feat: introduce versioning (v1.2.0) and display it in dashboard

src/strategies/ping_pong_bot.py

@@ -39,6 +39,7 @@ logger = logging.getLogger("PingPongBot")
 
 class PingPongBot:
     def __init__(self, config_path="config/ping_pong_config.yaml"):
+        self.version = "1.2.0"
         with open(config_path, 'r') as f:
             self.config = yaml.safe_load(f)
         
@@ -135,7 +136,7 @@ class PingPongBot:
     def render_dashboard(self):
         """Render a clean summary of the bot state"""
         # 1. Config Table
-        cfg_table = Table(title="[bold cyan]PING-PONG BOT CONFIG[/]", box=box.ROUNDED, expand=True)
+        cfg_table = Table(title=f"[bold cyan]PING-PONG BOT CONFIG (v{self.version})[/]", box=box.ROUNDED, expand=True)
         cfg_table.add_column("Property", style="dim")
         cfg_table.add_column("Value", style="bold white")
         cfg_table.add_row("Symbol", f"{self.symbol} ({self.interval}m)")