feat(docker): Busiest Containers shows each figure with its scale; readable names (#5253)

The widget names the busiest container in a verdict ("Busiest: tdarr on
VDNT-Docker03, 1.6 of 8 cores."), then a fixed-layout table (container,
host, CPU in cores, memory in bytes) with each figure's share drawn as
shading behind it: of the host's cores, and of the memory limit or the
host's memory.

The numbers were already rendered, but each row grew as wide as its longest
name. A grid item won't shrink below its content, so Gitea CI container
names pushed the figures out of view and the cell scrolled sideways. Names
now come from display_name(): a swarm task by its service (no slot number),
an Actions job container as "CI: <workflow> · <job>". They cut off with …
and show whole on hover.

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

plugins/docker/service.py

@@ -6,6 +6,7 @@ Quart's pipeline) call the same code.
 """
 from __future__ import annotations
 
+import re
 from datetime import datetime, timedelta, timezone
 
 from sqlalchemy import func, select
@@ -126,6 +127,24 @@ def task_label(c, node_hostname: dict | None = None) -> str:
     return f"{svc} · {host}" if host else svc
 
 
+_CI_JOB = re.compile(
+    r"^(?:GITEA|FORGEJO)-ACTIONS-TASK-\d+-WORKFLOW-(?P<workflow>.+?)-JOB-(?P<job>.+?)(?:-[0-9a-f]{16,})?$")
+
+
+def display_name(c) -> str:
+    """A container's name as a list can show it in one short line (#5253): a
+    swarm task by its service (the host says where it runs), a Gitea or
+    Forgejo Actions job container as "CI: <workflow> · <job>", anything else
+    by its own name."""
+    svc = getattr(c, "service_name", None)
+    if svc:
+        return svc
+    m = _CI_JOB.match(c.name or "")
+    if m:
+        return f"CI: {m['workflow']} · {m['job']}"
+    return c.name
+
+
 def usage(c, cpus: int | None, mem_total: int | None, cpu_pct: float | None = None) -> dict:
     """A container's CPU and memory in terms a reader can weigh.