repair missed-bet ledger: same winner=False bug hit the hypothetical settles

All 7 missed entries were insta-settled as losses under the pre-fix semantics.
Chain-verified reality: 4 won, 2 lost, 1 still unresolved (reopened). Missed
P&L -249.17 -> -18.36.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

copybot_state.json

@@ -1197,9 +1197,9 @@
       "price": 0.51,
       "stake": 37.97,
       "reason": "price moved 0.70\u21920.51",
-      "status": "lost",
-      "pnl": -38.53,
-      "settled": 1783016524,
+      "status": "won",
+      "pnl": 35.92,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1212,9 +1212,9 @@
       "price": 0.99,
       "stake": 36.45,
       "reason": "price moved 0.88\u21920.99",
-      "status": "lost",
-      "pnl": -36.46,
-      "settled": 1783037706,
+      "status": "won",
+      "pnl": 0.36,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1227,9 +1227,9 @@
       "price": 0.71,
       "stake": 36.45,
       "reason": "price moved 0.91\u21920.71",
-      "status": "lost",
-      "pnl": -36.77,
-      "settled": 1783037896,
+      "status": "won",
+      "pnl": 14.57,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1244,7 +1244,7 @@
       "reason": "price moved 0.67\u21920.47",
       "status": "lost",
       "pnl": -37.04,
-      "settled": 1783039269,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1257,9 +1257,9 @@
       "price": 0.98,
       "stake": 34.16,
       "reason": "price moved 0.85\u21920.98",
-      "status": "lost",
-      "pnl": -34.18,
-      "settled": 1783040090,
+      "status": "won",
+      "pnl": 0.68,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1274,7 +1274,7 @@
       "reason": "price moved 0.80\u21920.94",
       "status": "lost",
       "pnl": -32.85,
-      "settled": 1783040701,
+      "settled": 1783049259,
       "name": "LSB1"
     },
     {
@@ -1287,9 +1287,9 @@
       "price": 0.44,
       "stake": 32.79,
       "reason": "price moved 0.50\u21920.44",
-      "status": "lost",
-      "pnl": -33.34,
-      "settled": 1783048270,
+      "status": "open",
+      "pnl": null,
+      "settled": null,
       "name": "shisan888"
     }
   ]