Prepare text search during media setup and retain query sessions through promotion

README.md

@@ -131,10 +131,11 @@ Once searchi is running:
    **Index folder**.
 2. Start with a filename or words you remember. These searches become
    available as files are indexed.
-3. Let the local search model finish preparing in the background. First
-   setup downloads approximately **865 MB** and needs an internet connection.
-   The app shows its progress; semantic search becomes available when setup
-   and indexing finish.
+3. Let the local search model prepare in the background. First setup downloads
+   approximately **865 MB** and needs an internet connection. Document and code
+   search by meaning can begin once the smaller text model and text index are
+   ready, while the larger media model continues downloading. The app shows
+   progress and keeps text search available if media setup needs a retry.
 4. Describe what you're looking for, select a result and inspect the preview.
    Press **Enter** to open the selected file in its usual application.