feat(config): benchmark Taiwan, Korea, Singapore and the main European exchanges (#1392)

- .TW, .TWO, .KS, .KQ, .SI, .DE, .PA, .AS, .SW and .MI tickers are measured against their regional index instead of SPY

tradingagents/default_config.py

@@ -161,8 +161,18 @@ DEFAULT_CONFIG = _apply_env_overrides({
         ".NS":  "^NSEI",       # NSE India (Nifty 50)
         ".BO":  "^BSESN",      # BSE India (Sensex)
         ".T":   "^N225",       # Tokyo (Nikkei 225)
+        ".TW":  "^TWII",       # Taiwan (TAIEX)
+        ".TWO": "^TWII",       # Taipei OTC (TPEx has no Yahoo index; TAIEX)
+        ".KS":  "^KS11",       # Korea (KOSPI)
+        ".KQ":  "^KQ11",       # Korea (KOSDAQ)
         ".HK":  "^HSI",        # Hong Kong (Hang Seng)
+        ".SI":  "^STI",        # Singapore (Straits Times)
         ".L":   "^FTSE",       # London (FTSE 100)
+        ".DE":  "^GDAXI",      # Germany (DAX)
+        ".PA":  "^FCHI",       # Paris (CAC 40)
+        ".AS":  "^AEX",        # Amsterdam (AEX)
+        ".SW":  "^SSMI",       # Switzerland (SMI)
+        ".MI":  "FTSEMIB.MI",  # Milan (FTSE MIB)
         ".TO":  "^GSPTSE",     # Toronto (TSX Composite)
         ".AX":  "^AXJO",       # Australia (ASX 200)
         ".SS":  "000001.SS",   # Shanghai (SSE Composite)

tradingagents/graph/settlement.py

@@ -16,10 +16,9 @@ def resolve_benchmark(ticker: str, config: dict) -> str:
     ``config["benchmark_ticker"]`` overrides everything when set; otherwise
     the suffix map matches the ticker's exchange suffix (e.g. ``.T`` for
     Tokyo). US-listed tickers without a dotted suffix fall through to the
-    empty-suffix entry (SPY by default). Unrecognised suffixes (including
-    US tickers with dots like ``BRK.B``) also fall back to the empty-suffix
-    entry, which is the right default because the alpha calculation works
-    in USD.
+    empty-suffix entry (SPY by default). Unrecognised suffixes, including
+    US tickers with dots like ``BRK.B``, also take the empty-suffix entry.
+    Returns are compared as percentages, each in its own currency.
     """
 
     explicit = config.get("benchmark_ticker")