feat(meal-planner): add is_from_recipe_box field to get_meal_plan (v0.10.3)

Join recipeList[] from API response as a lookup table: isRecipe="true"
means a real recipe from the recipe box, "false" is a free-text stub.
Dish entries get is_from_recipe_box=true/false; meal entries get null.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -2,7 +2,7 @@
 
 MCP server for [Family Wall](https://www.familywall.com) -- read and manage your family's circles, lists, tasks, and recipes directly from Claude.
 
-## Features (v0.10.2)
+## Features (v0.10.3)
 
 ### Read
 
@@ -15,7 +15,7 @@ MCP server for [Family Wall](https://www.familywall.com) -- read and manage your
 - `get_recipes` -- list all family recipes (compact summary: id, name, prep/cook time, serves)
 - `get_recipe` -- get a single recipe in full detail (ingredients, instructions, ingredients_parsed, category_ids, etc.)
 - `get_recipe_categories` -- list all available recipe categories (always returns all 5 standard categories: Bei Kindern beliebt, Wirklich einfach, Nachspeisen, Schmeckt toll, Gemüse; plus any additional categories found in existing recipes)
-- `get_meal_plan` -- get meal plan entries for a date range (Premium feature; merges dish and meal entries, sorted by date + type; fields: id, date, type, name, recipe_id, note, serves, can_update, can_delete)
+- `get_meal_plan` -- get meal plan entries for a date range (Premium feature; merges dish and meal entries, sorted by date + type; fields: id, date, type, name, recipe_id, is_from_recipe_box, note, serves, can_update, can_delete)
 
 ### Write (with confirmation prompt)