feat: add scan terminal dashboard with AI city analysis integration

frontend/app/api/scan/terminal/ai-city/route.ts

@@ -7,7 +7,7 @@ import {
 const API_BASE = process.env.POLYWEATHER_API_BASE_URL;
 const SCAN_AI_PROXY_TIMEOUT_MS = Math.max(
   35_000,
-  Number(process.env.POLYWEATHER_SCAN_AI_PROXY_TIMEOUT_MS || "45000") || 45_000,
+  Number(process.env.POLYWEATHER_SCAN_AI_PROXY_TIMEOUT_MS || "55000") || 55_000,
 );
 
 export const dynamic = "force-dynamic";

frontend/components/dashboard/Dashboard.module.css

@@ -12624,6 +12624,127 @@
   line-height: 1.6;
 }
 
+.root :global(.scan-loading-state) {
+  flex: 1;
+  min-height: 520px;
+  display: grid;
+  place-items: center;
+  align-content: center;
+  justify-items: center;
+  gap: 14px;
+  padding: 48px 32px;
+  text-align: center;
+}
+
+.root :global(.scan-loading-orb) {
+  position: relative;
+  width: 74px;
+  height: 74px;
+  border-radius: 999px;
+  background:
+    radial-gradient(circle at center, rgba(77, 163, 255, 0.2) 0 22%, transparent 23%),
+    conic-gradient(from 20deg, rgba(77, 163, 255, 0.08), rgba(77, 163, 255, 0.95), rgba(34, 197, 94, 0.78), rgba(77, 163, 255, 0.08));
+  box-shadow:
+    0 0 0 1px rgba(77, 163, 255, 0.14),
+    0 18px 42px rgba(77, 163, 255, 0.18);
+  animation: scan-loading-spin 1.25s linear infinite;
+}
+
+.root :global(.scan-loading-orb::before) {
+  content: "";
+  position: absolute;
+  inset: 8px;
+  border-radius: inherit;
+  background: #0b1220;
+}
+
+.root :global(.scan-loading-orb span) {
+  position: absolute;
+  inset: 26px;
+  z-index: 1;
+  border-radius: inherit;
+  background: #4da3ff;
+  box-shadow:
+    0 0 18px rgba(77, 163, 255, 0.72),
+    0 0 36px rgba(34, 197, 94, 0.28);
+  animation: scan-loading-pulse 1.25s ease-in-out infinite;
+}
+
+.root :global(.scan-loading-orb i) {
+  position: absolute;
+  z-index: 1;
+  top: 4px;
+  left: 50%;
+  width: 9px;
+  height: 9px;
+  margin-left: -4.5px;
+  border-radius: 999px;
+  background: #e6edf3;
+  box-shadow: 0 0 18px rgba(230, 237, 243, 0.86);
+}
+
+.root :global(.scan-loading-title) {
+  color: #e6edf3;
+  font-size: 20px;
+  font-weight: 900;
+}
+
+.root :global(.scan-loading-copy) {
+  color: #9fb2c7;
+  font-size: 13px;
+  font-weight: 700;
+}
+
+.root :global(.scan-loading-steps) {
+  display: inline-flex;
+  gap: 7px;
+  margin-top: 2px;
+}
+
+.root :global(.scan-loading-steps span) {
+  width: 32px;
+  height: 3px;
+  border-radius: 999px;
+  background: rgba(77, 163, 255, 0.24);
+  animation: scan-loading-step 1.2s ease-in-out infinite;
+}
+
+.root :global(.scan-loading-steps span:nth-child(2)) {
+  animation-delay: 0.16s;
+}
+
+.root :global(.scan-loading-steps span:nth-child(3)) {
+  animation-delay: 0.32s;
+}
+
+@keyframes scan-loading-spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@keyframes scan-loading-pulse {
+  0%,
+  100% {
+    transform: scale(0.82);
+    opacity: 0.74;
+  }
+  50% {
+    transform: scale(1);
+    opacity: 1;
+  }
+}
+
+@keyframes scan-loading-step {
+  0%,
+  100% {
+    background: rgba(77, 163, 255, 0.2);
+  }
+  50% {
+    background: rgba(77, 163, 255, 0.9);
+  }
+}
+
 .root :global(.scan-terminal.light) {
   background:
     radial-gradient(circle at top, rgba(59, 130, 246, 0.1), transparent 34%),
@@ -12678,6 +12799,7 @@
 .root :global(.scan-terminal.light .scan-detail-city-sub),
 .root :global(.scan-terminal.light .scan-detail-volume-caption),
 .root :global(.scan-terminal.light .scan-empty-copy),
+.root :global(.scan-terminal.light .scan-loading-copy),
 .root :global(.scan-terminal.light .scan-kv span:first-child),
 .root :global(.scan-terminal.light .scan-chart-label),
 .root :global(.scan-terminal.light .scan-trade-sub),
@@ -12685,6 +12807,14 @@
   color: #475569;
 }
 
+.root :global(.scan-terminal.light .scan-loading-title) {
+  color: #0f172a;
+}
+
+.root :global(.scan-terminal.light .scan-loading-orb::before) {
+  background: #f7f9fc;
+}
+
 .root :global(.scan-terminal.light .scan-list-tabs button),
 .root :global(.scan-terminal.light .scan-mode-tab-sub),
 .root :global(.scan-terminal.light .scan-opportunity-models em),

frontend/components/dashboard/ScanTerminalDashboard.tsx

@@ -730,7 +730,11 @@ function AiPinnedCityCard({
             <button
               type="button"
               className="scan-ai-city-icon-button"
-              onClick={() => setAiRefreshToken((current) => current + 1)}
+              onClick={(event) => {
+                event.preventDefault();
+                event.stopPropagation();
+                setAiRefreshToken((current) => current + 1);
+              }}
               aria-label={isEn ? `Refresh ${displayName} analysis` : `刷新 ${displayName} 深度分析`}
               title={isEn ? "Refresh analysis" : "刷新深度分析"}
               disabled={aiForecast.status === "loading"}
@@ -740,7 +744,11 @@ function AiPinnedCityCard({
             <button
               type="button"
               className="scan-ai-city-icon-button danger"
-              onClick={onRemove}
+              onClick={(event) => {
+                event.preventDefault();
+                event.stopPropagation();
+                onRemove();
+              }}
               aria-label={isEn ? `Remove ${displayName}` : `移除 ${displayName}`}
               title={isEn ? "Remove city" : "移除城市"}
               disabled={removing}
@@ -832,10 +840,14 @@ function AiPinnedCityCard({
                 </>
               ) : aiForecast.status === "ready" ? (
                 <p>
-                  {aiForecast.payload?.reason ||
+                  {aiForecast.payload?.status === "timeout"
-                    (isEn
+                    ? isEn
-                      ? "AI read is unavailable for this city right now."
+                      ? "Deepseek V4-Pro timed out. You can retry; city data and the right briefing were not refreshed."
-                      : "该城市暂时没有可用的 AI 解读。")}
+                      : "Deepseek V4-Pro 本次解读超时，可稍后重试；城市数据和右侧简报不会被刷新。"
+                    : aiForecast.payload?.reason ||
+                      (isEn
+                        ? "AI read is unavailable for this city right now."
+                        : "该城市暂时没有可用的 AI 解读。")}
                 </p>
               ) : aiForecast.status === "failed" ? (
                 <p>
@@ -1417,10 +1429,21 @@ function ScanTerminalScreen() {
       <div className={clsx(styles.root, detailChromeStyles.root, modalChromeStyles.root)}>
         <div className={clsx("scan-terminal", themeMode === "light" && "light")}>
           <main className="scan-data-grid">
-            <div className="scan-empty-state">
+            <div className="scan-loading-state" role="status" aria-live="polite">
-              <div className="scan-empty-title">{isEn ? "Checking access" : "正在检查权限"}</div>
+              <div className="scan-loading-orb" aria-hidden="true">
-              <div className="scan-empty-copy">
+                <span />
-                {isEn ? "Preparing your deep analysis workspace." : "正在准备深度分析台。"}
+                <i />
+              </div>
+              <div className="scan-loading-title">
+                {isEn ? "Preparing deep analysis" : "正在准备深度分析"}
+              </div>
+              <div className="scan-loading-copy">
+                {isEn ? "Checking access and loading city context." : "正在检查权限并载入城市上下文。"}
+              </div>
+              <div className="scan-loading-steps" aria-hidden="true">
+                <span />
+                <span />
+                <span />
               </div>
             </div>
           </main>

web/scan_terminal_service.py

@@ -45,6 +45,10 @@ SCAN_AI_TIMEOUT_SEC = max(
     30,
     int(os.getenv("POLYWEATHER_SCAN_AI_TIMEOUT_SEC", "40")),
 )
+SCAN_CITY_AI_TIMEOUT_SEC = max(
+    20,
+    int(os.getenv("POLYWEATHER_SCAN_CITY_AI_TIMEOUT_SEC", "32")),
+)
 SCAN_AI_CACHE_TTL_SEC = max(
     30,
     int(os.getenv("POLYWEATHER_SCAN_AI_CACHE_TTL_SEC", "120")),
@@ -915,9 +919,9 @@ def _call_deepseek_city_ai(ai_input: Dict[str, Any]) -> Dict[str, Any]:
         "city_snapshot": ai_input,
     }
     timeout = httpx.Timeout(
-        timeout=float(SCAN_AI_TIMEOUT_SEC),
+        timeout=float(SCAN_CITY_AI_TIMEOUT_SEC),
-        connect=min(8.0, float(SCAN_AI_TIMEOUT_SEC)),
+        connect=min(8.0, float(SCAN_CITY_AI_TIMEOUT_SEC)),
-        read=float(SCAN_AI_TIMEOUT_SEC),
+        read=float(SCAN_CITY_AI_TIMEOUT_SEC),
         write=10.0,
         pool=5.0,
     )
@@ -988,7 +992,7 @@ def build_scan_city_ai_forecast_payload(
     )
     data = _analyze(
         city_name,
-        force_refresh=force_refresh,
+        force_refresh=False,
         include_llm_commentary=False,
         detail_mode="full",
     )
@@ -1073,7 +1077,7 @@ def build_scan_city_ai_forecast_payload(
             "city": data.get("name") or city_name,
             "city_display_name": data.get("display_name") or city_name,
             "duration_ms": duration_ms,
-            "reason": f"V4 provider timed out after {SCAN_AI_TIMEOUT_SEC}s",
+            "reason": f"V4 provider timed out after {SCAN_CITY_AI_TIMEOUT_SEC}s",
         }
     except Exception as exc:
         duration_ms = int((time.time() - started_at) * 1000)