ci: build only the architectures this group runs

Windows arm64 doubled the slowest job in the matrix — two Electron
distributions downloaded, native modules compiled twice — and nobody here runs
Windows on ARM. Linux arm64 went for the same reason.

Removing arm64 also retires the fpm step: electron-builder's bundled fpm is
x86_64-only and failed on the arm64 runner, which is the only reason a native
fpm was installed (ruby, ruby-dev, build-essential and a gem with native
extensions, on every run). On an x86_64 runner the bundled one works.

Matrix is now Windows x64 and Linux x64.

.github/workflows/release.yml

@@ -14,6 +14,13 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          # Fork: só as plataformas que o grupo usa. Windows arm64 saiu porque
+          # dobrava o job mais lento (duas distribuições do Electron, módulos
+          # nativos compilados duas vezes) e ninguém roda Windows em ARM.
+          # Linux arm64 saiu pelo mesmo motivo. Com o arm64 fora, o passo que
+          # instalava o fpm nativo perdeu a razão de existir: ele só era
+          # necessário porque o fpm embutido no electron-builder é x86_64 e
+          # falhava no runner arm64.
           # macOS removido neste fork: ninguém do grupo usa, e o runner macOS
           # é cobrado a 10x num repositório privado — era a plataforma mais cara
           # da matriz, compilada em toda tag para zero usuários.
@@ -23,13 +30,10 @@ jobs:
           # cannot detect ("unknown version undefined") when compiling
           # uiohook-napi in postinstall.
           - os: windows-2022
-            args: --win --x64 --arm64
+            args: --win --x64
           # Linux — x64 on x64 runner
           - os: ubuntu-latest
             args: --linux --x64
-          # Linux — arm64 on arm64 runner
-          - os: ubuntu-24.04-arm
-            args: --linux --arm64
 
     runs-on: ${{ matrix.os }}
 
@@ -59,17 +63,6 @@ jobs:
             libxkbcommon-dev libxkbcommon-x11-dev libxkbfile-dev \
             libxrandr-dev libxinerama-dev libx11-xcb-dev
 
-      - name: Install fpm for .deb packaging
-        if: runner.os == 'Linux'
-        # electron-builder bundles an x86_64-only fpm; on the arm64 runner it
-        # aborts the .deb target with "cannot execute binary file: Exec format
-        # error". Install fpm natively and set USE_SYSTEM_FPM (below) so both
-        # arches package their .deb with a host-native fpm. ruby-dev + make are
-        # needed for fpm's native gem dependencies.
-        run: |
-          sudo apt-get install -y ruby ruby-dev build-essential
-          sudo gem install --no-document fpm
-
       - name: Setup pnpm
         uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0
         with:
@@ -97,7 +90,3 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CSC_IDENTITY_AUTO_DISCOVERY: "false"
-          # Use the host-native fpm installed above instead of electron-builder's
-          # bundled x86_64 fpm (which can't run on the arm64 runner). No-op on
-          # macOS/Windows, which don't build .deb.
-          USE_SYSTEM_FPM: "true"