feat: complete phase 02 RBAC and data scope recovery

backend/.env.example

@@ -0,0 +1,16 @@
+# 环境变体
+
+# 生产环境专属配置（不提交到 Git）
+# 复制 application-prod.yml.example 到 application-prod.yml 并填写真实值
+
+# 本地开发
+# DB_HOST=localhost
+# DB_PORT=5432
+# DB_NAME=danyang_match
+# DB_USER=postgres
+# DB_PASSWORD=replace-with-local-password
+# REDIS_HOST=localhost
+# REDIS_PORT=6379
+# MINIO_ENDPOINT=http://localhost:9000
+# MINIO_ACCESS_KEY=replace-with-local-access-key
+# MINIO_SECRET_KEY=replace-with-local-secret-key