refactor(services): unify local model name matching with uniqueness and base-model guards (#1065)

Consolidate the duplicate name-matching logic into ModelScanner:
find_matching_models is now the single core, using each scanner's own
file_extensions for suffix stripping. get_model_info_by_name gains
require_unique/base_model kwargs while legacy route behavior is kept
byte-identical. reconnect_lora passes the recipe base model as a guard
and distinguishes ambiguous, base-model-mismatched, and missing LoRAs
in its error messages.

py/services/recipes/persistence_service.py

@@ -426,8 +426,21 @@ class RecipePersistenceService:
         if not recipe_path or not os.path.exists(recipe_path):
             raise RecipeNotFoundError("Recipe not found")
 
-        target_lora = await recipe_scanner.get_local_lora(target_name)
+        with open(recipe_path, "r", encoding="utf-8") as file_obj:
+            recipe_base_model = json.load(file_obj).get("base_model", "")
+
+        target_lora = await recipe_scanner.get_local_lora(target_name, recipe_base_model)
         if not target_lora:
+            matches = await recipe_scanner.find_local_loras_by_name(target_name)
+            if len(matches) > 1:
+                raise RecipeValidationError(
+                    f"Multiple local LoRAs match '{target_name}'; "
+                    "include the folder path to disambiguate"
+                )
+            if len(matches) == 1:
+                raise RecipeValidationError(
+                    f"Local LoRA '{target_name}' has a different base model than the recipe"
+                )
             raise RecipeNotFoundError(f"Local LoRA not found with name: {target_name}")
 
         recipe_data, updated_lora = await recipe_scanner.update_lora_entry(