionary-merged, metrics are
upserted by (event_subtype, period, month_reset), and all other fields
are replaced. Updates existing test that documented the old broken
behavior to verify fields are now correctly preserved.
Co-Authored-By: Claude Opus 4.6 (1M context) noreply@anthropic.com