feat(ticket): record urges in thread, show urge count in admin, mail admins

- aksrt_ticket gains urge_count / last_urge_time (schema 3.1.0)
- cooldown moves from transient to an atomic conditional UPDATE
- urge inserts a system reply rendered as a centered notice (not quotable)
- admin list badge + info card row for urge count / last time
- new ticket_urge_admin mail event via aksrt_ticket_urged

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/widget-system/ticket-permission-contract.test.cjs

@@ -126,16 +126,35 @@ test('urge has a cooldown driven by settings', () => {
   const rest = read('src/Ticket/TicketRest.php');
   const body = rest.slice(rest.indexOf('public function urge('));
 
-  assert.match(body, /get_transient\('aksrt_ticket_urge_' \. \$id\)/);
-  assert.match(body, /set_transient\('aksrt_ticket_urge_' \. \$id, time\(\)/);
-  assert.match(body, /TicketSettings::urge_interval\(\) \* MINUTE_IN_SECONDS/);
+  // 冷却以工单行 last_urge_time 为准（条件 UPDATE 防并发），不再依赖 transient。
+  assert.ok(!/_transient\('aksrt_ticket_urge_/.test(rest), 'urge cooldown must not use transients');
+  assert.match(body, /\$count = \$repo->record_urge\(\$id, TicketSettings::urge_interval\(\) \* MINUTE_IN_SECONDS\);/);
+  assert.match(body, /if \(\$count <= 0\) \{\s*\n\s*return new \\WP_Error\('aksrt_ticket_urge_limit'/);
+
+  const repo = read('src/Ticket/TicketRepository.php');
+  assert.match(repo, /SET urge_count = urge_count \+ 1, last_urge_time = %s/);
+  assert.match(repo, /AND \(last_urge_time IS NULL OR last_urge_time <= %s\)/);
+});
+
+test('urge writes a system record, notifies admins and fires the mail hook', () => {
+  const rest = read('src/Ticket/TicketRest.php');
+  const body = rest.slice(rest.indexOf('public function urge('), rest.indexOf('public function close('));
+
+  assert.match(body, /\$repo->create_reply\(\$id, 'system', get_current_user_id\(\)/);
+  assert.match(body, /TicketNotifier::admin_activity\(\$ticket, 'urge'\);/);
+  assert.match(body, /do_action\('aksrt_ticket_urged', \$ticket\);/);
+
+  const repo = read('src/Ticket/TicketRepository.php');
+  assert.match(repo, /if \(!in_array\(\$author_type, \['admin', 'system'\], true\)\) \{/);
+  assert.match(repo, /'urge_count' => \(int\) \(\$row\['urge_count'\] \?\? 0\),/);
 });
 
 test('quoted replies must belong to the same ticket', () => {
   for (const file of ['src/Ticket/TicketRest.php', 'src/Ticket/TicketRestAdmin.php']) {
     const src = read(file);
-    assert.match(src, /if \(\$quoted === null \|\| \(int\) \$quoted\['ticket_id'\] !== \$id\) \{\s*\n\s*\$quote_id = 0;/,
-      `${file} must drop cross-ticket quotes`);
+    // 跨工单引用与系统记录（催单提示）一律丢弃。
+    assert.match(src, /if \(\$quoted === null \|\| \(int\) \$quoted\['ticket_id'\] !== \$id \|\| \$quoted\['author_type'\] === 'system'\) \{\s*\n\s*\$quote_id = 0;/,
+      `${file} must drop cross-ticket and system quotes`);
   }
 
   const repo = read('src/Ticket/TicketRepository.php');