fix(devcontainer): restart telegraf on container start to fix login1 race
On WSL+Docker Desktop, restarting a stopped devcontainer causes telegraf to start before systemd-logind (org.freedesktop.login1) has settled, making PAM fail to register sudo sessions. Adding a postStartCommand that restarts telegraf after the container is up resolves the race.
Closes #208 (closed)
Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com