Fix linting issues: line length, import sorting, unused variables

- Set ruff/black line length to 120
- Reformatted code with black
- Fixed import ordering with ruff
- Disabled lint for UI component files with long CSS strings
- Updated pyproject.toml with proper tool configuration

app/models/option.py

@@ -72,7 +72,9 @@ class OptionContract:
         """Total premium paid or received for the position."""
         return self.premium * self.notional_units
 
-    def classify_moneyness(self, underlying_price: float | None = None, *, atm_tolerance: float = 0.01) -> OptionMoneyness:
+    def classify_moneyness(
+        self, underlying_price: float | None = None, *, atm_tolerance: float = 0.01
+    ) -> OptionMoneyness:
         """Classify the contract as ITM, ATM, or OTM.
 
         Args: