diff --git a/tests/tools/__init__.py b/tests/tools/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/conftest.py b/tests/tools/conftest.py
similarity index 100%
rename from tests/conftest.py
rename to tests/tools/conftest.py
diff --git a/tests/test_balabit_adapter.py b/tests/tools/test_balabit_adapter.py
similarity index 100%
rename from tests/test_balabit_adapter.py
rename to tests/tools/test_balabit_adapter.py
diff --git a/tests/test_eval_metrics.py b/tests/tools/test_eval_metrics.py
similarity index 100%
rename from tests/test_eval_metrics.py
rename to tests/tools/test_eval_metrics.py
diff --git a/tests/test_models.py b/tests/tools/test_models.py
similarity index 100%
rename from tests/test_models.py
rename to tests/tools/test_models.py
diff --git a/tests/test_scroll_collector.py b/tests/tools/test_scroll_collector.py
similarity index 100%
rename from tests/test_scroll_collector.py
rename to tests/tools/test_scroll_collector.py
diff --git a/tests/test_scroll_models.py b/tests/tools/test_scroll_models.py
similarity index 100%
rename from tests/test_scroll_models.py
rename to tests/tools/test_scroll_models.py
diff --git a/tests/test_scroll_trainer.py b/tests/tools/test_scroll_trainer.py
similarity index 100%
rename from tests/test_scroll_trainer.py
rename to tests/tools/test_scroll_trainer.py
diff --git a/tests/test_server.py b/tests/tools/test_server.py
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rename from tests/test_server.py
rename to tests/tools/test_server.py
diff --git a/tests/test_trainer.py b/tests/tools/test_trainer.py
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rename from tests/test_trainer.py
rename to tests/tools/test_trainer.py
diff --git a/tests/unit/__init__.py b/tests/unit/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py
new file mode 100644
index 0000000..7f48be2
--- /dev/null
+++ b/tests/unit/conftest.py
@@ -0,0 +1 @@
+"""Fixtures for library-only tests (no torch)."""
diff --git a/tests/test_coord.py b/tests/unit/test_coord.py
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rename from tests/test_coord.py
rename to tests/unit/test_coord.py
diff --git a/tests/test_generator.py b/tests/unit/test_generator.py
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rename from tests/test_generator.py
rename to tests/unit/test_generator.py
diff --git a/tests/test_scroll_generator.py b/tests/unit/test_scroll_generator.py
similarity index 100%
rename from tests/test_scroll_generator.py
rename to tests/unit/test_scroll_generator.py