Improve topic posts: use Google News RSS web context before fallback

main.py

@@ -677,16 +677,27 @@ def api_article(url:str=Query(...)):
     else:data=None
     return JSONResponse(data if data else{"error":"not supported"})
 def _web_context(topic):
+    """Collect real web/news context for a topic."""
+    bits=[]
     try:
-        q=quote(topic)
-        r=requests.get("https://duckduckgo.com/html/?q="+q,headers=HEADERS,timeout=12);r.encoding="utf-8"
-        soup=BeautifulSoup(r.text,"lxml");bits=[]
+        rss="https://news.google.com/rss/search?q="+quote(topic)+"&hl=vi&gl=VN&ceid=VN:vi"
+        r=requests.get(rss,headers=HEADERS,timeout=12);r.encoding="utf-8"
+        soup=BeautifulSoup(r.text,"xml")
+        for it in soup.find_all("item")[:8]:
+            title=it.find("title").get_text(" ",strip=True) if it.find("title") else ""
+            src=it.find("source").get_text(" ",strip=True) if it.find("source") else ""
+            if title:bits.append((title+(" — "+src if src else ""))[:280])
+    except:pass
+    if bits:return "\n".join(bits)
+    try:
+        r=requests.get("https://html.duckduckgo.com/html/?q="+quote(topic),headers=HEADERS,timeout=12);r.encoding="utf-8"
+        soup=BeautifulSoup(r.text,"lxml")
         for res in soup.select(".result")[:6]:
             t=res.select_one(".result__title");sn=res.select_one(".result__snippet")
             line=((t.get_text(" ",strip=True) if t else "")+" — "+(sn.get_text(" ",strip=True) if sn else "")).strip(" —")
-            if line:bits.append(line)
-        return "\n".join(bits)
-    except:return ""
+            if line:bits.append(line[:280])
+    except:pass
+    return "\n".join(bits)
 
 def _scrape_generic_article(url):
     try: