The docker_services and systemd_services roles ran their "start the
service" tasks with `failed_when: false`, so a container or unit that
failed to come up still reported the deploy as green. Drop it from both
start tasks so a broken deploy actually fails CI. The compose/unit *copy*
tasks keep `failed_when: false` — that's load-bearing for the
`item is not failed` filter that skips services without a compose/unit file.
Also:
- Remove a duplicate "Template service .env files" task in docker_services
(second copy used a hardcoded path and didn't register; first one is the
one the start task reads).
- Don't trigger a full fleet deploy on docs/markdown/workflow-only pushes
to main — add docs/**, **/*.md and .github/** to paths-ignore.
- Drop the dangling `update-freebsd` Make target (playbook doesn't exist;
fleet has no FreeBSD hosts).
