merge: tick in-body checkboxes from a domain script

# Conflicts:
#	AGENTS.md

skills/issue/scripts/issue_index.py

@@ -30,6 +30,16 @@ def cell(v):
     return v.replace("|", "\\|") or "—"
 
 
+def progress(body):
+    """`3/7` for a body with checkboxes, "" for one without.
+
+    Counted from the body every time the index is built and stored nowhere —
+    the boxes are the state, and a second copy of it in a metadata field would
+    be wrong by the next edit."""
+    done, total = issue.checkbox_progress(body)
+    return "%d/%d" % (done, total) if total else ""
+
+
 def build(root):
     # An index of a store that is not there is not an empty index, it is a bad
     # path. Raising beats writing INDEX.md into a directory nobody asked for.
@@ -42,6 +52,7 @@ def build(root):
         rows.append({
             "id": i,
             "state": cell(iss.state),
+            "progress": progress(iss.body),
             "type": cell(iss.type),
             "labels": cell(rest),
             "title": cell(iss.title),
@@ -57,13 +68,16 @@ def build(root):
            "Every issue this project knows about. `origin: local` means it "
            "exists nowhere else — a complete state, not a pending one. Any "
            "other value names the tracker it also lives in; the handle is in "
-           "the file. Rebuild with `issue_index.py`.", ""]
+           "the file. `progress` counts the body's checkboxes, ticked over "
+           "total, and is blank for an issue that has none — read off the "
+           "body at build time, stored nowhere. Rebuild with `issue_index.py`; "
+           "tick a box with `issue_ac.py`.", ""]
     if rows:
-        out += ["| id | state | type | labels | title | milestone | depends | origin |",
-                "|---|---|---|---|---|---|---|---|"]
-        out += ["| [%s](%s.md) | %s | %s | %s | %s | %s | %s | %s |" % (
-            r["id"], r["id"], r["state"], r["type"], r["labels"], r["title"],
-            r["milestone"], r["depends"], r["origin"]) for r in rows]
+        out += ["| id | state | progress | type | labels | title | milestone | depends | origin |",
+                "|---|---|---|---|---|---|---|---|---|"]
+        out += ["| [%s](%s.md) | %s | %s | %s | %s | %s | %s | %s | %s |" % (
+            r["id"], r["id"], r["state"], r["progress"], r["type"], r["labels"],
+            r["title"], r["milestone"], r["depends"], r["origin"]) for r in rows]
     else:
         out.append("_empty_")