Fixes from the rest of the live session

- A near miss for abandon ("abort", "cancel", "drop it", ...) in an item's
  thread is asked about, and changes nothing.
- The driver is told only the operator stops or closes an item, so it
  doesn't claim to have done either.
- An issue assigned again after its item closed starts a new item that
  notes the one before (Gitea's timeline gives the assignment time);
  item_for_issue returns the latest item.
- Abandoning an issue Gitea won't close because of open dependencies says
  so, naming them.
- An agreed item isn't offered restate.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPQ14L3LikyefCMFBqEbKE

nisse-dev/src/nisse_dev/loop/items.py

@@ -108,9 +108,12 @@ def item_for_thread(
 def item_for_issue(
     store: StateStore, issue: int, project: str | None = None
 ) -> WorkItem | None:
-    """Any item, open or closed, recorded by this issue (in ``project``,
-    when given): intake never takes an issue twice (D1)."""
-    for item in store.work_items():
-        if loop_of(item).issue == issue and project in (None, item.scope):
-            return item
-    return None
+    """The latest item, open or closed, recorded by this issue (in
+    ``project``, when given): intake takes an issue once, and again only on a
+    fresh assignment after its item closed (D1)."""
+    found = [
+        item
+        for item in store.work_items()
+        if loop_of(item).issue == issue and project in (None, item.scope)
+    ]
+    return found[-1] if found else None