Rename graph.py to pathfinder.py

- Rename graph.py to pathfinder.py for clearer naming
- Update all imports
- Test CLI and tests pass

src/__init__.py

@@ -9,7 +9,7 @@ combining ideas from Tom Johnson, James Tenney, and Larry Polansky.
 from .pitch import Pitch, DIMS_4, DIMS_5, DIMS_7, DIMS_8
 from .chord import Chord
 from .harmonic_space import HarmonicSpace
-from .graph import PathFinder
+from .pathfinder import PathFinder
 
 __all__ = [
     "Pitch",

src/io.py

@@ -244,7 +244,7 @@ def main():
     import argparse
     from .dims import DIMS_4, DIMS_5, DIMS_7, DIMS_8
     from .harmonic_space import HarmonicSpace
-    from .graph import PathFinder
+    from .pathfinder import PathFinder
 
     parser = argparse.ArgumentParser(
         description="Generate chord paths in harmonic space"

src/path.py

@@ -11,7 +11,7 @@ from .pitch import Pitch
 from .chord import Chord
 
 if TYPE_CHECKING:
-    from .graph import Candidate
+    from .pathfinder import Candidate
 
 
 @dataclass

tests/test_compact_sets.py

@@ -202,7 +202,7 @@ class TestCLI:
     def test_target_range_weight(self):
         """Test that target range weight can be enabled and influences path generation."""
         from src.harmonic_space import HarmonicSpace
-        from src.graph import PathFinder
+        from src.pathfinder import PathFinder
 
         space = HarmonicSpace(DIMS_4)
         chords = space.generate_connected_sets(3, 3)