Use native Codex steering and transcript deletion

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

@@ -140,6 +140,8 @@ data class SessionSummary(
      * still there, and re-importing is not a restore.
      */
     val keepsOwnTranscript: Boolean,
+    /** Product whose durable transcript survives an ordinary app deletion. */
+    val ownTranscriptName: String?,
     /** How much the session asks before acting; null when it was never set. */
     val permissionMode: String?,
     /**
@@ -238,6 +240,7 @@ private fun parseSession(session: JSONObject) =
         id = session.getString("id"),
         setup = session.getString("setup"),
         keepsOwnTranscript = session.optBoolean("keepsOwnTranscript", false),
+        ownTranscriptName = session.optString("ownTranscriptName").ifEmpty { null },
         setupName = session.getString("setupName"),
         provider = session.getString("provider"),
         title = session.getString("title"),
@@ -1230,10 +1233,10 @@ fun compactSession(settings: ServerSettings, sessionId: String) {
 /**
  * Removes a session, and optionally the machine's own transcript of the same conversation.
  *
- * [deleteForeign] is the delete this app cannot otherwise reach: Claude Code keeps its own record
- * under `~/.claude/projects`, and leaving it is what makes an ordinary delete recoverable. The
- * server does both halves, and does the unrecoverable one first, so a machine it cannot reach
- * leaves the session exactly where it was rather than half-deleted.
+ * [deleteForeign] is the delete this app cannot otherwise reach: coding CLIs keep their own durable
+ * record, and leaving it is what makes an ordinary delete recoverable. The server does both halves,
+ * and does the unrecoverable one first, so a machine it cannot reach leaves the session exactly
+ * where it was rather than half-deleted.
  */
 fun deleteSession(settings: ServerSettings, sessionId: String, deleteForeign: Boolean = false) {
     val query = if (deleteForeign) "?deleteForeign=true" else ""