fix(ci): B5 整合測試 DinD 修正 — 用 host bridge IP + published port

DinD 環境下 volume mount 和 compose 網路都不可靠：
- runner container 的路徑 ≠ host 路徑 (volume 失敗)
- compose 網路 IP 對 runner 不可路由

解法: host docker bridge (ip route default gateway) + postgres exposed port 15432
runner 直接用 /opt/api-venv/bin/pytest (host runner 上已安裝)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/cd.yaml

@@ -124,15 +124,24 @@ jobs:
           exit $PYTEST_EXIT
 
       # ── 整合測試 B5 (2026-04-10) ──────────────────────────────────────────
-      # pytest-runner service 在 compose 網路內跑，hostname=postgres-test 直連
-      # schema 由 postgres initdb.d 自動初始化，不依賴 host /opt/api-venv
+      # DinD 環境: runner 是 container，compose sibling 的 published port 綁在 host
+      # 用 host docker bridge IP (172.17.0.1) + exposed port 15432 連 postgres
       - name: Integration Tests (B5 — 真實 DB)
         run: |
           cd apps/api
-          docker compose -f docker-compose.test.yml --profile test up \
-            --abort-on-container-exit --exit-code-from pytest-runner
+          docker compose -f docker-compose.test.yml up -d --wait
+          # schema 初始化 (exec stdin 不需要 volume)
+          docker compose -f docker-compose.test.yml exec -T postgres-test \
+            psql -U awoooi -d awoooi_test \
+            < tests/integration/setup_test_schema.sql
+          # DinD: runner 連 sibling container 需走 host bridge → port 15432
+          # docker0 bridge IP 通常是 172.17.0.1，但用 route 確保準確
+          HOST_IP=$(ip route | awk '/default/{print $3}' | head -1)
+          echo "host bridge IP: $HOST_IP"
+          TEST_DATABASE_URL="postgresql+asyncpg://awoooi:awoooi_test_2026@${HOST_IP}:15432/awoooi_test?ssl=disable" \
+            /opt/api-venv/bin/pytest tests/integration/test_b5_core_flows.py -v --tb=short
           TEST_EXIT=$?
-          docker compose -f docker-compose.test.yml --profile test down -v 2>/dev/null || true
+          docker compose -f docker-compose.test.yml down -v 2>/dev/null || true
           exit $TEST_EXIT
 
       - name: Login to Harbor

apps/api/docker-compose.test.yml

@@ -17,9 +17,6 @@ services:
       POSTGRES_PASSWORD: awoooi_test_2026
     ports:
       - "15432:5432"
-    # 啟動時自動執行 setup_test_schema.sql (initdb.d 機制)
-    volumes:
-      - ./tests/integration/setup_test_schema.sql:/docker-entrypoint-initdb.d/01-schema.sql:ro
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U awoooi -d awoooi_test"]
       interval: 5s
@@ -40,6 +37,7 @@ services:
 
   # 2026-04-10 Claude Sonnet 4.6 Asia/Taipei: 整合測試 runner
   # 在 compose 網路內跑 pytest，hostname=postgres-test 直連，不依賴 host venv
+  # Schema 由 CD workflow 用 compose exec psql 初始化（避免 DinD volume 路徑問題）
   pytest-runner:
     image: python:3.11-slim
     working_dir: /workspace