fix: get_categories locale filter and list-type filter (v0.4.9)

Bug 1: all 171 category locale variants were returned; now filtered by
locale parameter (default "de") → 13 German categories for shopping lists.

Bug 2: TODO lists returned 171 shopping categories because
sortingIndexByTaskList contains ALL list IDs regardless of type.
Fix: look up list's taskListType via taskgettasklists, then match against
category's taskListType. TODO lists (type=TODOS) return empty list since
all API categories are SHOPPING_LIST type.

sortingIndexByTaskList is explicitly documented as unreliable for type
filtering in both code comments and SPEC.md.

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 = "0.4.8"
+version = "0.4.9"
 description = "MCP server for Family Wall — read your family's lists and tasks via Claude"
 readme = "README.md"
 requires-python = ">=3.12"