fix: 调整路由顺序，修复静态文件被JWT拦截的问题

- 将 /static/{tail:.*} 路由移到受保护 scope 之前
- 确保静态文件无需认证即可访问

src/handlers/mod.rs

@@ -0,0 +1,26 @@
+// handlers 模块 - 按功能拆分路由处理器
+pub mod admin;
+pub mod auth;
+pub mod health;
+pub mod static_files;
+pub mod user;
+pub mod weather;
+
+// 编译时嵌入目录（供 handlers 使用）
+pub use include_dir::{Dir, include_dir};
+pub static STATIC_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR/static");
+pub static TEMPLATES_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR/templates");
+
+// re-export handlers for convenient use in main.rs
+pub use admin::admin_get_user;
+pub use admin::admin_update_user_payment;
+pub use auth::login;
+pub use health::health_check;
+pub use static_files::serve_static_files;
+pub use user::get_current_user_profile;
+pub use user::save_user_profile;
+pub use weather::delete_weather;
+pub use weather::generate_temp_token_handler;
+pub use weather::get_weather_brief;
+pub use weather::get_weather_details;
+pub use weather::post_weather_data;