update api export for executive and fixing closing cycle flow

backend/database/erd_schema.sql

@@ -195,6 +195,8 @@ CREATE TABLE IF NOT EXISTS ai_insight (
 
 CREATE INDEX IF NOT EXISTS idx_ai_insight_cycle_id ON ai_insight (cycle_id);
 CREATE INDEX IF NOT EXISTS idx_ai_insight_date ON ai_insight (date);
+CREATE UNIQUE INDEX IF NOT EXISTS uniq_ai_insight_cycle_date_section_session
+    ON ai_insight (cycle_id, date, section, session);
 
 -- -----------------------------------------------------------------------------
 -- 8. Feed Sacks