fix: change default ticker

cli/main.py

@@ -508,7 +508,7 @@ def get_user_selections():
 
 def get_ticker():
     """Get ticker symbol from user input."""
-    return typer.prompt("", default="SPY")
+    return typer.prompt("", default="BTC")
 
 
 def get_analysis_date():

tradingagents/i18n/interface/en.py

@@ -60,7 +60,7 @@ LANG = {
     "step7_prompt": "Select your thinking agents for analysis",
     "step8_title": "Step 8: Thinking Agents",
     "step8_prompt": "Select your thinking agents for analysis",
-    "default_ticker": "SPY",
+    "default_ticker": "BTC",
     "ticker_validate": "Please enter a valid ticker symbol.",
     "date_validate": "Please enter a valid date in YYYY-MM-DD format.",
     "analyst_instruction": "\n- Press Space to select/unselect analysts\n- Press 'a' to select/unselect all\n- Press Enter when done",

tradingagents/i18n/interface/zh.py

@@ -60,7 +60,7 @@ LANG = {
     "step7_prompt": "请选择用于简单分析的思考代理",
     "step8_title": "步骤8：思考代理",
     "step8_prompt": "请选择用于深度分析的思考代理",
-    "default_ticker": "SPY",
+    "default_ticker": "BTC",
     "ticker_validate": "请输入有效的资产代码。",
     "date_validate": "请输入有效的日期，格式为YYYY-MM-DD。",
     "analyst_instruction": "\n- 空格选择/取消分析师\n- 'a' 全选/取消全选\n- 回车确认",