Add Gitea Actions workflows

CI for both apps and the Rust crates, image publishing to GHCR, and the
arm64 kiosk package build.

.gitea/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  server:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            server/target
+          key: cargo-server-${{ hashFiles('server/Cargo.toml') }}
+          restore-keys: cargo-server-
+
+      - name: Check formatting
+        working-directory: server
+        run: cargo fmt --check
+
+      - name: Clippy
+        working-directory: server
+        run: cargo clippy --all-targets
+
+      - name: Build
+        working-directory: server
+        run: cargo build --release
+
+      - name: Test
+        working-directory: server
+        run: cargo test
+
+  frontend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - uses: actions/cache@v4
+        with:
+          path: ~/.bun/install/cache
+          key: bun-${{ hashFiles('**/package.json') }}
+          restore-keys: bun-
+
+      - name: Install
+        run: bun install
+
+      - name: Type check
+        run: bun run check
+
+      - name: Build web client
+        run: bun run build:web
+
+  kiosk:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Install Tauri system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            libwebkit2gtk-4.1-dev \
+            libgtk-3-dev \
+            librsvg2-dev \
+            libayatana-appindicator3-dev \
+            libssl-dev \
+            patchelf \
+            build-essential \
+            file \
+            wget
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            apps/kiosk-client/src-tauri/target
+          key: cargo-kiosk-${{ hashFiles('apps/kiosk-client/src-tauri/Cargo.toml') }}
+          restore-keys: cargo-kiosk-
+
+      - name: Install
+        run: bun install
+
+      - name: Check formatting
+        working-directory: apps/kiosk-client/src-tauri
+        run: cargo fmt --check
+
+      - name: Clippy
+        working-directory: apps/kiosk-client/src-tauri
+        run: cargo clippy --all-targets
+
+      - name: Build kiosk bundle
+        run: bun run build:kiosk

.gitea/workflows/publish-images.yml

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+name: Build and Publish Docker Images
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*"
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      platforms:
+        description: "Target platforms, comma-separated. Adding an arm target needs a privileged runner."
+        required: false
+        default: "linux/amd64"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_OWNER: sirblobby
+  DEFAULT_PLATFORMS: "linux/amd64"
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: pistation-server
+            dockerfile: server/Dockerfile
+          - name: pistation-web
+            dockerfile: apps/web-client/Dockerfile
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Resolve target platforms
+        id: platforms
+        run: echo "value=${{ github.event.inputs.platforms || env.DEFAULT_PLATFORMS }}" >> "$GITHUB_OUTPUT"
+
+      - name: Set up QEMU
+        if: contains(steps.platforms.outputs.value, 'arm')
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_OWNER }}/${{ matrix.name }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=tag
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./${{ matrix.dockerfile }}
+          platforms: ${{ steps.platforms.outputs.value }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_OWNER }}/${{ matrix.name }}:buildcache
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_OWNER }}/${{ matrix.name }}:buildcache,mode=max

.gitea/workflows/release.yml

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+name: Release
+
+# Container images are published separately by publish-images.yml. This builds the kiosk
+# package for the Pi, which needs an arm64 toolchain rather than a Docker build.
+on:
+  push:
+    tags: ["v*"]
+  workflow_dispatch:
+
+jobs:
+  kiosk-deb:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
+
+      - name: Build the kiosk bundle for arm64
+        run: |
+          docker run --rm --platform linux/arm64 \
+            -v "$PWD:/work" -w /work \
+            arm64v8/debian:bookworm \
+            bash -eux -c '
+              export DEBIAN_FRONTEND=noninteractive
+              apt-get update
+              apt-get install -y --no-install-recommends \
+                curl ca-certificates unzip build-essential file wget \
+                libwebkit2gtk-4.1-dev libgtk-3-dev librsvg2-dev \
+                libayatana-appindicator3-dev libssl-dev patchelf pkg-config
+
+              curl -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal
+              . "$HOME/.cargo/env"
+
+              curl -fsSL https://bun.sh/install | bash
+              export PATH="$HOME/.bun/bin:$PATH"
+
+              bun install
+              export PATH="/work/node_modules/.bin:$PATH"
+              bun run build:kiosk
+            '
+
+      - name: Collect artifacts
+        run: |
+          mkdir -p dist
+          find apps/kiosk-client/src-tauri/target/release/bundle -name '*.deb' -exec cp {} dist/ \;
+          find apps/kiosk-client/src-tauri/target/release/bundle -name '*.AppImage' -exec cp {} dist/ \;
+          ls -lh dist
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: pistation-kiosk-arm64
+          path: dist/*
+          if-no-files-found: error