fix: FileTools uses local workspace before API for file content (#6.2)

tests/test_file_tools.py

@@ -124,3 +124,31 @@ def test_update_file_failure() -> None:
         "owner", "repo", "path/to/file", "msg", "content", "branch"
     )
     assert "Error updating file: API Error" in res
+
+
+def test_get_file_content_uses_local_file_when_available(tmp_path: str) -> None:
+    import os
+    mock_client = _create_mock_client()
+
+    repo_dir = tmp_path / "owner" / "repo"
+    repo_dir.mkdir(parents=True)
+    file_path = repo_dir / "path" / "to" / "file"
+    file_path.parent.mkdir(parents=True)
+    file_path.write_text("local file content")
+
+    file_tools = FileTools(mock_client, str(tmp_path))
+    res = file_tools.get_file_content("owner", "repo", "path/to/file")
+    assert res == "1: local file content"
+    mock_client.files.get_file_content.assert_not_called()
+
+
+def test_get_file_content_falls_back_to_api_when_no_local(tmp_path: str) -> None:
+    mock_client = _create_mock_client()
+    mock_client.files.get_file_content.return_value = "api content"
+
+    file_tools = FileTools(mock_client, str(tmp_path))
+    res = file_tools.get_file_content("owner", "repo", "path/to/file")
+    assert res == "1: api content"
+    mock_client.files.get_file_content.assert_called_once_with(
+        "owner", "repo", "path/to/file"
+    )