service: wrapper v2 supervisor stdio redirect + doctor system-python import fix
The launchd plist hard-coded StandardOutPath/StandardErrorPath at install
time, so `sol config journal --move|--switch` left phantom health/ logs at
the old journal path. Move the redirect into the managed wrapper, gated on
`$1 = supervisor`, and bump the wrapper to managed-version 2. _logs reads
journal/health/service.log on both Darwin and Linux now.
Doctor's `from think.install_guard import parse_wrapper` was triggering
think/__init__.py's eager re-exports of detect_created / detect_transcript
/ planner, which transitively pull in frontmatter — unavailable under the
system python3 the Makefile uses. Gut the re-exports; verified zero
non-package callers (all real imports already use the submodule path).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>