v1.52.1 — doctor reports Obsidian auto-use state
Patch: cdt-doctor now reports the Obsidian sync's effective state — a path-enabled vault (v1.52.0 auto-use) showed as off; it now shows ON (auto) → <vault>, matching cdt-obsidian status and cdt-config show. Display-only; no behavior change. Full notes in CHANGELOG.