feat(notion-writer): parse standalone images to image blocks

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

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

@@ -413,6 +413,28 @@ def test_no_literal_markers_leak():
     _assert("bold" in joined and "link" in joined, "visible words preserved")
 
 
+def test_image_remote_external():
+    blocks = markdown_to_notion_blocks("![a chart](https://ex.com/c.png)")
+    assert len(blocks) == 1
+    b = blocks[0]
+    assert b["type"] == "image"
+    assert b["image"]["type"] == "external"
+    assert b["image"]["external"]["url"] == "https://ex.com/c.png"
+    assert b["image"]["caption"][0]["text"]["content"] == "a chart"
+
+
+def test_image_local_external_shape_preupload():
+    blocks = markdown_to_notion_blocks("![local](./pics/x.png)")
+    assert len(blocks) == 1
+    assert blocks[0]["image"]["external"]["url"] == "./pics/x.png"
+
+
+def test_image_only_when_standalone():
+    # An inline bang-bracket inside prose is NOT an image block.
+    blocks = markdown_to_notion_blocks("see ![x](y.png) inline")
+    assert blocks[0]["type"] == "paragraph"
+
+
 def run_all():
     tests = [
         test_rich_text_plain,
@@ -447,6 +469,9 @@ def run_all():
         test_rich_text_relative_link_becomes_plain,
         test_rich_text_absolute_link_preserved,
         test_no_literal_markers_leak,
+        test_image_remote_external,
+        test_image_local_external_shape_preupload,
+        test_image_only_when_standalone,
     ]
     for t in tests:
         print(f"\n{t.__name__}")