Unplug lattice detector from package, expand research docs

tests/test_api.py

@@ -18,12 +18,10 @@ CHATGPT = SAMPLES / "chatgpt-1.png"
 
 class TestTopLevelExports:
     def test_lazy_reexports_resolve(self):
-        from remove_ai_watermarks import openai_provenance, synthid_detector
+        from remove_ai_watermarks import openai_provenance
 
         assert raiw.remove_visible is api.remove_visible
         assert raiw.visible_provenance is api.visible_provenance
-        assert raiw.detect_synthid is synthid_detector.detect_synthid
-        assert raiw.SynthIDDetection is synthid_detector.SynthIDDetection
         assert raiw.verify_openai_synthid is openai_provenance.verify_openai_synthid
         assert raiw.OpenAIProvenanceError is openai_provenance.OpenAIProvenanceError
         assert raiw.OpenAISynthIDDetection is openai_provenance.OpenAISynthIDDetection
@@ -32,6 +30,12 @@ class TestTopLevelExports:
         with pytest.raises(AttributeError):
             _ = raiw.does_not_exist
 
+    def test_local_synthid_detector_is_not_a_package_export(self):
+        with pytest.raises(AttributeError):
+            _ = raiw.detect_synthid
+        with pytest.raises(AttributeError):
+            _ = raiw.SynthIDDetection
+
     def test_bare_import_is_light(self):
         # importing the package must not pull the heavy cv2/torch stack (PEP 562 lazy).
         # Checked in a FRESH interpreter -- another test in this process may already