Default equity chain baseline to 100k when live_capital unset.

Co-authored-by: Cursor <cursoragent@cursor.com>

trade_log_lib.py

@@ -37,9 +37,17 @@ def _read_initial_capital(conn, initial_capital: float | None = None) -> float:
         return float(initial_capital)
     try:
         row = conn.execute("SELECT value FROM settings WHERE key='live_capital'").fetchone()
-        return float(row[0] or 0) if row else 0.0
+        if row and row[0]:
+            val = float(row[0] or 0)
+            if val > 0:
+                return val
     except (TypeError, ValueError):
-        return 0.0
+        pass
+    try:
+        from product_recommend import DISCONNECTED_RECOMMEND_CAPITAL
+        return float(DISCONNECTED_RECOMMEND_CAPITAL)
+    except Exception:
+        return 100_000.0
 
 
 def refresh_trade_log_equity_chain(