[AI] fix some modules, develop the big part of modules. TODO fix critical errors, update pipeline, test everything

src/error.rs

@@ -24,8 +24,8 @@ pub enum AppError {
     NotFound(String),
     #[error("Business Logic: {0}")]
     BusinessLogic(String),
-    #[error("Internal Server Error")]
-    Internal,
+    #[error("Internal Server Error: {0}")]
+    Internal(String),
 }
 
 impl IntoResponse for AppError {
@@ -39,7 +39,8 @@ impl IntoResponse for AppError {
             AppError::Unauthorized(_) => "unauthorized",
             AppError::NotFound(_) => "not_found",
             AppError::BusinessLogic(_) => "business_logic",
-            AppError::Internal => "internal",
+            // FIX: Add `(_)` to ignore the inner string when just grabbing the type
+            AppError::Internal(_) => "internal",
         };
 
         // Метрики остаются как были
@@ -55,7 +56,6 @@ impl IntoResponse for AppError {
                 (StatusCode::CONFLICT, "Trial already used".to_string())
             }
             AppError::Database(e) => {
-                // Логируем саму ошибку базы как отдельное поле для поиска
                 error!(error_type, db_error = ?e, "Database execution failure");
                 (
                     StatusCode::INTERNAL_SERVER_ERROR,
@@ -88,11 +88,12 @@ impl IntoResponse for AppError {
                 warn!(error_type, details = %msg, "Business logic violation");
                 (StatusCode::BAD_REQUEST, msg.clone())
             }
-            AppError::Internal => {
-                error!(error_type, "Critical internal failure");
+            // FIX: Bind the inner string to `msg` and log it!
+            AppError::Internal(msg) => {
+                error!(error_type, details = %msg, "Critical internal failure");
                 (
                     StatusCode::INTERNAL_SERVER_ERROR,
-                    "Critical failure".to_string(),
+                    "Critical failure".to_string(), // We keep the user-facing message safe/generic
                 )
             }
         };