Latest 'init' job status surfaced under the host-detail vitals strip
(succeeded/failed/running/queued, with link to the live job log on
non-success). New POST /hosts/{id}/repo/reinit handler dispatches a
fresh init job after the operator types the host name to confirm;
audit row records 'host.repo_reinit'.
Extract header/vitals/sub-tabs into a host_chrome partial that every
host-detail tab page renders. Sources / Schedules / Repo go from
inert divs to real <a> links backed by stub pages that share the
chrome and a 'coming next' body — slices 2/3/4 fill them in.
Also re-establishes the version indicator (host_schedule_version vs
agent's applied_schedule_version) in the header.
Drops the legacy fat-schedule list/edit templates that referenced
fields removed by the P2 redesign (Manual / Paths / RetentionPolicy
on Schedule); the new templates land in slice 3.
steve