Re-structure the project.

src/matcher/strategies/base.py

@@ -0,0 +1,42 @@
+"""
+Base class for matching strategies.
+"""
+
+from abc import ABC, abstractmethod
+from ..models import TokenLike, Match
+from ..token_index import TokenIndex
+
+
+class BaseMatchStrategy(ABC):
+    """Base class for all matching strategies."""
+
+    def __init__(self, context_radius: float = 200.0):
+        """
+        Initialize the strategy.
+
+        Args:
+            context_radius: Distance to search for context keywords
+        """
+        self.context_radius = context_radius
+
+    @abstractmethod
+    def find_matches(
+        self,
+        tokens: list[TokenLike],
+        value: str,
+        field_name: str,
+        token_index: TokenIndex | None = None
+    ) -> list[Match]:
+        """
+        Find matches for the given value.
+
+        Args:
+            tokens: List of tokens to search
+            value: Value to find
+            field_name: Name of the field
+            token_index: Optional spatial index for efficient lookup
+
+        Returns:
+            List of Match objects
+        """
+        pass