refactor(user-lifecycle): drop redundant titles and duplicate run-now button

Cleans up two leftover redundancies after the Phase-1 cockpit
foundation landed in cc2cf3a:

* The audit-list panel embedded inside the settings page rendered
  its own "User lifecycle logs" titlebar — a redundant heading
  below the page-level titlebar that already says exactly that.
  The embedded panel now renders the filter toolbar + grid
  directly. Page-level title carries the context.
* The Run-Now action existed twice — inline in a <details>-card
  inside the form and again in the aside Quick-Actions list. The
  inline version is gone; aside is the single discoverable home
  for policy-level danger actions, consistent with how Phase 1
  introduced Purge logs there too.
* The orphan $lastRunSummary string in the action and view stays
  removed accordingly. KPI tile "Last run" still carries the
  relative-time + status hint, so no information is lost — just
  surfaced once instead of twice.

Three architecture-test lists updated to match the panel's new
shape, each with an inline comment so future readers see why the
panel is intentionally absent:
* DetailActionPolicyContractFiles.migratedConfirmFiles drops the
  user-lifecycle settings view (its danger action delegates to the
  aside-actions partial, already in this list).
* ListUiSharedPartialsContractTest.purgeTitlebarTemplateFiles drops
  the panel (no titlebar of its own anymore).
* ListTitlebarContractFiles.titlebarTemplateFiles drops the panel
  for the same reason.

All six quality gates green; behaviour-identical to a user with the
required permission (purge + run-now both still available, just
sourced from the aside).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Architecture/ListUiSharedPartialsContractTest.php

@@ -24,11 +24,14 @@ class ListUiSharedPartialsContractTest extends TestCase
      */
     private function purgeTitlebarTemplateFiles(): array
     {
+        // Note: settings-user-lifecycle-panel.phtml is intentionally absent.
+        // The panel is embedded inside the user-lifecycle settings page and
+        // delegates its purge action to the aside-actions partial — it has
+        // no titlebar of its own.
         return [
             'pages/admin/scheduled-jobs/index(default).phtml',
             'modules/audit/pages/audit/api-audit/index(default).phtml',
             'modules/audit/pages/audit/import-audit/index(default).phtml',
-            'modules/audit/templates/settings-user-lifecycle-panel.phtml',
             'modules/audit/pages/audit/system-audit/index(default).phtml',
         ];
     }