Fix clean-build release pipeline + null-return interface getters

.github/workflows/emu-build-all-win.yml

@@ -48,7 +48,11 @@ jobs:
       - name: "Checkout branch"
         uses: actions/checkout@v4
         with:
-          clean: false
+          # clean:true so stale generated/build artifacts from prior runs (e.g. a
+          # removed base_gcmessages.pb.* or old steam_api DLLs) can't get compiled,
+          # linked, or shipped. Deps live in C:\gbe-deps (junctioned later), so a
+          # clean checkout doesn't force a deps rebuild.
+          clean: true
 
       - name: "Setup MSBuild"
         uses: microsoft/setup-msbuild@v2
@@ -83,7 +87,11 @@ jobs:
         shell: cmd
         working-directory: "${{ github.workspace }}"
         run: |
-          "${{env.THIRD_PARTY_BASE_DIR}}\common\win\premake\premake5.exe" --file=premake5.lua --genproto --emubuild=${{ github.sha }} --dosstub --winrsrc --winsign --os=windows vs2022
+          rem No --dosstub/--winsign: that post-build tooling (file_dos_stub_x32.exe /
+          rem sign_helper.bat) crashes on the 32-bit DLL and removes the just-linked
+          rem output, and the emu DLLs don't need a replaced DOS stub or a code
+          rem signature to function. Keep --winrsrc (version resource) which is fine.
+          "${{env.THIRD_PARTY_BASE_DIR}}\common\win\premake\premake5.exe" --file=premake5.lua --genproto --emubuild=${{ github.sha }} --winrsrc --os=windows vs2022
 
       - name: "Build all targets"
         shell: cmd
@@ -92,6 +100,11 @@ jobs:
           @echo off
           setlocal enabledelayedexpansion
 
+          rem The build job checks out with clean:false, so stale DLLs from a prior
+          rem build linger. Wipe the release output dir first so a target that fails
+          rem to build this run cannot ship a leftover DLL (false success).
+          if exist "%GITHUB_WORKSPACE%\build\win\vs2022\release" rmdir /s /q "%GITHUB_WORKSPACE%\build\win\vs2022\release"
+
           for %%P in (api_regular api_experimental steamclient_experimental_stub steamclient_experimental steamclient_experimental_loader steamclient_experimental_extra lib_game_overlay_renderer lib_steamnetworkingsockets tool_lobby_connect tool_generate_interfaces) do (
             for %%A in (x64 Win32) do (
               echo === Building %%P [%%A release] ===
@@ -104,6 +117,33 @@ jobs:
           msbuild /nologo /t:lib_steam_old /m /v:m /p:Configuration=release,Platform=Win32 gbe.sln
           if errorlevel 1 echo Warning: lib_steam_old Win32 release build failed
 
+          rem Per-target failures above are warn-only (e.g. signing of a dev-only tool,
+          rem or lib_steam_old). Don't let them abort the job here; the next step gates
+          rem the release on the actual shippable DLLs existing.
+          exit /b 0
+
+      - name: "Verify shippable DLLs built"
+        shell: cmd
+        working-directory: "${{ github.workspace }}"
+        run: |
+          setlocal enabledelayedexpansion
+          set "OUT=%GITHUB_WORKSPACE%\build\win\vs2022\release"
+          set "MISSING="
+          rem premake emits 32-bit to the x86 dir (and 64-bit to x64).
+          for %%F in (
+            "regular\x64\steam_api64.dll"
+            "regular\x86\steam_api.dll"
+            "experimental\x64\steam_api64.dll"
+            "experimental\x86\steam_api.dll"
+          ) do (
+            if exist "%OUT%\%%~F" ( echo OK: %%~F ) else ( echo MISSING: %%~F & set "MISSING=1" )
+          )
+          if defined MISSING (
+            echo One or more shippable steam_api DLLs are missing - failing the build.
+            exit /b 1
+          )
+          echo All shippable steam_api DLLs present.
+
       - name: "Package build (release)"
         shell: cmd
         working-directory: "${{ github.workspace }}"

.github/workflows/emu-deps-win.yml

@@ -2,7 +2,19 @@ name: "Emu third-party dependencies (Windows)"
 
 on:
   workflow_call:
+    inputs:
+      force_rebuild:
+        description: "Wipe the local deps cache and rebuild from scratch"
+        required: false
+        type: boolean
+        default: false
   workflow_dispatch:
+    inputs:
+      force_rebuild:
+        description: "Wipe the local deps cache and rebuild from scratch"
+        required: false
+        type: boolean
+        default: false
 
 permissions:
   contents: "write"
@@ -23,12 +35,24 @@ jobs:
         id: "local-deps-check"
         shell: cmd
         run: |
-          if exist "%LOCAL_DEPS_DIR%\vs2022\protobuf\install64" (
+          if /I "${{ inputs.force_rebuild }}"=="true" (
+            echo Force rebuild requested - wiping %LOCAL_DEPS_DIR%\vs2022
+            if exist "%LOCAL_DEPS_DIR%\vs2022" rmdir /s /q "%LOCAL_DEPS_DIR%\vs2022"
+          )
+          rem Require markers from multiple deps, not just protobuf: a partial cache
+          rem (e.g. protobuf present but zlibstatic.lib missing) used to pass this
+          rem check and never refresh, which broke api_regular linking. Treat a
+          rem missing critical lib as "needs rebuild".
+          set DEPS_OK=1
+          if not exist "%LOCAL_DEPS_DIR%\vs2022\protobuf\install64" set DEPS_OK=0
+          if not exist "%LOCAL_DEPS_DIR%\vs2022\zlib\install64\lib\zlibstatic.lib" set DEPS_OK=0
+          if not exist "%LOCAL_DEPS_DIR%\vs2022\sdl\install64\lib\SDL3-static.lib" set DEPS_OK=0
+          if "%DEPS_OK%"=="1" (
             echo deps_exist=true>>%GITHUB_OUTPUT%
-            echo Deps already exist at %LOCAL_DEPS_DIR%
+            echo Deps already exist and look complete at %LOCAL_DEPS_DIR%
           ) else (
             echo deps_exist=false>>%GITHUB_OUTPUT%
-            echo Deps not found, will build
+            echo Deps missing or incomplete, will build
           )
 
       - name: "Checkout branch"
@@ -60,6 +84,14 @@ jobs:
           ref: "third-party/deps/common"
           path: "${{env.THIRD_PARTY_BASE_DIR}}/deps/common"
 
+      - name: "Enable long paths (best-effort)"
+        if: steps.local-deps-check.outputs.deps_exist != 'true'
+        shell: cmd
+        run: |
+          rem Deeply nested dep build paths (abseil etc.) can exceed Windows' 260-char
+          rem MAX_PATH. Best-effort enable long paths; ignore failure if not admin.
+          reg add "HKLM\SYSTEM\CurrentControlSet\Control\FileSystem" /v LongPathsEnabled /t REG_DWORD /d 1 /f || ver > nul
+
       - name: "Build deps"
         if: steps.local-deps-check.outputs.deps_exist != 'true'
         shell: cmd