Build Discord Presence components on test branch

.github/workflows/build.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - 'main'
       - 'feature/client-tweaks'
+      - 'test/discord-presence'
     tags:
       - 'v*'
   pull_request:
@@ -41,6 +42,22 @@ jobs:
           pyinstaller --version
           python -m pip show pyinstaller pyinstaller-hooks-contrib
 
+      - name: Configure x86 MSVC
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: x86
+
+      - name: Build Discord Presence native components
+        shell: pwsh
+        run: |
+          New-Item -ItemType Directory -Force -Path "Payload" | Out-Null
+          cl /nologo /O2 /MT /W3 /LD "native\DiscordPresence\DiscordPresence.c" /Fe:"Payload\DiscordPresence.dll" /link /INCREMENTAL:NO
+          if ($LASTEXITCODE -ne 0) { throw "DiscordPresence.dll build failed" }
+          cl /nologo /O2 /MT /W3 "native\DiscordPresence\DiscordPresenceLauncher.c" /Fe:"Payload\DiscordPresence.exe" /link /SUBSYSTEM:WINDOWS /INCREMENTAL:NO
+          if ($LASTEXITCODE -ne 0) { throw "DiscordPresence.exe build failed" }
+          if (-not (Test-Path "Payload\DiscordPresence.dll")) { throw "DiscordPresence.dll missing" }
+          if (-not (Test-Path "Payload\DiscordPresence.exe")) { throw "DiscordPresence.exe missing" }
+
       - name: Syntax check
         run: python -m py_compile setup_tool.py setup_tool_dynamic.py remote_packages.py tests/test_safety.py