feat(mma): Implement AST Skeleton View generator using tree-sitter

tests/test_mma_skeleton.py

@@ -0,0 +1,40 @@
+import pytest
+from scripts.mma_exec import generate_skeleton
+
+def test_generate_skeleton():
+    sample_code = '''
+class Calculator:
+    """Performs basic math operations."""
+    
+    def add(self, a: int, b: int) -> int:
+        """Adds two numbers."""
+        result = a + b
+        return result
+
+def log_message(msg):
+    timestamp = "2026-02-25"
+    print(f"[{timestamp}] {msg}")
+'''
+
+    skeleton = generate_skeleton(sample_code)
+
+    # Check that signatures are preserved
+    assert "class Calculator:" in skeleton
+    assert "def add(self, a: int, b: int) -> int:" in skeleton
+    assert "def log_message(msg):" in skeleton
+
+    # Check that docstrings are preserved
+    assert '"""Performs basic math operations."""' in skeleton
+    assert '"""Adds two numbers."""' in skeleton
+
+    # Check that implementation details are removed
+    assert "result = a + b" not in skeleton
+    assert "return result" not in skeleton
+    assert "timestamp =" not in skeleton
+    assert "print(" not in skeleton
+
+    # Check that bodies are replaced with ellipsis
+    assert "..." in skeleton
+
+if __name__ == "__main__":
+    pytest.main([__file__])