From cbbb1750a65bdbe351c11b634e86b585c2fbae0f Mon Sep 17 00:00:00 2001
From: Jeremy Huang <94247773+1jehuang@users.noreply.github.com>
Date: Sun, 31 May 2026 21:17:56 -0700
Subject: [PATCH] Accept set_route as model switch alias

Fixes #295
---
 .../src/protocol_tests/misc_events.rs         | 19 +++++++++++++++++++
 crates/jcode-protocol/src/wire.rs             |  6 +++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/crates/jcode-protocol/src/protocol_tests/misc_events.rs b/crates/jcode-protocol/src/protocol_tests/misc_events.rs
index 9024f4fae..527aa545f 100644
--- a/crates/jcode-protocol/src/protocol_tests/misc_events.rs
+++ b/crates/jcode-protocol/src/protocol_tests/misc_events.rs
@@ -195,6 +195,25 @@ fn test_set_feature_roundtrip() -> Result<()> {
     Ok(())
 }
 
+#[test]
+fn test_set_route_deserializes_as_set_model_compat_alias() -> Result<()> {
+    let decoded = parse_request_json(r#"{"type":"set_route","id":42,"model":"claude-opus-4-5"}"#)?;
+    let Request::SetModel { id, model } = decoded else {
+        return Err(anyhow!(
+            "expected set_route compatibility alias to decode as SetModel"
+        ));
+    };
+    assert_eq!(id, 42);
+    assert_eq!(model, "claude-opus-4-5");
+
+    let encoded = serde_json::to_string(&Request::SetModel {
+        id: 43,
+        model: "gpt-5.5".to_string(),
+    })?;
+    assert!(encoded.contains("\"type\":\"set_model\""));
+    Ok(())
+}
+
 #[test]
 fn test_subscribe_request_roundtrip_preserves_session_takeover_flags() -> Result<()> {
     let req = Request::Subscribe {
diff --git a/crates/jcode-protocol/src/wire.rs b/crates/jcode-protocol/src/wire.rs
index 2fe1d72c0..583b29e1e 100644
--- a/crates/jcode-protocol/src/wire.rs
+++ b/crates/jcode-protocol/src/wire.rs
@@ -159,8 +159,12 @@ pub enum Request {
     #[serde(rename = "refresh_models")]
     RefreshModels { id: u64 },
 
-    /// Set the active model by name
+    /// Set the active model by name.
+    ///
+    /// `set_route` is accepted as a legacy/desktop compatibility alias for
+    /// clients that briefly emitted route-oriented model switch requests.
     #[serde(rename = "set_model")]
+    #[serde(alias = "set_route")]
     SetModel { id: u64, model: String },
 
     /// Set or clear the session-scoped subagent model preference.