Add typed generation preferences

src/schema.rs

@@ -12,6 +12,14 @@ diesel::table! {
         selected_model -> Text,
         dspark_enabled -> Bool,
         idle_timeout_minutes -> Integer,
+        context_tokens -> Integer,
+        max_generated_tokens -> Integer,
+        system_prompt -> Text,
+        temperature -> Nullable<Float>,
+        top_p -> Nullable<Float>,
+        min_p -> Nullable<Float>,
+        seed -> Nullable<Text>,
+        reasoning_mode -> Text,
     }
 }