daemon log lines carry no timestamps

open   by a73x

Labels: backlog, observability

From the M17 field trial + collect.sh work. muxd's detached log (~/.local/state/mux/muxd.log) and the hub's stderr are bare lines — nothing in the estate can be correlated across machines (the key-drift hunt had to hand-assemble state from four places, and collect.sh can only stamp the collection instant, not the events). A minimal prefix (ISO-8601 UTC + pid) on daemon/hub log writes would make bundles diffable across boxes. Interacts with the open log-rotation (02e5bd20) and per-socket-logs (5ec6164a) items — one logging pass could take all three.