fix(settings): make model downloads explicit and cancel the whole intent (#1006)

* fix(settings): make model downloads explicit and cancel the whole intent

"Use it" on the recommendation card applied a different model than the one
shown, a cancelled or failed apply left the staged model behind so the next
Test Dictation downloaded it, and cancelling a download tore down and then
reloaded the previous model while the dialog waited.

- Recommendation is now passive text, compared by size tier, with a link to
  docs/MODEL_SELECTION.md. The "Use it" button is gone.
- Every Settings download asks first and shows size and source host.
  Declining, cancelling or failing drops the staged model spec and puts the
  pickers back on the saved config.
- Test Dictation refuses a model that is not on disk instead of applying it.
- reconfigure() fetches a missing model before releasing the loaded one, so
  a cancel restores state without reloading or rehashing the old model.
  Cancellation state is reset only when a download claim is taken or ended.
- Follow-layout mode shows the resolved language in the simple Main language
  control, read-only, and simple edits keep the "layout" setting.

Fixes #979
Fixes #980
Fixes #981
Fixes #982
Fixes #985
Fixes #988

* fix(settings): restore follow-layout mode when a model change is declined

* fix(settings): keep follow-layout and dictation consistent during model changes

* style(tests): format follow-layout regression tests

* fix(recognition): skip resume reinit while a model download is running

* fix(recognition): keep a lazy reload pending when resume is skipped during a download

---------

Co-authored-by: Jatin K Malik <jatinkrmalik@gmail.com>

tests/test_recognition_manager_remote_api.py

@@ -747,7 +747,7 @@ class TestHTTPSession(unittest.TestCase):
         session = manager._http_session
 
         with patch.object(manager, "_init_vosk"):
-            manager.reconfigure(engine="vosk")
+            manager.reconfigure(engine="vosk", force_download=False)
 
         session.close.assert_called_once()
         self.assertIsNone(manager._http_session)