v0.7.1-beta

Fixed

• doctor no longer prints the "using the default shared state dir" warning when run in a shared-state-dir context (field feedback from a downstream project on 0.7.0 launch day). The top-level guard warning carries no actionable meaning for a read-only health check — doctor's own state_dir check surface already covers state-dir health — and it polluted stderr for --json pipeline consumers. Covered by a regression test asserting doctor's stderr stays clean.