Refine TAF summaries and trim peak-window marker overlaps

frontend/lib/dashboard-utils.ts

@@ -977,13 +977,33 @@ export function computeFrontTrendSignal(
           return "";
         })()
       : "";
+  const peakTafStillRelevant =
+    peakWindowEndMinutes === null ||
+    currentMinutes === null ||
+    currentMinutes < peakWindowEndMinutes;
   const effectivePeakTafSummary =
-    peakTafSummary && peakTafSummary !== currentTafSummary ? peakTafSummary : "";
+    peakTafStillRelevant &&
+    peakTafSummary &&
+    peakTafSummary !== currentTafSummary
+      ? peakTafSummary
+      : "";
+  const currentTafLine = tafTimelineSummary
+    ? isEnglish(locale)
+      ? `Current TAF: ${tafTimelineSummary}`
+      : `当前 TAF：${tafTimelineSummary}`
+    : "";
+  const peakTafLine = effectivePeakTafSummary
+    ? isEnglish(locale)
+      ? `Peak-window TAF: ${effectivePeakTafSummary}`
+      : `峰值窗口 TAF：${effectivePeakTafSummary}`
+    : "";
+  const tafFallbackSummary =
+    currentTafLine || peakTafLine ? "" : tafSummary;
   upperAirSummary = [
     baseUpperAirSummary,
-    tafTimelineSummary,
+    currentTafLine,
-    effectivePeakTafSummary,
+    peakTafLine,
-    tafSummary,
+    tafFallbackSummary,
   ]
     .filter(Boolean)
     .join(isEnglish(locale) ? " " : "");
@@ -992,9 +1012,9 @@ export function computeFrontTrendSignal(
       ? {
           label: isEnglish(locale) ? "Airport TAF" : "机场预报",
           note:
-            tafTimelineSummary ||
+            currentTafLine ||
-            effectivePeakTafSummary ||
+            peakTafLine ||
-            tafSummary ||
+            tafFallbackSummary ||
             (isEnglish(locale)
               ? "Airport TAF is available for the current peak window."
               : "当前峰值窗口已接入机场 TAF 预报。"),
@@ -1449,9 +1469,9 @@ export function computeFrontTrendSignal(
     backendSummary && backendSummary !== summary ? backendSummary : "";
   const combinedSummary = [
     summary,
-    tafTimelineSummary,
+    currentTafLine,
-    effectivePeakTafSummary,
+    peakTafLine,
-    tafSummary,
+    tafFallbackSummary,
     tafContrastSummary,
     backendSupplement,
   ]

web/analysis_service.py

@@ -494,7 +494,9 @@ def _build_taf_signal(
     for segment in segments:
         start_local = segment["start_utc"].astimezone(local_tz)
         end_local = segment["end_utc"].astimezone(local_tz)
-        if end_local < peak_window_start or start_local > peak_window_end:
+        overlap_start = max(start_local, peak_window_start)
+        overlap_end = min(end_local, peak_window_end)
+        if overlap_end <= overlap_start:
             continue
         active_segments.append(segment)
         joined = " ".join(segment["tokens"])
@@ -538,7 +540,7 @@ def _build_taf_signal(
         if segment["type"] in {"PROB30 TEMPO", "PROB40 TEMPO"} or level == "high":
             disruption_level = "high"
 
-        marker_time_local = start_local
+        marker_time_local = overlap_start
         marker_hour = marker_time_local.strftime("%H:00")
         hazards = []
         if level != "low":
@@ -548,19 +550,19 @@ def _build_taf_signal(
         if segment_regimes:
             hazards.append("wind")
         summary_zh = (
-            f"{segment['type']} {start_local.strftime('%H:%M')}-{end_local.strftime('%H:%M')} "
+            f"{segment['type']} {overlap_start.strftime('%H:%M')}-{overlap_end.strftime('%H:%M')} "
             f"{'有阵雨/雷暴扰动' if level == 'high' else '有云雨扰动' if level == 'medium' else '以稳定为主'}"
         )
         summary_en = (
-            f"{segment['type']} {start_local.strftime('%H:%M')}-{end_local.strftime('%H:%M')} "
+            f"{segment['type']} {overlap_start.strftime('%H:%M')}-{overlap_end.strftime('%H:%M')} "
             f"{'shows shower/thunder disruption' if level == 'high' else 'shows cloud/rain disruption' if level == 'medium' else 'stays relatively stable'}"
         )
         markers.append(
             {
                 "label_time": marker_hour,
                 "marker_type": segment["type"],
-                "start_local": start_local.strftime("%H:%M"),
+                "start_local": overlap_start.strftime("%H:%M"),
-                "end_local": end_local.strftime("%H:%M"),
+                "end_local": overlap_end.strftime("%H:%M"),
                 "suppression_level": level,
                 "summary_zh": summary_zh,
                 "summary_en": summary_en,