Add models module

src/models/severity.py

@@ -1,38 +1,20 @@
-"""Severity levels for validation findings."""
-
+"""Severity levels."""
 from enum import Enum
 
-
 class Severity(Enum):
-    """Severity levels for validation findings."""
-
     LOW = "low"
     MEDIUM = "medium"
     HIGH = "high"
     CRITICAL = "critical"
 
     @classmethod
-    def from_string(cls, value: str) -> "Severity":
-        """Create severity from string value."""
+    def from_string(cls, value: str):
         value_lower = value.lower()
         for severity in cls:
             if severity.value == value_lower:
                 return severity
         raise ValueError(f"Unknown severity level: {value}")
 
-    def __lt__(self, other: "Severity") -> bool:
-        """Compare severity levels."""
+    def __lt__(self, other):
         order = [Severity.LOW, Severity.MEDIUM, Severity.HIGH, Severity.CRITICAL]
         return order.index(self) < order.index(other)
-
-    def __le__(self, other: "Severity") -> bool:
-        """Compare severity levels (less than or equal)."""
-        return self == other or self < other
-
-    def __gt__(self, other: "Severity") -> bool:
-        """Compare severity levels (greater than)."""
-        return not self <= other
-
-    def __ge__(self, other: "Severity") -> bool:
-        """Compare severity levels (greater than or equal)."""
-        return not self < other