More AI articles (30), OG fallback for all, replace Công Nghệ with Ứng dụng AI on homepage

main.py

@@ -323,7 +323,7 @@ def scrape_dantri_congnghe():
         return arts
     except:return[]
 def scrape_genk_ai():
-    """Scrape AI articles from genk.vn with OG image fallback"""
+    """Scrape AI articles from genk.vn with OG image fallback - up to 30 articles"""
     try:
         r=requests.get("https://genk.vn/ai.chn",headers=HEADERS,timeout=15)
         if r.status_code!=200:return[]
@@ -346,8 +346,8 @@ def scrape_genk_ai():
                 if img_src:break
                 container=container.parent
             seen.add(href);articles.append({"title":title,"link":href,"img":img_src,"source":"genk"})
-            if len(articles)>=15:break
-        # OG image fallback for articles missing thumbnails
+            if len(articles)>=30:break
+        # OG image fallback for ALL articles missing thumbnails
         def _fetch_og(art):
             if art["img"]:return
             try:
@@ -355,9 +355,9 @@ def scrape_genk_ai():
                 s2=BeautifulSoup(r2.text,"lxml").find("meta",property="og:image")
                 if s2:art["img"]=s2.get("content","")
             except:pass
-        need=[a for a in articles if not a["img"]][:8]
+        need=[a for a in articles if not a["img"]]
         if need:
-            with ThreadPoolExecutor(4) as ex:list(ex.map(_fetch_og,need))
+            with ThreadPoolExecutor(6) as ex:list(ex.map(_fetch_og,need))
         return articles
     except:return[]
 def scrape_dantri_article(url):
@@ -425,7 +425,7 @@ def api_homepage():
         with ThreadPoolExecutor(12) as ex:
             futs={ex.submit(scrape_vne,VNE_CATS[k][0]):VNE_CATS[k][1] for k in["thoi-su","the-gioi","kinh-doanh","the-thao","giai-tri","phap-luat","giao-duc","du-lich","doi-song"]}
             futs[ex.submit(scrape_bbc_vietnamese)]="BBC"
-            futs[ex.submit(scrape_dantri_congnghe)]="Công Nghệ"
+            futs[ex.submit(scrape_genk_ai)]="Ứng dụng AI"
             for f in as_completed(futs):
                 try:
                     for a in f.result():a["group"]=futs[f];articles.append(a)
@@ -436,13 +436,13 @@ def api_homepage():
 def api_category(cat_id:str):
     def _f():
         if cat_id=="bbc":return scrape_bbc_vietnamese()
-        if cat_id=="cong-nghe":return scrape_dantri_congnghe()
+        if cat_id=="ai":return scrape_genk_ai()
         if cat_id in VNE_CATS:arts=scrape_vne(VNE_CATS[cat_id][0]);[a.update({"group":VNE_CATS[cat_id][1]}) for a in arts];return arts
         return[]
     return JSONResponse(_cached(f"cat_{cat_id}",_f))
 @app.get("/api/categories")
 def api_categories():
-    cats=[{"id":"bbc","name":"BBC Tiếng Việt","source":"bbc"},{"id":"cong-nghe","name":"Công Nghệ","source":"dantri"}]
+    cats=[{"id":"bbc","name":"BBC Tiếng Việt","source":"bbc"},{"id":"ai","name":"Ứng dụng AI","source":"genk"}]
     for k,(u,n) in VNE_CATS.items():cats.append({"id":k,"name":n,"source":"vne"})
     return JSONResponse(cats)
 @app.get("/api/dantri_hot")