feat(lists): get_lists() without scope returns all circles (v0.8.2)

Implement v0.8.2: When get_lists() is called without a scope parameter,
it now fetches lists from ALL circles instead of only the primary circle.

Implementation:
- Login once, call famlistfamily to get all circle IDs
- For each circle, call taskgettasklists(scope=<circle_id>)
- Merge results and return all lists with circle_id field

All tests passed: test_multi circle creation, list creation in secondary
circle, get_lists() without scope returns lists from both circles.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mcp-familywall"
-version = "0.8.1"
+version = "0.8.2"
 description = "MCP server for Family Wall — read your family's lists and tasks via Claude"
 readme = "README.md"
 requires-python = ">=3.12"