feat: complete user login admin keys and deployment docs

src/config.rs

@@ -93,9 +93,13 @@ impl ComfyUIConfig {
 
 impl AppConfig {
     pub fn load() -> anyhow::Result<Self> {
+        Self::load_from_file("config.toml")
+    }
+
+    pub fn load_from_file(path: &str) -> anyhow::Result<Self> {
         dotenvy::dotenv().ok();
         Ok(Figment::new()
-            .merge(Toml::file("config.toml"))
+            .merge(Toml::file(path))
             .merge(Env::prefixed("BOOSAPI_").split("__"))
             .extract()?)
     }