fix(data): normalize ticker on the news path

The yfinance news fetch queried the raw ticker while every other path uses the
canonical symbol, so broker/forex/crypto aliases silently returned no news.
Normalize it (XAUUSD -> GC=F) and keep the user's ticker in the report header.

tests/test_symbol_normalization_paths.py

@@ -1,13 +1,14 @@
 """Symbol normalization must apply on every yfinance path, not just price fetch.
 
-Regression tests for #983 (instrument identity) and #984 (reflection returns):
-a broker symbol like XAUUSD must resolve to the same Yahoo symbol (GC=F) that
-the price path uses, so identity and realized-return lookups hit the right
-instrument instead of failing/mismatching.
+Regression tests for #983 (instrument identity), #984 (reflection returns), and
+the news path: a broker symbol like XAUUSD must resolve to the same Yahoo symbol
+(GC=F) that the price path uses, so identity, realized-return, and news lookups
+hit the right instrument instead of failing/mismatching.
 """
 import pandas as pd
 
 import tradingagents.agents.utils.agent_utils as au
+import tradingagents.dataflows.yfinance_news as ynews
 import tradingagents.graph.trading_graph as tg
 from tradingagents.graph.trading_graph import TradingAgentsGraph
 
@@ -52,3 +53,23 @@ def test_fetch_returns_normalizes_symbol(monkeypatch):
     assert queried[0] == "GC=F"  # stock symbol normalized (#984)
     assert queried[1] == "SPY"   # benchmark left as the canonical symbol
     assert raw is not None and days is not None
+
+
+def test_news_lookup_normalizes_symbol(monkeypatch):
+    seen = {}
+
+    class FakeTicker:
+        def __init__(self, symbol):
+            seen["symbol"] = symbol
+
+        def get_news(self, count):
+            return []
+
+    monkeypatch.setattr(ynews.yf, "Ticker", FakeTicker)
+    monkeypatch.setattr(ynews, "yf_retry", lambda fn: fn())
+
+    out = ynews.get_news_yfinance("XAUUSD", "2025-01-01", "2025-01-10")
+
+    assert seen["symbol"] == "GC=F"   # news queried with the canonical symbol
+    assert "XAUUSD" in out            # the user's ticker stays in the report
+    assert "GC=F" in out              # provenance noted