refactor: purge all remaining crypto/Binance references

- Replace BTCUSDT/SOLUSDT/ETHUSDT with AAPL/MSFT in all test files
- Update backtester default symbol to AAPL
- Update strategy-engine default symbols to US stocks
- Update project description and CLI help text
- Remove empty superpowers docs directory
- Zero crypto references remaining in codebase

2 files changed, 13 insertions, 13 deletions

diff --git a/services/portfolio-manager/tests/test_portfolio.py b/services/portfolio-manager/tests/test_portfolio.py
index 768e071..365dc1a 100644
--- a/services/portfolio-manager/tests/test_portfolio.py
+++ b/services/portfolio-manager/tests/test_portfolio.py
@@ -10,7 +10,7 @@ def make_order(side: OrderSide, price: str, quantity: str) -> Order:
     """Helper to create a filled Order."""
     return Order(
         signal_id="test-signal",
-        symbol="BTC/USDT",
+        symbol="AAPL",
         side=side,
         type=OrderType.MARKET,
         price=Decimal(price),
@@ -24,7 +24,7 @@ def test_portfolio_add_buy_order() -> None:
     order = make_order(OrderSide.BUY, "50000", "0.1")
     tracker.apply_order(order)
 
-    position = tracker.get_position("BTC/USDT")
+    position = tracker.get_position("AAPL")
     assert position is not None
     assert position.quantity == Decimal("0.1")
     assert position.avg_entry_price == Decimal("50000")
@@ -35,7 +35,7 @@ def test_portfolio_add_multiple_buys() -> None:
     tracker.apply_order(make_order(OrderSide.BUY, "50000", "0.1"))
     tracker.apply_order(make_order(OrderSide.BUY, "52000", "0.1"))
 
-    position = tracker.get_position("BTC/USDT")
+    position = tracker.get_position("AAPL")
     assert position is not None
     assert position.quantity == Decimal("0.2")
     assert position.avg_entry_price == Decimal("51000")
@@ -46,7 +46,7 @@ def test_portfolio_sell_reduces_position() -> None:
     tracker.apply_order(make_order(OrderSide.BUY, "50000", "0.2"))
     tracker.apply_order(make_order(OrderSide.SELL, "55000", "0.1"))
 
-    position = tracker.get_position("BTC/USDT")
+    position = tracker.get_position("AAPL")
     assert position is not None
     assert position.quantity == Decimal("0.1")
     assert position.avg_entry_price == Decimal("50000")
@@ -54,7 +54,7 @@ def test_portfolio_sell_reduces_position() -> None:
 
 def test_portfolio_no_position_returns_none() -> None:
     tracker = PortfolioTracker()
-    position = tracker.get_position("ETH/USDT")
+    position = tracker.get_position("MSFT")
     assert position is None
 
 
@@ -66,7 +66,7 @@ def test_realized_pnl_on_sell() -> None:
     tracker.apply_order(
         Order(
             signal_id="s1",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.BUY,
             type=OrderType.MARKET,
             price=Decimal("50000"),
@@ -80,7 +80,7 @@ def test_realized_pnl_on_sell() -> None:
     tracker.apply_order(
         Order(
             signal_id="s2",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.SELL,
             type=OrderType.MARKET,
             price=Decimal("55000"),
@@ -98,7 +98,7 @@ def test_realized_pnl_on_loss() -> None:
     tracker.apply_order(
         Order(
             signal_id="s1",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.BUY,
             type=OrderType.MARKET,
             price=Decimal("50000"),
@@ -109,7 +109,7 @@ def test_realized_pnl_on_loss() -> None:
     tracker.apply_order(
         Order(
             signal_id="s2",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.SELL,
             type=OrderType.MARKET,
             price=Decimal("45000"),
@@ -128,7 +128,7 @@ def test_realized_pnl_accumulates() -> None:
     tracker.apply_order(
         Order(
             signal_id="s1",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.BUY,
             type=OrderType.MARKET,
             price=Decimal("50000"),
@@ -141,7 +141,7 @@ def test_realized_pnl_accumulates() -> None:
     tracker.apply_order(
         Order(
             signal_id="s2",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.SELL,
             type=OrderType.MARKET,
             price=Decimal("55000"),
@@ -154,7 +154,7 @@ def test_realized_pnl_accumulates() -> None:
     tracker.apply_order(
         Order(
             signal_id="s3",
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side=OrderSide.SELL,
             type=OrderType.MARKET,
             price=Decimal("60000"),
diff --git a/services/portfolio-manager/tests/test_snapshot.py b/services/portfolio-manager/tests/test_snapshot.py
index a464599..ec5e92d 100644
--- a/services/portfolio-manager/tests/test_snapshot.py
+++ b/services/portfolio-manager/tests/test_snapshot.py
@@ -13,7 +13,7 @@ class TestSaveSnapshot:
         from portfolio_manager.main import save_snapshot
 
         pos = Position(
-            symbol="BTCUSDT",
+            symbol="AAPL",
             quantity=Decimal("0.5"),
             avg_entry_price=Decimal("50000"),
             current_price=Decimal("52000"),