Merge master into the idle unload

Two conflicts, both where the local cleanup grew a second thing at once.

cleanup._local now passes the server's context alongside the timeout, and this
branch wrapped that same call in the busy() hold; the call takes both.

FakeServer gained a `context` attribute on master and a `held` counter here.

dikte/i18n.py

@@ -979,6 +979,10 @@ TR = {
     "“Off”.":
         "Temizleme modeli bütün yanıtını düşünmeye harcadı. Düşünme'yi "
         "“Kapalı” yap.",
+    "The cleanup model was cut off before it finished.":
+        "Temizleme modeli bitiremeden kesildi.",
+    "The model was cut off before it finished.":
+        "Model bitiremeden kesildi.",
 
     # --- this pass's new messages ---------------------------------------
     "Audio recorder stopped before receiving sound":