feat(recipes): add location open and recipe ID copy to recipe modal

Add a de-emphasized meta footer to the recipe modal, mirroring the model
modal's hash footnote: a clickable file location on the left (opens the
recipe JSON via the generic open-file-location route, with the Docker
clipboard fallback) and a middle-truncated recipe ID with copy button on
the right.

The recipe detail API now exposes recipe_json_path so the frontend does
not have to guess the on-disk storage layout. Translations for the new
recipes.modal.* keys are filled in for all 9 locales, reusing the model
modal's openFileLocation wording per locale.

py/routes/handlers/recipe_handlers.py

@@ -353,6 +353,17 @@ class RecipeListingHandler:
 
             if not recipe:
                 return web.json_response({"error": "Recipe not found"}, status=404)
+
+            # Expose the on-disk recipe JSON path so the modal can offer
+            # "open file location" without guessing the storage layout.
+            recipe = dict(recipe)
+            try:
+                json_path = await recipe_scanner.get_recipe_json_path(recipe_id)
+            except Exception:  # pragma: no cover - details must still load
+                json_path = None
+            if json_path:
+                recipe["recipe_json_path"] = json_path
+
             return web.json_response(recipe)
         except Exception as exc:
             self._logger.error(