baseline: 批次A-D 成果 + membership 半成品（测试红）

backend/infra/scripts/run_dev.sh

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+#!/usr/bin/env bash
+# 开发环境启动脚本：SQLite + Granian + 自动重载
+set -euo pipefail
+
+# This script lives in backend/infra/scripts; manage.py lives in backend/.
+SCRIPT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
+cd "$SCRIPT_DIR/../.."
+
+export DJANGO_SETTINGS_MODULE=config.settings.dev
+
+echo "[dealerhub-dev] Running migrations..."
+python manage.py migrate --noinput
+
+echo "[dealerhub-dev] Starting Granian ASGI on 0.0.0.0:8000..."
+exec granian config.asgi:application \
+    --interface asgi \
+    --host 0.0.0.0 \
+    --port 8000 \
+    --reload \
+    --log-level info

backend/infra/scripts/run_prod_granian.sh

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+#!/usr/bin/env bash
+# 生产环境启动脚本：PostgreSQL + Granian (多 worker)
+# WORKDIR in Dockerfile = /app
+set -e
+cd /app
+
+export DJANGO_SETTINGS_MODULE=config.settings.prod
+
+echo "[dealerhub-prod] Running migrations..."
+python manage.py migrate --noinput
+
+echo "[dealerhub-prod] Collecting static files..."
+python manage.py collectstatic --noinput
+
+WORKERS="${GRANIAN_WORKERS:-4}"
+RUNTIME_THREADS="${GRANIAN_RUNTIME_THREADS:-1}"
+
+echo "[dealerhub-prod] Starting Granian ASGI (workers=$WORKERS, runtime-threads=$RUNTIME_THREADS)..."
+exec granian config.asgi:application \
+    --interface asgi \
+    --host 0.0.0.0 \
+    --port 8000 \
+    --workers "$WORKERS" \
+    --runtime-threads "$RUNTIME_THREADS" \
+    --log-level info