diff --git a/planfile/api/server.py b/planfile/api/server.py
index 30b6563..948f18c 100644
--- a/planfile/api/server.py
+++ b/planfile/api/server.py
@@ -509,9 +509,12 @@ def _bounded_stale_index_response(
     offset: int,
     limit: int | None,
     view: Literal["full", "operational", "summary"],
+    allow_unbounded_summary: bool = False,
 ) -> Response | None:
     """Serve a recent, coherent projection while its source index is repaired."""
-    if sprint != "all" or limit is None or view == "full":
+    archive_queue = sprint == "all" and limit is not None
+    legacy_summary = allow_unbounded_summary and view == "summary"
+    if view == "full" or not (archive_queue or legacy_summary):
         return None
     index = pf.store._sqlite_ticket_index()
     if not index.has_fresh_snapshot(_INDEX_REPAIR_STALE_WINDOW_SECONDS):
@@ -557,6 +560,7 @@ def _ticket_list_response(
     limit: int | None,
     view: Literal["full", "operational", "summary"] = "full",
     allow_stale: bool = False,
+    allow_index_stale: bool = False,
 ) -> Response:
     # FastAPI runs this sync endpoint in a worker pool. Serialize cache misses so
     # a burst of websocket-driven dashboard refreshes builds one 5+ MB response,
@@ -670,6 +674,7 @@ def _ticket_list_response(
                         offset=offset,
                         limit=limit,
                         view=view,
+                        allow_unbounded_summary=allow_stale or allow_index_stale,
                     )
                     if stale_index_response is not None:
                         return stale_index_response
@@ -759,6 +764,7 @@ def list_tickets(
         limit=limit,
         view=effective_view,
         allow_stale=browser_client,
+        allow_index_stale=legacy_unbounded_request,
     )
 
 
diff --git a/tests/test_sqlite_ticket_index.py b/tests/test_sqlite_ticket_index.py
index a1375a1..1815cad 100644
--- a/tests/test_sqlite_ticket_index.py
+++ b/tests/test_sqlite_ticket_index.py
@@ -405,6 +405,38 @@ def test_stale_archive_queue_reads_use_recent_index_without_query_cache(
     assert pf.store.ticket_index_status()["current"] is False
 
 
+def test_legacy_archive_dashboard_uses_recent_current_index_without_cache(
+    tmp_path, monkeypatch
+):
+    pf = Planfile(str(tmp_path))
+    _disable_archive(pf)
+    ticket = pf.create_ticket(name="Last known good dashboard item")
+    pf.store.configure_ticket_index(True)
+    sprint_file = pf.store._sprint_file("current")
+    data = yaml.safe_load(sprint_file.read_text(encoding="utf-8"))
+    data["sprint"]["tickets"][ticket.id]["name"] = "New durable value"
+    sprint_file.write_text(yaml.safe_dump(data, sort_keys=False), encoding="utf-8")
+    mirror_path(sprint_file).unlink(missing_ok=True)
+    monkeypatch.setattr(server, "get_planfile", lambda: pf)
+    monkeypatch.setattr(
+        pf,
+        "list_tickets",
+        lambda **_kwargs: (_ for _ in ()).throw(
+            AssertionError("legacy request parsed durable sprint")
+        ),
+    )
+    server._TICKET_LIST_RESPONSE_CACHE.clear()
+    server._TICKET_LIST_LATEST.clear()
+    client = TestClient(server.app)
+
+    response = client.get("/tickets?sprint=all")
+
+    assert response.status_code == 200
+    assert response.json()[0]["name"] == "Last known good dashboard item"
+    assert response.headers["X-Planfile-View"] == "summary"
+    assert response.headers["X-Planfile-Index-State"] == "stale"
+
+
 def test_expired_stale_archive_index_remains_fail_closed(tmp_path, monkeypatch):
     pf = Planfile(str(tmp_path))
     _disable_archive(pf)