Read a timeout in units, share one usage answer, and let a tilde mean home

The composer's settings row is outlined bubbles opening round menus, and
the message box is a TextFieldValue so anything put into it without being
typed -- a draft, a share, a slash command -- leaves the cursor at the end.

A tap that puts a text selection away no longer also collapses the card the
text was drawn in: every open and close on the session screen goes through
one guard that spends such a press on the selection.

The usage bar and the usage dialog were two polls of one measurement and
disagreed for up to a minute at a time; they are one feed now, and the
countdown rounds up to the minute in the one place both read.

A working directory typed as ~/repos/ai-app was four literal characters on
the local transport and as an argument on both, so the existence check
refused every home-relative path. It is checked by entering the directory
now, expanded for a local spawn the way the remote shell expands it, and
stored short so the phone draws what somebody would write.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/androidApp/src/main/AndroidManifest.xml

@@ -37,12 +37,20 @@
         <profileable android:shell="true" tools:targetApi="q" />
         <!-- adjustResize (not the system's default pan): the layout handles
              the keyboard itself via imePadding(), so the window must resize
-             rather than slide the top bar off screen. -->
+             rather than slide the top bar off screen.
+
+             stateUnchanged: coming back to the app leaves the keyboard as it
+             was left. The default, stateUnspecified, lets the system decide,
+             and what it decides with a focused message field is to open the
+             keyboard -- so switching away and back covered half the transcript
+             somebody had switched away to compare against. Unchanged rather
+             than hidden, because a keyboard that was up when the app was left
+             is one somebody was in the middle of typing into. -->
         <activity
             android:name=".MainActivity"
             android:exported="true"
             android:launchMode="singleTop"
-            android:windowSoftInputMode="adjustResize"
+            android:windowSoftInputMode="adjustResize|stateUnchanged"
             android:theme="@android:style/Theme.Material.Light.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />