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

docs/Development-Plan.md

@@ -693,7 +693,8 @@ of earlier points, replies on threads, the round cap and its reset, `stop` and
   change). A settled reply carries `<!-- nisse-review: settled -->`. Being
   read-only (R3), the reviewer can't resolve the thread, so the PR's author
   does: nisse-dev resolves every comment on that thread's line when it next
-  watches the PR and takes the settled reply as no point to answer;
+  watches the PR and takes the settled reply as no point to answer (nor one
+  posted top-level, which has no thread to resolve);
   `scripts/resolve_settled.py` does the same for PRs made by hand.
 - **Sign-off:** `sign_off` posts a short review when there is nothing to raise;
   while it stays happy, a later review offers `still_happy`, which posts nothing

nisse-core/src/nisse_core/gitea.py

@@ -97,7 +97,9 @@ SETTLED_MARKER = "<!-- nisse-review: settled -->"
 
 def to_resolve(notes: list[ReviewNote]) -> list[int]:
     """The ids of the unresolved line comments in threads a settled reply
-    closed: every comment on that path:line, as Gitea groups a thread."""
+    closed: every comment on that path:line, as Gitea groups a thread.
+    Gitea resolves one comment at a time (seen on 28.2: the rest of the
+    thread still reports no resolver), and resolving one again is a 204."""
     settled = {
         n.where for n in notes if n.key.startswith("line-") and SETTLED_MARKER in n.body
     }

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

@@ -1111,6 +1111,8 @@ class LoopAgent:
                 loop = replace(loop, comments=comment.id)
                 if comment.author == self._account:
                     continue  # its own replies
+                if SETTLED_MARKER in comment.body:
+                    continue  # a settled reply posted top-level: nothing to answer
                 if comment.author not in self._gitea_operators:
                     point = f"c{comment.id}"
                     loop = self._peer_point(

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, ())