diff --git a/apps/api/tests/integration/setup_test_schema.sql b/apps/api/tests/integration/setup_test_schema.sql
index 3f4495c0..8cc42765 100644
--- a/apps/api/tests/integration/setup_test_schema.sql
+++ b/apps/api/tests/integration/setup_test_schema.sql
@@ -77,6 +77,24 @@ CREATE TABLE IF NOT EXISTS approval_records (
     resolved_at TIMESTAMPTZ
 );
 
+-- 2026-04-27 P2.1 DecisionFusion 欄位（對齊 p2_decision_fusion_columns.sql 已上 production）
+-- IF NOT EXISTS 形式 idempotent，重跑安全
+ALTER TABLE approval_records
+    ADD COLUMN IF NOT EXISTS composite_score        REAL,
+    ADD COLUMN IF NOT EXISTS complexity_tier        VARCHAR(16),
+    ADD COLUMN IF NOT EXISTS decision_fusion_details JSONB;
+
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'chk_complexity_tier') THEN
+        ALTER TABLE approval_records
+            ADD CONSTRAINT chk_complexity_tier CHECK (
+                complexity_tier IS NULL
+                OR complexity_tier IN ('low','medium','high','critical')
+            );
+    END IF;
+END $$;
+
 CREATE TABLE IF NOT EXISTS knowledge_entries (
     id VARCHAR(36) PRIMARY KEY,
     title VARCHAR NOT NULL,