48h article window, add CISA feeds, remove dead feeds

rss_manager.py

@@ -219,12 +219,12 @@ class RSSFeedManager:
             'canonical_url': canonical_url,
         }
 
-    def is_article_from_today(self, published_dt: datetime) -> bool:
-        """Allow only items published on today's UTC date."""
-        now_utc = datetime.now(timezone.utc).date()
+    def is_article_recent(self, published_dt: datetime) -> bool:
+        """Allow articles published within the last 48 hours."""
         if published_dt.tzinfo is None:
             published_dt = published_dt.replace(tzinfo=timezone.utc)
-        return published_dt.astimezone(timezone.utc).date() == now_utc
+        age = datetime.now(timezone.utc) - published_dt.astimezone(timezone.utc)
+        return age.total_seconds() <= 48 * 3600
 
     def is_duplicate_article(self, article: Dict) -> bool:
         """Check URL/content fingerprint duplicates against sent-history."""
@@ -309,7 +309,7 @@ class RSSFeedManager:
                         published_dt = datetime(*published[:6], tzinfo=timezone.utc)
 
                         # Strict real-time gate: today's UTC articles only.
-                        if not self.is_article_from_today(published_dt):
+                        if not self.is_article_recent(published_dt):
                             continue
 
                         # Get content/description