ci: move the CI to Gitea Actions and cache what is rebuilt

Linux-only runner, so the Windows and macOS legs and GitHub's audit action are
gone. The Rust toolchain, cargo registry and target directories live on the
runner's persistent toolcache volume. release.yml stays under .github and is
not run by Gitea.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -1,83 +0,0 @@
-name: CI
-
-on:
-  # Mudança só de documentação não precisa de 6 jobs em 3 sistemas.
-  push:
-    branches: [main]
-    paths-ignore: ['**.md', 'docs/**', 'LICENSE*', '.gitignore', '.githooks/**']
-  pull_request:
-    paths-ignore: ['**.md', 'docs/**', 'LICENSE*', '.gitignore', '.githooks/**']
-
-concurrency:
-  group: ci-${{ github.ref }}
-  cancel-in-progress: true
-
-env:
-  CARGO_TERM_COLOR: always
-  RUSTFLAGS: -D warnings
-
-jobs:
-  lint:
-    name: Formatação e clippy
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          components: rustfmt, clippy
-      - uses: Swatinem/rust-cache@v2
-      - uses: actions/setup-node@v7
-        with:
-          node-version: 22
-      - name: Cobertura da tradução da interface
-        run: node scripts/check-ui-i18n.mjs
-      - run: cargo fmt --all -- --check
-      - run: cargo clippy --workspace --all-targets
-
-  test:
-    name: Testes (${{ matrix.os }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-24.04, windows-latest, macos-latest]
-    steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo test --workspace
-
-  audit:
-    name: Auditoria de dependências
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      - uses: rustsec/audit-check@v2
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-
-  gui:
-    name: Compila o app desktop (Linux)
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: apps/gui/src-tauri
-      - uses: actions/setup-node@v7
-        with:
-          node-version: 22
-      - name: Cache dos pacotes do Tauri (.deb)
-        uses: actions/cache@v6
-        with:
-          path: ~/apt-cache
-          key: apt-tauri-${{ runner.os }}-${{ runner.arch }}-${{ env.ImageVersion }}-${{ hashFiles('scripts/apt-install.sh') }}
-      - name: Dependências do Tauri
-        timeout-minutes: 25
-        run: scripts/apt-install.sh ~/apt-cache libwebkit2gtk-4.1-dev libayatana-appindicator3-dev librsvg2-dev patchelf
-      - name: Gera os ícones
-        run: npx --yes @tauri-apps/cli@2 icon apps/gui/src-tauri/icons/source.png -o apps/gui/src-tauri/icons
-      - run: cargo check --manifest-path apps/gui/src-tauri/Cargo.toml
-        env:
-          RUSTFLAGS: ""