From 1958cdda1da946b5c0875b55442a56e06796b21f Mon Sep 17 00:00:00 2001
From: highlander <highlander@keepkey.com>
Date: Sat, 22 Aug 2026 17:16:57 -0500
Subject: [PATCH] feat(protocol): report taproot support in Features

Adds Features.supports_taproot (field 27) so a host can detect P2TR
capability directly rather than inferring it from a firmware version
string, which breaks whenever the feature is retargeted to a different
release.

Field number and wording match the same field in #112, so the two do not
conflict when that lands.
---
 messages.proto | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/messages.proto b/messages.proto
index ca35898c..858ccf88 100644
--- a/messages.proto
+++ b/messages.proto
@@ -293,6 +293,11 @@ message Features {
   optional bool wipe_code_protection = 25;
   optional uint32 auto_lock_delay_ms =
       26; // Current auto lock delay (in milliseconds)
+  optional bool supports_taproot =
+      27; // Firmware can derive and spend P2TR (BIP-86 / BIP-340 / BIP-341).
+          // Lets a host detect taproot support directly instead of inferring
+          // it from a firmware version, which breaks whenever the feature is
+          // retargeted to a different release.
 }
 
 /**