Movies and Series: Enter adds, a no longer does

The status bar only ever named Enter, while the hint for searching
releases of a title not in the library said (a). Enter is now the one
key for adding, and the hint says Enter.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -11,7 +11,7 @@ A terminal UI to search for movies and series with [Radarr](https://radarr.video
 - **Trending, most watched, anticipated**: while the search box is empty, Movies and Series show
   lists from [Trakt](https://trakt.tv): trending now, most watched this week, anticipated, popular,
   and the US box office for movies. `[` and `]` switch lists; titles already in your library are
-  ticked, the others can be added right there. Needs a free Trakt client ID (see Configure).
+  ticked, the others can be added right there (Enter). Needs a free Trakt client ID (see Configure).
 - **Interactive search**: list the releases Radarr/Sonarr find (approved or rejected, with reasons),
   sort and filter them (by approval, quality, x265 / x264 / AV1, HDR, Dolby Vision, audio format, language), and grab one. Series: pick a season or a single episode first.
 - **Posters**: the detail panes show the poster at the top right; title, facts, path and plot
@@ -112,7 +112,7 @@ Keep the file private (`chmod 600`); it holds your API keys.
 | `F9` | help |
 | `/` | focus search box |
 | `[`, `]`, `r` (Movies / Series, empty search) | previous / next Trakt list, reload it |
-| `Enter`, `a` | add selected title |
+| `Enter` | add selected title |
 | `i` | interactive release search |
 | `Tab`, `f`, `F`, `/`, `t`, `s`, `d`, `i`/`Enter`, `r` (library) | movies/series list, status filter, file-property filter, text filter, monitor, search, remove, releases/episodes, reload |
 | `[`, `]`, `t`, `u`, `Enter`, `s` (calendar) | week back / forward, today, unmonitored, releases, search |