docs: the Android client

Design §11.3/§11.4/§15 state what is built and what the phone found; the user
guide drops 'no Android client'; CLAUDE.md gains the package's locators and
the lessons casting from a phone taught.

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

1 files changed, 11 insertions, 6 deletions

diff --git a/docs/USERGUIDE.md b/docs/USERGUIDE.md
index d631804..ad51982 100644
--- a/docs/USERGUIDE.md
+++ b/docs/USERGUIDE.md
@@ -392,9 +392,10 @@ resume.
 
 ### Casting to a TV
 
-**Desktop application only.** A film playing in the application can be sent to a
-cast-capable TV or dongle on the same network: *Cast to device* in the player,
-pick one from the list. Devices appear as they answer, usually within a couple
+**The desktop and Android applications.** A film playing in the application can
+be sent to a cast-capable TV or dongle on the same network: *Cast to device* in
+the player, pick one from the list. On a phone, the film goes on playing silently
+on the phone while the TV shows it, and the screen can be turned off. Devices appear as they answer, usually within a couple
 of seconds; the search carries on for a few more, for a TV that is still
 waking up.
 
@@ -967,12 +968,16 @@ Better to know now than to go looking for it:
   is nothing to check a download against and no updates through your
   distribution. Until that ships, take them from the download page and from
   nowhere else.
-- **There is no Android client.** A phone browser works.
+- **The Android application is not released yet.** It works — groups, chat,
+  films, downloads, casting — but is built and installed by hand and signed
+  with a development key, so there is no store page and no update channel. The
+  back button and the lock screen do not drive it yet. A phone browser works
+  too.
 - **A node cannot be hosted on Android**, and is not planned to be.
 - **Hubs do not talk to each other yet.** Everyone in a group needs an account
   on the same hub.
-- **Casting reaches Chromecast devices** from the desktop application. Support
-  for other TV protocols is designed but not built.
+- **Casting reaches Chromecast devices** from the desktop and Android
+  applications. Support for other TV protocols is designed but not built.
 - **Some subtitle tracks cannot be shown** — the ones stored as images rather
   than text, roughly one embedded track in five. Displaying them would need
   text recognition.