From 885b0a3db334c2f7ae4b87a4ef6b7c0e8db103de Mon Sep 17 00:00:00 2001
From: clockwork-labs-bot <clockwork-labs-bot@users.noreply.github.com>
Date: Wed, 25 Feb 2026 20:24:33 -0500
Subject: [PATCH] Fix spacetime dev using debug builds for client process

detect_client_command() returned 'cargo run' for Rust clients and
'dotnet run' for C# clients, which default to debug builds. The server
module was already built with --release, creating a mismatch.

Change to 'cargo run --release' and 'dotnet run --configuration Release'
so the client process matches the server module's release build.

Also update for_client_lang() which generates the same commands for
spacetime.json configs.
---
 crates/cli/src/spacetime_config.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/crates/cli/src/spacetime_config.rs b/crates/cli/src/spacetime_config.rs
index 2d17e2eff3d..29137f75a11 100644
--- a/crates/cli/src/spacetime_config.rs
+++ b/crates/cli/src/spacetime_config.rs
@@ -866,8 +866,8 @@ impl SpacetimeConfig {
     pub fn for_client_lang(client_lang: &str, package_manager: Option<PackageManager>) -> Self {
         let run_command = match client_lang.to_lowercase().as_str() {
             "typescript" => package_manager.map(|pm| pm.run_dev_command()).unwrap_or("npm run dev"),
-            "rust" => "cargo run",
-            "csharp" | "c#" => "dotnet run",
+            "rust" => "cargo run --release",
+            "csharp" | "c#" => "dotnet run --configuration Release",
             _ => "npm run dev", // default fallback
         };
         Self {
@@ -1161,14 +1161,14 @@ pub fn detect_client_command(project_dir: &Path) -> Option<(String, Option<Packa
 
     // Rust: Cargo.toml
     if project_dir.join("Cargo.toml").exists() {
-        return Some(("cargo run".to_string(), None));
+        return Some(("cargo run --release".to_string(), None));
     }
 
     // C#: .csproj file
     if let Ok(entries) = fs::read_dir(project_dir) {
         for entry in entries.flatten() {
             if entry.path().extension().is_some_and(|e| e == "csproj") {
-                return Some(("dotnet run".to_string(), None));
+                return Some(("dotnet run --configuration Release".to_string(), None));
             }
         }
     }