구조적인 부분 수정

docker/init-db.sql

@@ -180,5 +180,9 @@ CREATE INDEX IF NOT EXISTS idx_stock_analysis_stock_code ON stock_analysis(stock
 CREATE INDEX IF NOT EXISTS idx_stock_analysis_analysis_date ON stock_analysis(analysis_date);
 CREATE INDEX IF NOT EXISTS idx_stock_analysis_score_desc ON stock_analysis(score DESC);
 
+-- UPSERT (ON CONFLICT) 동작을 위한 unique constraint (batch_daily/intraday UPSERT 필수)
+ALTER TABLE stock_analysis
+    ADD CONSTRAINT uq_stock_analysis_code_date UNIQUE (stock_code, analysis_date);
+
 CREATE TRIGGER update_stock_analysis_updated_at BEFORE UPDATE ON stock_analysis
     FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();