feat(notion-writer): --engine routing + two-phase image append

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

custom-skills/32-notion-writer/code/scripts/test_engine_routing.py

@@ -8,6 +8,7 @@ from unittest import mock
 sys.path.insert(0, str(Path(__file__).parent))
 
 import _notion_compat as compat
+import notion_writer
 
 
 def _fake_client():
@@ -48,11 +49,28 @@ def test_replace_markdown():
     assert kwargs["body"]["replace_content"]["allow_deleting_content"] is True
 
 
+def test_extract_local_images_splits():
+    content = ("# Title\n\n![remote](https://ex.com/a.png)\n\n"
+               "![local](./b.png)\n\nbody")
+    without, imgs = notion_writer.extract_local_images(content)
+    assert imgs == [("local", "./b.png")]
+    assert "![local](./b.png)" not in without
+    assert "![remote](https://ex.com/a.png)" in without  # remote stays
+
+
+def test_content_has_local_images():
+    assert notion_writer._content_has_local_images("![x](./y.png)") is True
+    assert notion_writer._content_has_local_images("![x](https://e/y.png)") is False
+    assert notion_writer._content_has_local_images("no images") is False
+
+
 def run_all():
     tests = [
         test_create_page_markdown,
         test_append_markdown,
         test_replace_markdown,
+        test_extract_local_images_splits,
+        test_content_has_local_images,
     ]
     for t in tests:
         print(f"\n{t.__name__}")