diff --git a/lyra/poker.py b/lyra/poker.py
index da42314..860ca2a 100644
--- a/lyra/poker.py
+++ b/lyra/poker.py
@@ -1298,12 +1298,17 @@ def hud(session_id: int | None = None) -> dict | None:
         for h in list_hands(sid)
     ]
 
-    # Notes she jotted during this session: journal/note entries since it started.
+    # Notes she jotted *during* this session: journal/note entries inside its
+    # [started_at, ended_at] window. A live session has no end yet, so it stays
+    # open-ended; without the upper bound a closed session would keep absorbing
+    # every note she writes long after it's over.
     started = s.get("started_at") or ""
+    ended = s.get("ended_at") or None
     notes = [
         {"created_at": j["created_at"], "kind": j["kind"], "content": j["content"]}
         for j in memory.list_journal(kinds=("note", "journal"))
         if (j["created_at"] or "") >= started
+        and (ended is None or (j["created_at"] or "") <= ended)
     ][:20]
 
     stats = session_stats(sid)
diff --git a/tests/test_poker.py b/tests/test_poker.py
index 95ef400..36a979a 100644
--- a/tests/test_poker.py
+++ b/tests/test_poker.py
@@ -18,6 +18,27 @@ def lyra(tmp_path, monkeypatch):
     return poker
 
 
+def test_hud_notes_scoped_to_session_window(lyra):
+    poker = lyra
+    from lyra import memory
+    sid = poker.start_session(venue="Meadows", stakes="1/3", buy_in=300)
+    s = poker.get_session(sid)
+    started = s["started_at"]
+    # A note written mid-session (>= started, before it ends) belongs to it.
+    conn = memory._connection()
+    with conn:
+        conn.execute("INSERT INTO journal (created_at, kind, content) VALUES (?,?,?)",
+                     (started, "note", "villain 3 overfolds turn"))
+    poker.end_session(cash_out=540, session_id=sid)
+    # A note written well after the session closed must NOT show up on it.
+    with conn:
+        conn.execute("INSERT INTO journal (created_at, kind, content) VALUES (?,?,?)",
+                     ("2999-01-01T00:00:00+00:00", "note", "thought from the far future"))
+    contents = [n["content"] for n in poker.hud(sid)["notes"]]
+    assert "villain 3 overfolds turn" in contents        # inside the window
+    assert "thought from the far future" not in contents  # after ended_at
+
+
 def test_session_lifecycle_and_net(lyra):
     poker = lyra
     sid = poker.start_session(venue="Meadows", stakes="1/3", buy_in=400)