feat(ansible): runs named by what ran where, with ago, duration and one status badge (#5125)

Runs read "update.yml on web-1" (run_title over the scope label, beside
describe_scope) on the runs list, the run page's title and breadcrumb, and
the run-started panel. The list shows started |ago (full time on hover),
|duration (counting "so far" while a run is going) and a dry-run tag.

Run statuses join STATES, so the list and the run page use status_badge:
queued dim, running info (blue, so work in progress doesn't read as a
problem), success ok "Succeeded", failed crit, interrupted warn, cancelled
dim. run_started.html leaves its hard-coded colours for tokens; the run
page's facts move to the .kv list and its failures to var(--red). Template
hex colours: 54 -> 47.

Also fixes #5124's sidebar count, which CI run 8389 failed on: the stylesheet
guard allows no weight above 500, and .nav-count asked for 600.

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

steward/ansible/inventory_gen.py

@@ -127,6 +127,15 @@ def describe_scope(scope: str, targets: dict[str, str], groups: dict[str, str])
     return scope
 
 
+def run_title(playbook: str, scope_label: str | None) -> str:
+    """A run named by what it ran where: "update.yml on web-1",
+    "site.yml on group Docker Swarm", "ping.yml on all inventory targets"."""
+    where = scope_label or ""
+    if where.startswith("target "):
+        where = where[len("target "):]
+    return f"{playbook} on {where}" if where else playbook
+
+
 async def scope_labels(db, scopes) -> dict[str, str]:
     """{scope: describe_scope(scope)} for the given scopes, in two queries."""
     from sqlalchemy import select