Zero-config monitor and compare

- `trader.py monitor` — runs ALL 9 strategies by default, $10k capital,
  $2 fee, integer shares. Just start and forget.
- `trader.py compare` — auto-discovers all state files in data/, no
  --strategy needed. Ranks by return with equity curves.
- Monitor defaults: --capital 10000, --fixed-fee 2.0, --integer-shares

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

trader.py

@@ -595,8 +595,31 @@ def cmd_status(args):
 
 def cmd_compare(args):
     """Compare multiple strategies side-by-side."""
+    import glob as _glob
+
     market = args.market
-    strategy_names = args.strategy
+    strategy_names = getattr(args, "strategy", None)
+
+    # Auto-discover: find all trader_{market}_*.json state files
+    if not strategy_names:
+        pattern = os.path.join("data", f"trader_{market}_*.json")
+        files = sorted(_glob.glob(pattern))
+        strategy_names = []
+        for f in files:
+            # Extract strategy name: trader_{market}_{name}.json
+            base = os.path.basename(f)  # trader_us_foo.json
+            prefix = f"trader_{market}_"
+            name = base[len(prefix):-len(".json")]
+            # Skip sim_ prefixed (historical simulations) unless no live ones
+            strategy_names.append(name)
+
+        if not strategy_names:
+            print(f"No state files found for market '{market}' in data/.")
+            print(f"Run 'monitor' or 'auto' first to generate state.")
+            return
+
+        print(f"  Auto-discovered {len(strategy_names)} strategies: "
+              f"{', '.join(strategy_names)}")
 
     # Load all states
     states = {}
@@ -1277,19 +1300,19 @@ def main():
 
     # Monitor (long-running daemon for tmux) — supports multiple strategies
     p_monitor = sub.add_parser("monitor",
-        help="Long-running daemon: auto-runs daily after market close (for tmux)")
+        help="Long-running daemon: runs ALL strategies daily (for tmux)")
     p_monitor.add_argument("--market", choices=UNIVERSES.keys(), default="us")
     p_monitor.add_argument("--strategy", nargs="+",
                            choices=list(STRATEGY_REGISTRY.keys()),
-                           default=["recovery_mom_top10"],
+                           default=list(STRATEGY_REGISTRY.keys()),
-                           help="One or more strategies to run in parallel")
+                           help="Strategies to run (default: ALL)")
-    p_monitor.add_argument("--capital", type=float, default=100_000)
+    p_monitor.add_argument("--capital", type=float, default=10_000)
     p_monitor.add_argument("--tx-cost", type=float, default=0.001,
                            help="Proportional transaction cost (default: 0.001 = 10bps)")
-    p_monitor.add_argument("--fixed-fee", type=float, default=0.0,
+    p_monitor.add_argument("--fixed-fee", type=float, default=2.0,
-                           help="Fixed dollar fee per trade")
+                           help="Fixed dollar fee per trade (default: $2)")
-    p_monitor.add_argument("--integer-shares", action="store_true", default=False,
+    p_monitor.add_argument("--integer-shares", action="store_true", default=True,
-                           help="Only trade whole shares (no fractional)")
+                           help="Only trade whole shares (default: True)")
 
     # Status (strategy is a free-form string to allow sim_ prefixed names)
     p_status = sub.add_parser("status", help="Show current portfolio")
@@ -1316,10 +1339,11 @@ def main():
     p_log.add_argument("--end", default=None, help="End date filter (YYYY-MM-DD)")
 
     # Compare strategies
-    p_cmp = sub.add_parser("compare", help="Compare multiple strategies side-by-side")
+    p_cmp = sub.add_parser("compare",
+        help="Compare strategies side-by-side (auto-discovers all if no --strategy)")
     p_cmp.add_argument("--market", choices=UNIVERSES.keys(), default="us")
-    p_cmp.add_argument("--strategy", nargs="+", required=True,
+    p_cmp.add_argument("--strategy", nargs="+", default=None,
-                       help="Strategy state names to compare (e.g. recovery_mom_top10 momentum)")
+                       help="Strategy names to compare (default: auto-discover all)")
 
     args = parser.parse_args()