fix(recipes): normalize newlines + add update_recipe (v0.6.1)

Bug fix: literal backslash-n sequences in ingredients/instructions are now
converted to real newline characters before sending to the API, so the server
correctly splits ingredient lines into ingredientsList[].

New tool: update_recipe — partial update via mprecipeput with recipe.metaId;
fetches current recipe in the same session to verify can_update and supply
name fallback. Verified: recipe.metaId triggers update (not create).

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 (v0.6.0)
+## Features (v0.6.1)
 
 ### Read
 
@@ -26,7 +26,8 @@ MCP server for [Family Wall](https://www.familywall.com) -- read and manage your
 - `create_category` -- create a custom category for a shopping list (with optional icon)
 - `delete_category` -- delete a custom category (system categories are protected)
 - `like_post` -- like a wall post/activity
-- `create_recipe` -- create a new recipe (name, description, ingredients, instructions, prep/cook time, serves, url)
+- `create_recipe` -- create a new recipe (name, description, ingredients, instructions, prep/cook time, serves, url); use `\n` to separate ingredient lines
+- `update_recipe` -- update any field of an existing recipe (partial update — omitted fields unchanged)
 - `delete_recipe` -- permanently delete a recipe (only own recipes)
 
 ## Requirements