终端搜索扩至全字段匹配：city key、中英文 region、market question 等 11 个字段

frontend/components/dashboard/scan-terminal/ScanTerminalShellParts.tsx

@@ -18,36 +18,17 @@ export function ScanTerminalLoadingScreen({
 }) {
   return (
     <div className={rootClassName}>
-      <div className={clsx("scan-terminal", themeMode === "light" && "light")}>
-        <main className="scan-data-grid">
-          <div className="scan-topbar">
-            <div className="scan-topbar-title">
-              <strong>
-                {isEn ? "PolyWeather Terminal" : "PolyWeather 交易决策台"}
-              </strong>
-              <span>
-                {isEn
-                  ? "Loading decision cards, city evidence, and market signals"
-                  : "正在加载决策卡、城市证据和市场信号"}
-              </span>
-            </div>
-            <div className="scan-topbar-actions">
-              <span className="scan-topbar-time">{userLocalTime}</span>
-            </div>
-          </div>
-          <div className="scan-loading-state">
-            <LoadingSignal
-              title={
-                isEn ? "Preparing decision workspace" : "正在准备决策工作台"
-              }
-              description={
-                isEn
-                  ? "Checking access, city context and today's tradable weather windows."
-                  : "正在检查权限、城市上下文和今日可交易天气窗口。"
-              }
-            />
-          </div>
-        </main>
+      <div className={clsx("flex h-screen w-full items-center justify-center bg-[#e9edf3]", themeMode === "light" && "light")}>
+        <LoadingSignal
+          title={
+            isEn ? "Preparing decision workspace" : "正在准备决策工作台"
+          }
+          description={
+            isEn
+              ? "Checking access, city context and today's tradable weather windows."
+              : "正在检查权限、城市上下文和今日可交易天气窗口。"
+          }
+        />
       </div>
     </div>
   );