feat(server): 统一配置文件管理并增强环境变量配置

- 将服务器配置文件合并到根目录的 .env.example 中，移除 server/.env.example
- 为 PostgreSQL、Redis、MinIO/S3、Server、前端构建和Nginx 配置添加详细注释
- 新增 S3_REGION、S3_PUBLIC_URL 和 SENTRY_DSN 环境变量配置
- 修改配置加载逻辑以正确读取根目录下的 .env 文件
- 更新 docker-compose.yml 以包含新增的环境变量

server/.env.example

@@ -1,22 +0,0 @@
-DATABASE_URL=postgresql+asyncpg://postgres:postgres@localhost:5432/ciyuan_viewfinder
-DATABASE_URL_SYNC=postgresql://postgres:postgres@localhost:5432/ciyuan_viewfinder
-REDIS_URL=redis://localhost:6379/0
-SECRET_KEY=change-me-to-a-random-secret-key
-ACCESS_TOKEN_EXPIRE_MINUTES=30
-REFRESH_TOKEN_EXPIRE_DAYS=7
-
-# Storage: "local" or "s3" (s3 compatible with MinIO/OSS/COS)
-STORAGE_BACKEND=local
-LOCAL_STORAGE_PATH=./uploads
-
-S3_ENDPOINT=http://localhost:9000
-S3_ACCESS_KEY=minioadmin
-S3_SECRET_KEY=minioadmin
-S3_BUCKET=ciyuan-viewfinder
-S3_REGION=
-S3_PUBLIC_URL=
-
-# Tencent Maps API Key (apply at https://lbs.qq.com/)
-TENCENT_MAP_KEY=
-
-SENTRY_DSN=

server/app/core/config.py

@@ -1,6 +1,16 @@
+from pathlib import Path
+
 from pydantic_settings import BaseSettings
 
 
+_config_path = Path(__file__).resolve()
+_env_file = (
+    _config_path.parents[3] / ".env"
+    if _config_path.parents[2].name == "server"
+    else _config_path.parents[2] / ".env"
+)
+
+
 class Settings(BaseSettings):
     DATABASE_URL: str
     DATABASE_URL_SYNC: str
@@ -25,7 +35,7 @@ class Settings(BaseSettings):
     LOG_LEVEL: str = "INFO"
 
     class Config:
-        env_file = ".env"
+        env_file = _env_file
 
 
 settings = Settings()