From 9b31ffd76b245783982d4b2ae692b7a58118406a Mon Sep 17 00:00:00 2001
From: Alexa <53471801+Alexa-RR@users.noreply.github.com>
Date: Fri, 19 Jun 2026 23:58:05 +0300
Subject: [PATCH] launcher: fix Steamless download 404 (correct asset filename)

The 'Unlock Rec Room from Steam' step built the release URL as
Steamless.v3.1.0.5.zip, but the actual GitHub asset is named
Steamless.v3.1.0.5.-.by.atom0s.zip. Same tag, wrong filename, so
the download 404'd. Correct the asset name in ZipUrl.
---
 launcher/Backend/SteamlessInstaller.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/launcher/Backend/SteamlessInstaller.cs b/launcher/Backend/SteamlessInstaller.cs
index 9bd7dc4..d4ae3e2 100644
--- a/launcher/Backend/SteamlessInstaller.cs
+++ b/launcher/Backend/SteamlessInstaller.cs
@@ -22,9 +22,12 @@ namespace DorkNet.Launcher.Backend;
 public static class SteamlessInstaller
 {
     private const string PinnedVersion = "v3.1.0.5";
+    // Upstream names the asset "Steamless.{ver}.-.by.atom0s.zip" — NOT
+    // "Steamless.{ver}.zip". Getting this wrong is a 404 at the
+    // "Unlock Rec Room from Steam" step.
     private const string ZipUrl =
         "https://github.com/atom0s/Steamless/releases/download/" +
-        PinnedVersion + "/Steamless." + PinnedVersion + ".zip";
+        PinnedVersion + "/Steamless." + PinnedVersion + ".-.by.atom0s.zip";
 
     private static readonly HttpClient Http = new()
     {