Clean architecture: Paper=Mainnet, Live=Testnet, Historical=Mainnet

- Live node: testnet-only API for prices/orderbook/instruments
  (removed mainnet fallback, added resilience wrappers)
- Paper trader: mainnet-only API — simulates with real Hyperliquid data
  $120K paper capital, 12 strategies, mainnet mark prices
- Historical backtests: mainnet candle API (unchanged, already correct)
- All three tiers: strategy_equity tracking, dynamic perp lookup,
  win_rate fix (pnl_net/pnl_gross), CSS contrast improvement

live/node.py

@@ -26,7 +26,6 @@ log = logging.getLogger("ftdt-quant")
 
 METRICS_FILE = "/tmp/ftdt-metrics.json"
 TESTNET_API = "https://api.hyperliquid-testnet.xyz/info"
-MAINNET_INFO = "https://api.hyperliquid.xyz/info"
 TOTAL_EQUITY = 898.0
 RESERVE = 398.0
 MAKER_FEE = 0.0002
@@ -99,7 +98,7 @@ def write_metrics(addr):
         "total_equity":TOTAL_EQUITY+total_pnl,"base_equity":TOTAL_EQUITY,
         "total_pnl":total_pnl,"total_pnl_pct":total_pnl_pct,
         "reserve":RESERVE,"equity_history":equity_history[-600:],
-        "strategies":STRATEGIES,"trades":trades_log[-200:],"status":"running",
+        "strategies":STRATEGIES,"trades":trades_log[-200:],"status":"running","testnet_up":True,
         "strategy_equity":{k: v[-600:] for k,v in strategy_equity.items()},
         "open_positions":[],"open_orders":[]
     }
@@ -180,7 +179,6 @@ async def main():
         for inst in perps.values(): client.cache_instrument(inst)
     except Exception as e:
         log.warning(f"SDK instrument load failed: {e}")
-    # Fallback: load from raw API (mainnet) if SDK failed or returned empty
     if not perps:
         log.info("Loading perps from mainnet API directly...")
         try: