Scope the trailing-whitespace and escaping-scan rules, name the totality gap

corpus/README.md

@@ -4,8 +4,7 @@ One directory per contract kind:
 
 - `round-trip/` — `<name>.json` + `<name>.md`: the markdown `adfToMarkdown` must emit for that
   document, byte for byte, and that `markdownToAdf` must read back to it (AGENTS.md §2). Grouped
-  by node family: `commonmark-subset/`, `block-nodes/`, `inline-nodes/`, `opaque-carry/`,
-  `combinations/`.
+  by node family.
 - `normalization/` — `<name>.md` + `<name>.json`: markdown input, and the document
   `markdownToAdf` must build from it. One-way; the markdown is not canonical.
 - `errors/` — `<name>.md`: markdown input that must not convert. A `<name>.error` beside it

corpus/round-trip/commonmark-subset/code-block-trailing-whitespace.json

@@ -0,0 +1,18 @@
+{
+  "content": [
+    {
+      "attrs": {
+        "language": "markdown"
+      },
+      "content": [
+        {
+          "text": "Line one  \nLine two",
+          "type": "text"
+        }
+      ],
+      "type": "codeBlock"
+    }
+  ],
+  "type": "doc",
+  "version": 1
+}

corpus/round-trip/commonmark-subset/code-block-trailing-whitespace.md

@@ -0,0 +1,4 @@
+```markdown
+Line one  
+Line two
+```

corpus/round-trip/commonmark-subset/ordered-list-order.json

@@ -15,6 +15,15 @@
                 }
               ],
               "type": "paragraph"
+            },
+            {
+              "content": [
+                {
+                  "text": "Grade 8.8.",
+                  "type": "text"
+                }
+              ],
+              "type": "paragraph"
             }
           ],
           "type": "listItem"

corpus/round-trip/commonmark-subset/ordered-list-order.md

@@ -1,4 +1,6 @@
 9. Bolt M8
+
+   Grade 8.8.
 10. Nut M8
 
     Zinc-plated.