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/kotlin/com/example/aiapp/UsageDialog.kt

@@ -15,20 +15,11 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import java.time.OffsetDateTime
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
 
 /**
  * Window bars for the account's rate limits, with reset times.
@@ -41,23 +32,7 @@ import kotlinx.coroutines.withContext
  * handles that itself.
  */
 @Composable
-fun UsageDialog(settings: ServerSettings, onDismiss: () -> Unit) {
-    val scope = rememberCoroutineScope()
-    var state by remember { mutableStateOf<LoadState<List<UsageSnapshot>>>(LoadState.Loading) }
-
-    fun refresh() {
-        state = LoadState.Loading
-        scope.launch {
-            state =
-                try {
-                    withContext(Dispatchers.IO) { LoadState.Loaded(fetchUsage(settings)) }
-                } catch (e: ApiException) {
-                    LoadState.failed(e)
-                }
-        }
-    }
-    LaunchedEffect(Unit) { refresh() }
-
+fun UsageDialog(feed: UsageFeed, onDismiss: () -> Unit) {
     // A plain Dialog rather than an AlertDialog, for the spacing alone. AlertDialog fixes the
     // gaps between its title, its content and its buttons at sizes meant for a sentence of prose
     // and a decision; this is a dense read-out, and those gaps left a band of empty dialog above
@@ -84,7 +59,14 @@ fun UsageDialog(settings: ServerSettings, onDismiss: () -> Unit) {
                         style = MaterialTheme.typography.headlineSmall,
                         modifier = Modifier.weight(1f),
                     )
-                    GlyphButton(REFRESH_GLYPH, "Refresh usage", { refresh() })
+                    // A spinner in the button's place while the answer is on its way, since the
+                    // numbers under it stay put during a refresh -- without it, pressing refresh
+                    // over an unchanged read-out looks like a button that does nothing.
+                    if (feed.refreshing) {
+                        GlyphSpinner("Refreshing usage")
+                    } else {
+                        GlyphButton(REFRESH_GLYPH, "Refresh usage", feed.refresh)
+                    }
                 }
                 Spacer(Modifier.height(8.dp))
                 // Scrolls rather than being trimmed: a machine can report any number of windows
@@ -92,7 +74,7 @@ fun UsageDialog(settings: ServerSettings, onDismiss: () -> Unit) {
                 // running out of room is silent. `fill = false` so a short read-out keeps a short
                 // dialog instead of stretching to the window.
                 Column(Modifier.weight(1f, fill = false).verticalScroll(rememberScrollState())) {
-                    UsageBody(state)
+                    UsageBody(feed.snapshots)
                 }
                 TextButton(onClick = onDismiss, modifier = Modifier.align(Alignment.End)) {
                     Text("Close")