ci: build on GitHub, publish updates from Gitea

GitHub stays the build machine — it has the Windows runners the native audio
module needs — but the update feed moves to this fork's own Gitea.

The GitHub repository is private, and electron-updater against a private GitHub
repo needs a token inside the shipped app, which is a leaked token. Gitea
serves release assets to anyone, so the installer carries no credential. The
flow was verified end to end against the live instance before writing this:
create release, upload asset, download anonymously.

The release tag is fixed at 'latest' because electron-updater fetches
latest.yml before it knows which version exists, so the URL cannot carry a
version; CI replaces that release's assets each publish. electron-builder runs
with --publish never since it cannot upload to Gitea, but still emits the
latest.yml the updater reads.

Needs a GITEA_TOKEN secret on the GitHub repository.

.github/workflows/publish-gitea.yml

@@ -0,0 +1,152 @@
+# Compila no GitHub, publica no Gitea.
+#
+# O GitHub entra só como máquina de build — é dele que vêm os runners Windows
+# de que o módulo nativo de áudio precisa. A distribuição fica no Gitea, que
+# serve os arquivos a qualquer um: assim o electron-updater não precisa de
+# credencial embutida no app, o que aconteceria com um repositório privado no
+# GitHub.
+name: Publicar no Gitea
+
+on:
+  push:
+    tags: ['v*']
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Tag a publicar (ex. v1.1.0)
+        required: true
+        type: string
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-2022
+            args: --win --x64
+          - os: ubuntu-latest
+            args: --linux --x64
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+
+      - name: Install Linux build dependencies
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libx11-dev libxtst-dev libxt-dev \
+            libxkbcommon-dev libxkbcommon-x11-dev libxkbfile-dev \
+            libxrandr-dev libxinerama-dev libx11-xcb-dev
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0
+        with:
+          version: 10.34.3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+        with:
+          node-version: 20
+          cache: pnpm
+
+      - name: Cache Electron binaries
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/electron
+            ~/.cache/electron-builder
+            ~\AppData\Local\electron\Cache
+            ~\AppData\Local\electron-builder\Cache
+          key: electron-cache-${{ runner.os }}-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: electron-cache-${{ runner.os }}-
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build shared package
+        run: pnpm --filter @backspace/shared build
+
+      # O postinstall termina em `|| console.warn` para quem não tem ferramentas
+      # de build. No CI isso esconde falha: o instalador sairia sem captura de
+      # áudio do sistema e ninguém saberia. Verifica-se o resultado.
+      - name: Verify native audio module compiled
+        if: runner.os == 'Windows'
+        shell: bash
+        run: |
+          found=$(find node_modules/.pnpm -path '*electron-native-screenshare*' -name '*.node' | head -5)
+          [ -n "$found" ] || { echo "::error::sem .node compilado — instalador sairia sem áudio do sistema"; exit 1; }
+          echo "$found"
+
+      - name: Compile desktop TypeScript
+        working-directory: packages/desktop
+        run: pnpm exec tsc
+
+      # --publish never: o electron-builder não sabe enviar para o Gitea. Ele
+      # gera os instaladores e o latest.yml (o índice que o app consulta), e o
+      # passo seguinte faz o upload.
+      - name: Build installers
+        working-directory: packages/desktop
+        run: pnpm exec electron-builder ${{ matrix.args }} --publish never
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: "false"
+
+      - name: Upload to Gitea release
+        shell: bash
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+          GITEA_API: https://git.resenha.website/api/v1/repos/devsyncwrld/backspace
+          TAG: latest
+        run: |
+          set -euo pipefail
+          if [ -z "${GITEA_TOKEN:-}" ]; then
+            echo "::error::segredo GITEA_TOKEN não configurado no repositório"
+            exit 1
+          fi
+
+          # A release `latest` é recriada a cada publicação: o electron-updater
+          # busca latest.yml antes de saber qual versão existe, então a URL não
+          # pode conter número de versão.
+          ID=$(curl -sf -H "Authorization: token $GITEA_TOKEN" \
+                "$GITEA_API/releases/tags/$TAG" | python3 -c \
+                "import json,sys;print(json.load(sys.stdin).get('id',''))" 2>/dev/null || true)
+
+          if [ -n "$ID" ]; then
+            echo "release existente ($ID) — removendo anexos desta plataforma"
+            curl -sf -H "Authorization: token $GITEA_TOKEN" "$GITEA_API/releases/$ID/assets" \
+              | python3 -c "import json,sys;[print(a['id'],a['name']) for a in json.load(sys.stdin)]" \
+              | while read -r aid aname; do
+                  case "$aname" in
+                    *.exe|*.AppImage|*.deb|latest*.yml)
+                      curl -s -o /dev/null -X DELETE -H "Authorization: token $GITEA_TOKEN" \
+                        "$GITEA_API/releases/$ID/assets/$aid" ;;
+                  esac
+                done
+          else
+            ID=$(curl -sf -X POST -H "Authorization: token $GITEA_TOKEN" \
+                  -H 'Content-Type: application/json' \
+                  -d "{\"tag_name\":\"$TAG\",\"name\":\"Última versão\",\"body\":\"Instaladores publicados automaticamente pelo CI.\"}" \
+                  "$GITEA_API/releases" | python3 -c "import json,sys;print(json.load(sys.stdin)['id'])")
+            echo "release criada: $ID"
+          fi
+
+          shopt -s nullglob
+          sent=0
+          for f in packages/desktop/dist-electron/*.exe \
+                   packages/desktop/dist-electron/*.AppImage \
+                   packages/desktop/dist-electron/*.deb \
+                   packages/desktop/dist-electron/latest*.yml; do
+            name=$(basename "$f")
+            echo "enviando $name"
+            curl -sf -X POST -H "Authorization: token $GITEA_TOKEN" \
+              -F "attachment=@$f" "$GITEA_API/releases/$ID/assets?name=$name" > /dev/null
+            sent=$((sent+1))
+          done
+          [ "$sent" -gt 0 ] || { echo "::error::nada para enviar — o build não produziu instaladores"; exit 1; }
+          echo "$sent arquivo(s) publicados"

packages/desktop/electron-builder.yml

@@ -22,11 +22,19 @@ asarUnpack:
 npmRebuild: false
 afterPack: ./scripts/afterPack.js
 publish:
-  # Fork: releases (and therefore the electron-updater feed) come from this
+  # Updates are served from this fork's own Gitea, not from GitHub.
-  # repository, not upstream's.
+  #
-  - provider: github
+  # GitHub is only the build machine — it has the Windows runners the native
-    owner: syncwrld
+  # audio module needs. Its repository is private, and electron-updater against
-    repo: resenhacord
+  # a private GitHub repo would need a token shipped inside the app, which is a
+  # leaked token. Gitea serves release assets to anyone, so no credential ends
+  # up in the installer.
+  #
+  # The tag is fixed at `latest` on purpose: electron-updater fetches
+  # latest.yml before it knows which version exists, so the URL cannot contain
+  # a version. CI replaces that release's assets on every publish.
+  - provider: generic
+    url: https://git.resenha.website/devsyncwrld/backspace/releases/download/latest/
 protocols:
   - name: Backspace
     schemes: