readme: wireless, voice, the Bluetooth or USB audio choice, and updates

README.md

@@ -14,11 +14,11 @@ Gearslip's certificate, and Gearslip can't run in those cars.
 ## What Gearslip is
 
 Gearslip is an Android Auto client for the phone. It speaks the Android Auto protocol
-directly to a car head unit over USB, with no Google software in the path. Gearslip acts
+directly to a car head unit, over USB or wirelessly, with no Google software in the path.
-as a Car App Library host: an app that ships a car interface hands Gearslip a template,
+Gearslip acts as a Car App Library host: an app that ships a car interface hands Gearslip
-and Gearslip renders that template natively on the car screen. Nothing is mirrored from
+a template, and Gearslip renders that template natively on the car screen. Nothing is
-the phone. For apps without a car interface, Gearslip offers a separate screen-sharing
+mirrored from the phone. For apps without a car interface, Gearslip offers a separate
-mode.
+screen-sharing mode.
 
 | | |
 |---|---|
@@ -32,7 +32,7 @@ mode.
 ## Features
 
 - **Phone calls.** Dial from a keypad, or search your contacts, then confirm before the
-  call goes out.
+  call goes out. When a call comes in, answer or decline it on the car screen.
 - **Navigation.** Gearslip hosts real Car App Library map apps on the car screen.
   Organic Maps, OsmAnd, and Flitsmeister work today. Vela runs, with rough
   edges.
@@ -43,6 +43,9 @@ mode.
   doesn't ship a car interface of its own.
 - **Weather and the day ahead.** A dashboard screen shows the week's calendar next to
   the current and coming weather.
+- **Voice.** Tap the mic, or press the talk button on the wheel, and say "navigate to the
+  nearest gas station", "play Daft Punk", or "call Mom". Say "help" for the full list.
+  Speech turns into text on the phone, and nothing you say leaves it.
 - **Messages.** New messages appear as a small card on the car screen. Gearslip reads
   each one aloud, and you reply by voice or with a quick reply. Music pauses while
   Gearslip speaks or listens. Speech runs on the phone, so it needs no Google account.
@@ -55,8 +58,9 @@ mode.
 
 ## Status
 
-- **The connection is wired only, for now.** Plug the phone into the head unit's USB port;
+- **Wired or wireless.** Plug the phone into the car's USB port, or, in a car with wireless
-  Gearslip does not yet offer a wireless option.
+  Android Auto, tap Connect wirelessly and pick the car. Pair the phone with the car over
+  Bluetooth first.
 - **Setup walks you through it.** First launch asks for the Android Auto certificate,
   then one permission at a time, each with a plain reason and an Allow or Skip. A help
   screen inside the car answers anything setup didn't cover.
@@ -70,14 +74,19 @@ mode.
   Gearslip's own player.
 - **Calls use the car's Bluetooth,** as they do in Android Auto. Pair the phone with the
   car to hear calls through its speakers.
-- **Audio reaches the car by capturing playback, not by mirroring the screen.** Android
+- **Music reaches the car over Bluetooth or USB.** Setup asks which. Bluetooth is the
-  shows a screen-share consent dialog for this, even though Gearslip never reads the
+  default: Android never asks for permission, and your map app's voice reaches the car
-  screen; it is the only way an ordinary app can capture another app's audio. The dialog
+  too. USB sounds a little clearer, with no delay, but Android shows a screen-share
-  appears once per drive.
+  consent dialog once per drive. Gearslip never reads the screen; capturing playback is
+  the only way an ordinary app can pass another app's audio along.
 - **Gearslip needs no adb, root, or Shizuku.** Every feature relies on an ordinary
-  Android permission or an on-device consent dialog. The setup guide offers two optional
+  Android permission or an on-device consent dialog. For USB audio, setup offers two
-  adb commands: one removes the audio dialog for good, and the other keeps notifications
+  optional adb commands: one removes the audio dialog for good, and the other keeps
-  visible while audio plays.
+  notifications visible while audio plays.
+- **Updates come from GitHub.** Once a day, Gearslip checks this repository's latest
+  release. When a new version is out, it downloads the APK, checks it against GitHub's
+  SHA-256, and installs it through Android's own installer. Turn off automatic checks in
+  Settings.
 
 ## Usage notes
 
@@ -94,9 +103,8 @@ turn them on, in setup or in Settings.
   anything you type or play.
 - **How phones are counted.** A random number counts each phone once. The server keeps
   only a salted hash of it.
-- **Where they go.** To a Cloudflare Worker, whose code is in
+- **Where they go.** To a Cloudflare Worker. Cloudflare sees your IP address in
-  [stats-worker/](stats-worker/). Cloudflare sees your IP address in delivering a note,
+  delivering a note, as it would for any website; the Worker doesn't store it.
-  as it would for any website; the Worker doesn't store it.
 
 Turn the notes off, and they stop at once.