HEL-342: 全站切换霜曜日间与黑金夜间主题

按定稿把运行时 token 换成霜曜/黑金双主题，登录与壳层接入官方 Logo 与主题记忆，不改业务接口与金额计算。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

tests/test_reminders_page.py

@@ -37,8 +37,8 @@ class RemindersPageSourceContractTests(unittest.TestCase):
         self.assertIn('id="reminder-tbody"', html)
         self.assertIn('id="reminder-tabs"', html)
         self.assertIn('id="reminder-detail-drawer"', html)
-        self.assertIn("design-system.css?v=10", html)
-        self.assertIn("app.js?v=15", html)
+        self.assertIn("design-system.css?v=11", html)
+        self.assertIn("app.js?v=16", html)
         pending = html.index('id="pending-reminders-card"')
         history = html.index('id="reminder-history-card"')
         send = html.index('id="send-reminder-card"')
@@ -135,7 +135,7 @@ class RemindersPageLayoutSmokeTests(unittest.TestCase):
 
     def test_send_flow_columns_and_no_page_overflow(self) -> None:
         html = (WEB / "admin.html").read_text(encoding="utf-8")
-        self.assertIn("app.js?v=15", html)
+        self.assertIn("app.js?v=16", html)
         with sync_playwright() as p:
             browser = p.chromium.launch()
             page = browser.new_page()