feat(meal-planner): add delete_meal_plan_entry tool (v0.11.4)

Reuses the existing metadelete endpoint (already used for tasks and
recipes). Validates that entry_id starts with 'dish/' or 'meal/' before
calling the API. SPEC.md updated to reflect metadelete's broader scope.

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

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mcp-familywall"
-version = "0.11.3"
+version = "0.11.4"
 description = "MCP server for Family Wall — read your family's lists and tasks via Claude"
 readme = "README.md"
 requires-python = ">=3.12"