From e57550a5a2f6c05cc232eec0b1e4ca84ac889195 Mon Sep 17 00:00:00 2001
From: ju6ge <judge@felixrichter.tech>
Date: Sun, 10 May 2026 02:46:18 +0200
Subject: [PATCH] fix: use tagged enum serialization for BatteryError

---
 rust/src/hal/battery.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rust/src/hal/battery.rs b/rust/src/hal/battery.rs
index 2165970..cf12f06 100644
--- a/rust/src/hal/battery.rs
+++ b/rust/src/hal/battery.rs
@@ -38,9 +38,10 @@ pub struct BatteryInfo {
 }
 
 #[derive(Debug, Serialize)]
+#[serde(tag = "kind")]
 pub enum BatteryError {
     NoBatteryMonitor,
-    CommunicationError(String),
+    CommunicationError { message: String },
 }
 
 #[derive(Debug, Serialize)]