feat(lists): add update_list tool (v0.7.3)

Implements taskupdatelist endpoint (verified via FW_DEBUG=1):
- Parameter 'metaId' (not 'id') identifies the list
- Partial update: only provided fields (name/color/emoji) are changed
- Reads rights.canUpdate before calling the endpoint (single session)
- System lists (canUpdate != 'true') are rejected with a clear error
- Scope derived from list metaId for secondary-circle support

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 = "0.7.2"
+version = "0.7.3"
 description = "MCP server for Family Wall — read your family's lists and tasks via Claude"
 readme = "README.md"
 requires-python = ">=3.12"