Ticket #78 PR #30 Review: pass_audit approved Add unified get_status MCP tool for project overview. Changes: - Extracted shared serializers: serialize_ticket() and serialize_member() - Refactored handle_list_tickets and handle_list_members to use shared serializers - Added get_status tool that returns: - Project metadata (id, name, total_tickets) - Ticket counts by status - Tickets needing attention (unassigned_todo, pending_audit) - Worker and reviewer availability (orchestrator excluded) Acceptance criteria all met: - Shared serialization methods extracted ✓ - list_members and list_tickets refactored to use shared serializers ✓ - get_status tool returns aggregated project state ✓ - get_status reuses same serializers (no duplication) ✓ - Worker and reviewer status included (orchestrator excluded) ✓ - Tickets needing attention highlighted ✓ - Test coverage added (3 new tests) ✓