• Modify Tally Report API repository queries to return only primary records.
• Add WHERE is_primary = true filtering to applicable queries.
• Add feature flag so that we can make sure we can flip between old and new behavior in prod

AC

• Repository queries include is_primary = true filter where required.
• Only primary rows are returned by the Tally Report API.
• No regressions in existing API behavior.
• Queries execute successfully with expected performance.
• Feature flag added incase things go wrong and we have to flip switch