nisse-dev: a settled reply posted top-level is no point to answer either

nisse-review's review of #169: a reply quoting a top-level point, or one
Gitea refused on its line, arrives through list_comments, so answering it
would start the thank-you loop again. Also records what the live Gitea
showed: resolving is per comment, and resolving again is a 204.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J5Utyfzw7gF7UhjRDEtjTk

nisse-dev/tests/test_loop_peers.py

@@ -293,3 +293,20 @@ def test_a_refused_resolve_leaves_the_thread_and_is_tried_again(
     forge.refuse_resolve = False
     agent.watch()
     assert forge.resolved == [11, 12, 13]
+
+
+def test_a_settled_reply_posted_top_level_is_not_a_point(
+    world: dict[str, Any],
+) -> None:
+    """One quoting a top-level point, or Gitea refused on its line: there's
+    no thread to resolve, and answering it would start the loop again."""
+    forge: Forge = world["forge"]
+    agent, _, pr = published(world)
+    forge.comments[pr] = [
+        Comment(
+            15, REVIEWER, f"> nisse-dev:\n> Done.\n\nThanks.\n{SETTLED_MARKER}", "t"
+        )
+    ]
+    agent.watch()
+    loop = loop_of(the_item(world))
+    assert (the_item(world).position, loop.points) == (WAITING, ())