Default a new session to bypassPermissions

Auto already allows most of what a session does, so the prompts it did
raise were mostly the interruption without the choice -- and on a phone
each one is a round trip to a question card. Measured rather than
assumed: a haiku session spawned this way ran a bare `echo` and a
`sleep` loop with no prompt at all.

The stricter modes stay one tap away in the same picker, which is where
a session that warrants one picks it.

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

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

@@ -67,11 +67,13 @@ fun SpawnScreen(
     var title by remember { mutableStateOf("") }
     var model by remember { mutableStateOf("") }
     var cwd by remember { mutableStateOf("") }
-    // "auto" rather than "manual": on a phone every ask is a round trip to
+    // "bypassPermissions" rather than "auto": on a phone every ask is a
-    // a question card, and answering "allow Bash?" dozens of times per task
+    // round trip to a question card, and answering "allow Bash?" dozens of
-    // is what this app exists to avoid. Manual stays one tap away for a
+    // times per task is what this app exists to avoid. Auto already allows
-    // session that warrants it.
+    // most of what a session does, so what the prompts left were mostly the
-    var permissionMode by remember { mutableStateOf("auto") }
+    // interruption without the choice. The stricter modes stay one tap away
+    // for a session that warrants one.
+    var permissionMode by remember { mutableStateOf("bypassPermissions") }
     var busy by remember { mutableStateOf(false) }
     // Only the spawn's own failure. The fetch's lives in `options`: this
     // one leaves a filled-in form worth keeping, and that one leaves