feat(ansible): one strip of tabs, a run list that opens on its verdict, a run page in one line (#5328, #5329, #5330)

- section_tabs macro; Runs · Playbooks · Schedules · Inventory on every
  Ansible page, replacing each page's own set of header buttons.
- Runs: a verdict line (last 30 days, failures first with the latest named,
  running now, the schedule due next); under each status what the run did
  across its hosts (ansible/recap.py); a filter bar (playbook, status, who
  started it) that swaps the table and carries into the scroll paging.
- Run page: status, duration, start and who started it in one line; each
  host's result in words, worst first; the playbook it ran links to it;
  the log and failures on classes rather than inline colours.

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

steward/templates/ansible/_tabs.html

@@ -0,0 +1,8 @@
+{# ansible/_tabs.html — the Ansible section's pages as one strip of tabs (#5328),
+   on every Ansible page; `active` names the page or the one it sits under. #}
+{% from "_macros.html" import section_tabs %}
+{% macro ansible_tabs(active) -%}
+{{ section_tabs([("runs", "Runs", "/ansible/"), ("playbooks", "Playbooks", "/ansible/browse"),
+                 ("schedules", "Schedules", "/ansible/schedules"),
+                 ("inventory", "Inventory", "/ansible/inventory/targets")], active, "Ansible") }}
+{%- endmacro %}