Offer Claude sign-in from failed sessions

app/androidApp/src/main/kotlin/com/example/aiapp/SessionScreen.kt

@@ -387,6 +387,9 @@ fun SessionScreen(
     var loadingHistory by remember { mutableStateOf(false) }
     var historyError by remember(address, epoch) { mutableStateOf<String?>(null) }
     var ready by remember { mutableStateOf(false) }
+    // The driver owns recognising provider prose; this screen responds only to its actionable
+    // event.
+    var loginOpen by remember(address) { mutableStateOf(false) }
     // Replies parsed ahead of the rows that draw them; see [ParsedReplies].
     val replies = remember(address) { ParsedReplies() }
     // Keyed like everything else describing one transcript. `rememberLazyListState` saves through
@@ -535,6 +538,7 @@ fun SessionScreen(
                         }
                     status = event.state
                 }
+                if (!isSubagent) loginOpen = authenticationPromptAfter(loginOpen, event)
                 // In order, always: one late event recorded ahead of the backlog would fold a
                 // streamed delta into whatever row happened to be last by then.
                 // Read on the UI thread (the stream below marshals every frame here). This direct
@@ -2061,6 +2065,19 @@ fun SessionScreen(
             )
         }
     }
+    if (loginOpen) {
+        ProviderLoginDialog(
+            settings = settings,
+            machineId = summary.machine,
+            machineName = summary.machineName,
+            provider = summary.provider,
+            onDismiss = { loginOpen = false },
+            onSignedIn = {
+                loginOpen = false
+                usageFeed?.refresh?.invoke()
+            },
+        )
+    }
     if (settingsOpen) {
         // Measured when the dialog opens rather than kept up to date: what the reader is being told
         // is what pressing the button now would discard, and null until the walk of the directory