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/ToolInput.kt

@@ -31,8 +31,8 @@ data class ToolInput(
     /** The tool's own one-line summary, when it wrote one. */
     val description: String?,
     /**
-     * How long the call may take, as the tool expressed it. Shown apart because it is a limit on
-     * the call rather than part of what the call does.
+     * How long the call may take, in the largest units it fits ([formatMillis]). Shown apart
+     * because it is a limit on the call rather than part of what the call does.
      */
     val timeout: String?,
     /** Everything else, as `name: value` lines. Never dropped. */
@@ -84,7 +84,7 @@ fun parseToolInput(tool: String, input: String): ToolInput {
     val description = DESCRIPTIONS.firstNotNullOfOrNull {
         json.optString(it).takeIf { v -> v.isNotBlank() }
     }
-    val timeout = json.optString("timeout").takeIf { it.isNotBlank() }
+    val timeout = json.optString("timeout").takeIf { it.isNotBlank() }?.let { formatMillisText(it) }
     val rest =
         json
             .keys()