feat(recipes): implement get_recipes, get_recipe, create_recipe, delete_recipe (v0.6.0)

Adds 4 new MCP tools for the Family Wall recipe box:
- get_recipes: list all family recipes via metasync id='recipe'
- get_recipe: fetch full recipe detail by id (filters from metasync response)
- create_recipe: create a new recipe via mprecipeput (params use 'recipe.' prefix)
- delete_recipe: delete a recipe via metadelete (same endpoint as tasks)

Verified endpoints and parameter names via FW_DEBUG=1 probe scripts.
All 4 tools pass the create → read → get_single → delete integration test.

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

src/mcp_familywall/modules/recipes.py

@@ -0,0 +1,120 @@
+"""Recipe helper functions for the Family Wall recipe box.
+
+Verified endpoints (2026-04-16 via FW_DEBUG=1):
+  - Create: POST mprecipeput — params use 'recipe.' prefix (recipe.name, etc.)
+  - Read all: POST metasync with id='recipe' — response at a00.r.r.updatedCreated[]
+  - Delete: POST metadelete with id=<recipe_metaId>
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def parse_recipe_summary(raw: dict[str, Any]) -> dict[str, Any]:
+    """Extract a compact recipe summary from a raw API recipe object.
+
+    Args:
+        raw: Raw recipe dict from the API (metasync or mprecipeput response).
+
+    Returns:
+        Dict with keys: id, name, prep_time_minutes, cook_time_minutes, serves,
+        description, can_delete.
+    """
+    prep = raw.get("prepTime")
+    cook = raw.get("cookTime")
+    srv = raw.get("serves")
+    return {
+        "id": raw.get("metaId"),
+        "name": raw.get("name"),
+        "description": raw.get("description") or None,
+        "prep_time_minutes": int(prep) if prep else None,
+        "cook_time_minutes": int(cook) if cook else None,
+        "serves": int(srv) if srv else None,
+        "can_delete": raw.get("rights", {}).get("canDelete") == "true",
+    }
+
+
+def parse_recipe_full(raw: dict[str, Any]) -> dict[str, Any]:
+    """Extract the full recipe from a raw API recipe object.
+
+    Args:
+        raw: Raw recipe dict from the API (metasync or mprecipeput response).
+
+    Returns:
+        Dict with all recipe fields including ingredients, instructions, etc.
+    """
+    prep = raw.get("prepTime")
+    cook = raw.get("cookTime")
+    srv = raw.get("serves")
+
+    # ingredientsList is auto-parsed by the server; normalise to a plain list of names.
+    ingredients_list_raw: list[dict[str, Any]] = raw.get("ingredientsList") or []
+    ingredients_parsed = [item.get("name") for item in ingredients_list_raw if item.get("name")]
+
+    return {
+        "id": raw.get("metaId"),
+        "name": raw.get("name"),
+        "description": raw.get("description") or None,
+        "ingredients": raw.get("ingredients") or None,
+        "ingredients_parsed": ingredients_parsed,
+        "instructions": raw.get("instructions") or None,
+        "prep_time_minutes": int(prep) if prep else None,
+        "cook_time_minutes": int(cook) if cook else None,
+        "serves": int(srv) if srv else None,
+        "url": raw.get("url") or None,
+        "is_favorite": raw.get("isFavorite") == "true",
+        "can_delete": raw.get("rights", {}).get("canDelete") == "true",
+        "can_update": raw.get("rights", {}).get("canUpdate") == "true",
+        "created_at": raw.get("creationDate"),
+        "account_id": raw.get("accountId"),
+    }
+
+
+def build_create_params(
+    name: str,
+    description: str | None = None,
+    ingredients: str | None = None,
+    instructions: str | None = None,
+    prep_time_minutes: int | None = None,
+    cook_time_minutes: int | None = None,
+    serves: int | None = None,
+    url: str | None = None,
+) -> dict[str, str]:
+    """Build the form parameters for a mprecipeput create call.
+
+    The Family Wall API requires the 'recipe.' prefix for all recipe fields.
+    isRecipe='true' is always required.
+
+    Args:
+        name: Recipe title (required).
+        description: Optional description.
+        ingredients: Optional free-text ingredients, lines separated by \\n.
+        instructions: Optional free-text cooking instructions, lines separated by \\n.
+        prep_time_minutes: Optional preparation time in minutes.
+        cook_time_minutes: Optional cooking time in minutes.
+        serves: Optional number of servings.
+        url: Optional external URL (e.g. original recipe source).
+
+    Returns:
+        Dict of form parameters ready to send to mprecipeput.
+    """
+    params: dict[str, str] = {
+        "recipe.name": name,
+        "recipe.isRecipe": "true",
+    }
+    if description is not None:
+        params["recipe.description"] = description
+    if ingredients is not None:
+        params["recipe.ingredients"] = ingredients
+    if instructions is not None:
+        params["recipe.instructions"] = instructions
+    if prep_time_minutes is not None:
+        params["recipe.prepTime"] = str(prep_time_minutes)
+    if cook_time_minutes is not None:
+        params["recipe.cookTime"] = str(cook_time_minutes)
+    if serves is not None:
+        params["recipe.serves"] = str(serves)
+    if url is not None:
+        params["recipe.url"] = url
+    return params