feat: Codex 工作区改动迁移(支付管理/用户余额/创作页等)

将 Codex 在工作区累积的改动整体落到 refactor/rust-backend:
支付管理与用户余额页、各创作 surface、website 等。排除 boosapi.db/config.toml 等敏感文件。

Co-Authored-By: Claude <noreply@anthropic.com>

src/routes/comfyui/mod.rs

@@ -60,10 +60,9 @@ async fn check_auth(state: &AppState, headers: &HeaderMap) -> Result<(), AppErro
     // Downstream API key
     if auth.starts_with("sk-") {
         let proxy_token = state.runtime_proxy_token();
-        let result =
-            authorize_downstream_token(auth, &state.db, Some(&proxy_token))
-                .await
-                .map_err(AppError::Unauthorized)?;
+        let result = authorize_downstream_token(auth, &state.db, Some(&proxy_token))
+            .await
+            .map_err(AppError::Unauthorized)?;
 
         match result {
             DownstreamAuthResult::Managed { key, .. } => {
@@ -127,6 +126,8 @@ mod tests {
                     template_proxy_url: None,
                 },
                 comfyui: ComfyUIConfig::default(),
+                pixelle_video: Default::default(),
+                payment: Default::default(),
             },
             pool,
             BuiltinKeys {