feat: 更新环境配置和错误处理逻辑

- 更新后端端口号和环境配置，添加Redis支持
- 改进错误处理，添加带消息的未授权和禁止访问错误
- 优化前端登录流程和错误提示
- 更新前端页面标题和欢迎信息
- 清理未使用的代码模块

backend/src/main.rs

@@ -7,7 +7,7 @@ pub mod models;
 pub mod services;
 pub mod routes;
 pub mod utils;
-pub mod workflow;
+//pub mod workflow;
 
 use axum::Router;
 use axum::http::{HeaderValue, Method};
@@ -17,12 +17,12 @@ use axum::middleware;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    // 增强：支持通过 ENV_FILE 指定要加载的环境文件
+    // 增强：支持通过 ENV_FILE 指定要加载的环境文件，并记录实际加载的文件
     // - ENV_FILE=prod 或 production => .env.prod
     // - ENV_FILE=dev 或 development => .env
     // - ENV_FILE=staging => .env.staging
     // - ENV_FILE=任意字符串 => 视为显式文件名或路径
-    if let Ok(v) = std::env::var("ENV_FILE") {
+    let env_file_used: Option<String> = if let Ok(v) = std::env::var("ENV_FILE") {
         let filename = match v.trim() {
             "" => ".env".to_string(),
             "prod" | "production" => ".env.prod".to_string(),
@@ -30,10 +30,16 @@ async fn main() -> anyhow::Result<()> {
             "staging" | "pre" | "preprod" | "pre-production" => ".env.staging".to_string(),
             other => other.to_string(),
         };
-        dotenvy::from_filename(&filename).ok();
+        match dotenvy::from_filename_override(&filename) {
+            Ok(_) => Some(filename),
+            Err(_) => Some(format!("{} (not found)", filename)),
+        }
     } else {
-        dotenvy::dotenv().ok();
-    }
+        match dotenvy::dotenv_override() {
+            Ok(path) => Some(path.to_string_lossy().to_string()),
+            Err(_) => None,
+        }
+    };
 
     tracing_subscriber::fmt().with_env_filter(tracing_subscriber::EnvFilter::from_default_env()).init();
 
@@ -91,7 +97,13 @@ async fn main() -> anyhow::Result<()> {
         .layer(cors)
         .layer(middleware::from_fn_with_state(db.clone(), middlewares::logging::request_logger));
 
-    let addr = format!("{}:{}", std::env::var("APP_HOST").unwrap_or("0.0.0.0".into()), std::env::var("APP_PORT").unwrap_or("8080".into()));
+    // 读取并记录最终使用的主机与端口（默认端口改为 9898）
+    let app_host = std::env::var("APP_HOST").unwrap_or("0.0.0.0".into());
+    let app_port = std::env::var("APP_PORT").unwrap_or("9898".into());
+    if let Some(f) = &env_file_used { tracing::info!("env file loaded: {}", f); } else { tracing::info!("env file loaded: <none>"); }
+    tracing::info!("resolved APP_HOST={} APP_PORT={}", app_host, app_port);
+
+    let addr = format!("{}:{}", app_host, app_port);
     tracing::info!("listening on {}", addr);
     axum::serve(tokio::net::TcpListener::bind(addr).await?, app).await?;
     Ok(())