fix(admin): merge ticket controls into information panel

Edit status, department and assignee directly in ticket information, remove the redundant handling card and its layout rules, and cover editable and closed-ticket rendering.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/admin/ticket-native-render.test.cjs

@@ -46,6 +46,34 @@ test('detail is independently loaded even for a closed ticket outside current fi
   assert.match(open.data.panel, /<dt>工单号<\/dt><dd>TK-00021<\/dd>/);
 });
 
+test('ticket information owns the only status editor and closed tickets stay read-only', () => {
+  const { open, closed } = rendered();
+  const sidebarCards = panel => {
+    const sidebar = panel.match(/<aside\b[^>]*>([\s\S]*?)<\/aside>/)?.[1] || '';
+    return [...sidebar.matchAll(/<section class="aksrt-ticket-detail__card(?: [^"]+)?">([\s\S]*?)<\/section>/g)].map(match => match[1]);
+  };
+  const cards = sidebarCards(open.data.panel);
+  assert.equal(cards.length, 2, 'only ticket information and internal notes remain');
+  const info = cards[0];
+  assert.match(info, /<h3>工单信息<\/h3>/);
+  assert.match(info, /data-aksrt-ticket-form="status"/);
+  assert.match(info, /data-aksrt-ticket-assign/);
+  assert.match(info, /保存工单信息/);
+  assert.doesNotMatch(open.data.panel, /<h3[^>]*>处理工单<\/h3>/);
+  assert.doesNotMatch(info, /aksrt-ticket-badge/);
+  for (const [name, label] of [['status', '状态'], ['ticket_type_id', '部门'], ['admin_id', '跟进人']]) {
+    const id = `aksrt-ticket-${name}-21`;
+    assert.ok(info.includes(`<label for="${id}">${label}</label>`));
+    assert.ok(info.includes(`<select id="${id}" name="${name}"`));
+    assert.equal((open.data.panel.match(new RegExp(`name="${name}"`, 'g')) || []).length, 1);
+  }
+  assert.match(cards[1], /内部备注/);
+  const closedInfo = sidebarCards(closed.data.panel)[0];
+  assert.match(closedInfo, /<h3>工单信息<\/h3>/);
+  assert.match(closedInfo, /aksrt-ticket-badge/);
+  assert.doesNotMatch(closedInfo, /<form|<select|data-aksrt-ticket-assign|保存工单信息/);
+});
+
 test('read handler enforces capability, nonce and record existence', () => {
   const { missing, denied, nonce } = rendered();
   assert.equal(missing.status, 404);