fix: alpaca snapshot 멀티 티커 제한 100 → 1000

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/api/v1/endpoints/alpaca.py

@@ -333,13 +333,13 @@ async def get_snapshot(ticker: str):
     ),
 )
 async def get_snapshots(
-    tickers: str = Query(..., description="Comma-separated ticker symbols, e.g. AAPL,MSFT,NVDA"),
+    tickers: str = Query(..., description="Comma-separated ticker symbols, e.g. AAPL,MSFT,NVDA (max 1000)"),
 ):
     symbols = [s.strip().upper() for s in tickers.split(",") if s.strip()]
     if not symbols:
         raise HTTPException(status_code=400, detail="No tickers provided.")
-    if len(symbols) > 100:
-        raise HTTPException(status_code=400, detail="Maximum 100 tickers per request.")
+    if len(symbols) > 1000:
+        raise HTTPException(status_code=400, detail="Maximum 1000 tickers per request.")
 
     client = AlpacaClient()
     if not client.is_configured():