fix(ci): B5 簡化網路方案 — 直接用 container IP 不做 network connect

network connect 需要 runner container name 不可靠
Gitea runner 在 docker 內本來就能直連同主機 container IP
用 docker inspect 取 IP 直連即可

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

.gitea/workflows/cd.yaml

@@ -133,24 +133,14 @@ jobs:
           docker compose -f docker-compose.test.yml exec -T postgres-test \
             psql -U awoooi -d awoooi_test \
             -f /dev/stdin < tests/integration/setup_test_schema.sql
-          # Runner 在 Docker 容器內，需加入 compose 網路才能連到 postgres-test
-          # compose 預設網路名: {project_name}_default，project = 目錄名 = api
-          COMPOSE_NETWORK=$(docker network ls --filter name=api --format '{{.Name}}' | grep default | head -1)
-          RUNNER_CONTAINER=$(hostname)
-          echo "compose network: $COMPOSE_NETWORK, runner: $RUNNER_CONTAINER"
-          if [ -n "$COMPOSE_NETWORK" ]; then
-            docker network connect "$COMPOSE_NETWORK" "$RUNNER_CONTAINER" 2>/dev/null || true
-          fi
-          # 取 postgres container IP (compose 網路內)
+          # 取 postgres container IP — runner 在 docker 內可直連 container IP
           CONTAINER_NAME=$(docker ps --filter name=postgres-test --format '{{.Names}}' | head -1)
           PG_IP=$(docker inspect "$CONTAINER_NAME" \
-            --format '{{json .NetworkSettings.Networks}}' \
-            | python3 -c "import sys,json; nets=json.load(sys.stdin); print(list(nets.values())[0]['IPAddress'])" 2>/dev/null)
+            --format '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' | awk '{print $1}')
           echo "postgres-test: $CONTAINER_NAME @ $PG_IP:5432"
           TEST_DATABASE_URL="postgresql+asyncpg://awoooi:awoooi_test_2026@${PG_IP}:5432/awoooi_test?ssl=disable" \
             /opt/api-venv/bin/pytest tests/integration/test_b5_core_flows.py -v --tb=short
           TEST_EXIT=$?
-          docker network disconnect "$COMPOSE_NETWORK" "$RUNNER_CONTAINER" 2>/dev/null || true
           docker compose -f docker-compose.test.yml down -v 2>/dev/null || true
           exit $TEST_EXIT