fix: track last_published_at per source to avoid re-fetching same articles — applies to both news_api and macro_news

services/adapters/macro_news_adapter.py

@@ -46,6 +46,9 @@ class MacroNewsAdapter(BaseAdapter):
         The ticker parameter is ignored for macro sources — these are
         global/geopolitical news, not company-specific.
 
+        Uses published_utc.gt to only fetch articles newer than the last
+        successful fetch, avoiding re-fetching the same articles.
+
         Args:
             ticker: Ignored for macro sources (may be empty string).
             config: Source-specific configuration with url, params, etc.
@@ -67,6 +70,11 @@ class MacroNewsAdapter(BaseAdapter):
         limit = config.get("limit", 20)
         params["limit"] = str(min(int(limit), 1000))
 
+        # Use last_published_at from config to only fetch newer articles
+        last_published = config.get("last_published_at")
+        if last_published:
+            params["published_utc.gt"] = last_published
+
         async with httpx.AsyncClient(timeout=30) as client:
             t0 = time.monotonic()
             try: