feat(docker): readable names, CPU in cores and memory in bytes, failures listed with since-times (#5209)

#5209 "Docker views: readable names, CPU/memory in cores and bytes, failures
listed with since-time" (milestone 477 "UI problems first").

- A swarm task reads as its service and slot ("codex_db · 1", or the node
  for a global service), with the raw name in the title: Docker page, host
  panel, busiest widget, container detail.
- CPU reads in cores (Docker's 100% = one core), toned by its share of the
  host's CPUs from the agent's per-core series. Memory reads in bytes, against
  a limit only when one is really set (Docker reports host RAM otherwise).
- Exit 137/143 without an OOM kill is a stop, not a failure: no
  exited_nonzero, no crash-loop death, no "failed (24h)", dim exit code.
- "Failed (24h)" is a list (Docker page #failures, linked from the widget
  and the tile): plain containers by their deaths, swarm services by Swarm's
  failed tasks; a second manager's copy of a task death counts once.
- Failing swarm services lead Needs attention; services sort problems first
  with since-times on the page, the widget and the Swarm page; nodes that
  are down or drained sort first.
- Busiest widget orders by a 5-minute CPU average so the list holds still.
- Host panel: a table, problems first with what is wrong and since when;
  replaced swarm tasks hidden and counted.
- Container detail: node hostname, I/O labelled "since start", Restarts
  hidden for swarm tasks with a note on where task failures are.
- Widget names: "Docker — Services & failures", "Docker — Busiest containers".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugins/docker/mcp_tools.py

@@ -194,7 +194,8 @@ async def list_containers(host: str = "", status: str = "", problem: str = "",
       "restarting", "crash_looping" (died repeatedly within the last hour;
       the count is set under Settings → Thresholds, default 3), "unhealthy"
       (failing its healthcheck), "oom_killed", "exited_nonzero" (died with an
-      error in the last 24h); empty for no filter.
+      error in the last 24h; exit 137/143 without an OOM kill is a stop, not
+      an error); empty for no filter.
     compose_project: only containers from this Compose project.
     limit: default 100, max 500.