Add GitHub workflows and templates

.github/pull_request_template.md

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+## Pull request (PR) description:
+> Provide a brief description of the PR here.
+> 
+> It does not need to list what each individual commit does, but rather provide a high-level overview of the PR.
+
+## Issues resolved:
+> Any associated issues should be provided here using the format: 'Resolves #<issue>' (e.g. Resolves #1). If there are none, use 'n/a' instead.

.github/workflows/pr-ci-report.yml

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+name: Pull Request CI Report
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  python-tests:
+    name: Python ${{ matrix.python-version }} (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    if: github.event.pull_request.head.repo.full_name == github.repository
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ["3.14", "3.15"]
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: OS version (Linux)
+        if: runner.os == 'Linux'
+        shell: bash
+        run: |
+          . /etc/os-release
+          echo "OS_NAME=$NAME" >> "$GITHUB_ENV"
+          echo "OS_VER=$VERSION_ID" >> "$GITHUB_ENV"
+
+      - name: OS version (macOS)
+        if: runner.os == 'macOS'
+        shell: bash
+        run: |
+          echo "OS_NAME=macOS" >> "$GITHUB_ENV"
+          echo "OS_VER=$(sw_vers -productVersion)" >> "$GITHUB_ENV"
+
+      - name: Install Linux Qt runtime dependencies
+        if: runner.os == 'Linux'
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libegl1 \
+            libgl1 \
+            libdbus-1-3 \
+            libxkbcommon-x11-0 \
+            libxcb-cursor0 \
+            libxcb-icccm4 \
+            libxcb-image0 \
+            libxcb-keysyms1 \
+            libxcb-randr0 \
+            libxcb-render-util0 \
+            libxcb-shape0 \
+            libxcb-xinerama0 \
+            libxcb-xfixes0 \
+            xvfb
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@ae62891fec2bb8e7d6c99fc78c9fec3a63790f8d
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Sync dependencies
+        run: uv sync --all-extras
+
+      - name: Run pytest
+        id: pytest
+        continue-on-error: true
+        run: uv run pytest
+
+      - name: Build package
+        id: build
+        continue-on-error: true
+        run: uv build
+
+      - name: Add venv bin to PATH
+        shell: bash
+        run: echo "$PWD/.venv/bin" >> "$GITHUB_PATH"
+
+      - name: Check CLI entry point
+        id: cli
+        continue-on-error: true
+        run: comms --help
+
+      - name: Write result file
+        if: always()
+        shell: bash
+        run: |
+          mkdir -p result
+          cat > result/result.json <<EOF
+          {
+            "os_name": "${{ env.OS_NAME }}",
+            "os_ver": "${{ env.OS_VER }}",
+            "python_version": "${{ matrix.python-version }}",
+            "tests": "${{ steps.pytest.outcome == 'success' && 'pass' || 'fail' }}",
+            "build": "${{ steps.build.outcome == 'success' && 'pass' || 'fail' }}",
+            "cli": "${{ steps.cli.outcome == 'success' && 'pass' || 'fail' }}"
+          }
+          EOF
+
+      - name: Upload result artifact
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: python-result-${{ matrix.os }}-${{ matrix.python-version }}
+          path: result/result.json
+
+      - name: Fail if any check failed
+        if: always() && (steps.pytest.outcome == 'failure' || steps.build.outcome == 'failure' || steps.cli.outcome == 'failure')
+        run: exit 1
+
+  r-tests:
+    name: R ${{ matrix.r-version }} (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    if: github.event.pull_request.head.repo.full_name == github.repository
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        r-version: ["4.4.3", "4.5.3", "4.6.1"]
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: OS version (Linux)
+        if: runner.os == 'Linux'
+        shell: bash
+        run: |
+          . /etc/os-release
+          echo "OS_NAME=$NAME" >> "$GITHUB_ENV"
+          echo "OS_VER=$VERSION_ID" >> "$GITHUB_ENV"
+          echo "USE_BUNDLED_LIBUV=1" >> "$GITHUB_ENV"
+
+      - name: OS version (macOS)
+        if: runner.os == 'macOS'
+        shell: bash
+        run: |
+          echo "OS_NAME=macOS" >> "$GITHUB_ENV"
+          echo "OS_VER=$(sw_vers -productVersion)" >> "$GITHUB_ENV"
+
+      - name: Install Linux runtime dependencies
+        if: runner.os == 'Linux'
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libcurl4-openssl-dev \
+            libfontconfig1-dev \
+            libfreetype6-dev \
+            libfribidi-dev \
+            libharfbuzz-dev \
+            libjpeg-dev \
+            libpng-dev \
+            libtiff5-dev \
+            libwebp-dev
+
+      - name: Set up R
+        uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.r-version }}
+          use-public-rspm: true
+
+      - name: Install R dependencies
+        run: |
+          Rscript -e 'install.packages("testthat", repos = "https://cloud.r-project.org")'
+          Rscript src/comms/r/deps/install_deps.R
+
+      - name: Run R tests
+        id: rtests
+        continue-on-error: true
+        run: Rscript -e 'testthat::test_dir("tests/r")'
+
+      - name: Write result file
+        if: always()
+        shell: bash
+        run: |
+          mkdir -p result
+          cat > result/result.json <<EOF
+          {
+            "os_name": "${{ env.OS_NAME }}",
+            "os_ver": "${{ env.OS_VER }}",
+            "r_version": "${{ matrix.r-version }}",
+            "tests": "${{ steps.rtests.outcome == 'success' && 'pass' || 'fail' }}"
+          }
+          EOF
+
+      - name: Upload result artifact
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: r-result-${{ matrix.os }}-${{ matrix.r-version }}
+          path: result/result.json
+
+      - name: Fail if R tests failed
+        if: always() && steps.rtests.outcome == 'failure'
+        run: exit 1
+
+  all-checks-passed:
+    name: All checks passed
+    needs: [python-tests, r-tests]
+    if: always() && github.event.pull_request.head.repo.full_name == github.repository
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check job results
+        run: |
+          if [ "${{ needs.python-tests.result }}" != "success" ] || \
+             [ "${{ needs.r-tests.result }}" != "success" ]; then
+            echo "One or more required checks failed."
+            exit 1
+          fi
+          echo "All required checks passed."
+
+  summary:
+    name: Post pull request CI report
+    needs: [python-tests, r-tests]
+    if: always() && github.event.pull_request.head.repo.full_name == github.repository
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout branch for workflow script
+        uses: actions/checkout@v7
+
+      - name: Download Python results
+        uses: actions/download-artifact@v7
+        continue-on-error: true
+        with:
+          pattern: python-result-*
+          path: results/python
+
+      - name: Download R results
+        uses: actions/download-artifact@v7
+        continue-on-error: true
+        with:
+          pattern: r-result-*
+          path: results/r
+
+      - name: List all downloaded files
+        shell: bash
+        run: ls -a
+
+      - name: Build summary
+        id: build
+        shell: bash
+        run: python3 .github/workflows/pr_ci_report.py
+
+      - name: Comment on pull request
+        uses: marocchino/sticky-pull-request-comment@v3
+        with:
+          header: pull-request-ci-report
+          path: pr_ci_report.md

.github/workflows/pr-version-check.yml

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+name: Main Branch Pull Request Version Check
+
+on:
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  version-check:
+    name: Check version bump
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout PR branch
+        uses: actions/checkout@v7
+
+      - name: Read PR version
+        id: pr_version
+        run: |
+          VERSION=$(grep -m1 '^version *= *' pyproject.toml | sed -E 's/version *= *"([^"]+)"/\1/')
+          if [ -z "$VERSION" ]; then
+            echo "Could not read version from pyproject.toml" >&2
+            exit 1
+          fi
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Read main version
+        id: main_version
+        run: |
+          git fetch origin main --depth=1
+          VERSION=$(git show origin/main:pyproject.toml | grep -m1 '^version *= *' | sed -E 's/version *= *"([^"]+)"/\1/')
+          if [ -z "$VERSION" ]; then
+            echo "Could not read version from main's pyproject.toml" >&2
+            exit 1
+          fi
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@ae62891fec2bb8e7d6c99fc78c9fec3a63790f8d
+
+      - name: Compare versions
+        run: |
+          PR_VERSION="${{ steps.pr_version.outputs.version }}"
+          MAIN_VERSION="${{ steps.main_version.outputs.version }}"
+          echo "PR version: $PR_VERSION"
+          echo "main version: $MAIN_VERSION"
+          uv run --with packaging python3 - "$PR_VERSION" "$MAIN_VERSION" <<'EOF'
+          import sys
+          from packaging.version import Version, InvalidVersion
+
+          pr_raw, main_raw = sys.argv[1], sys.argv[2]
+
+          try:
+              pr = Version(pr_raw)
+              main = Version(main_raw)
+          except InvalidVersion as e:
+              print(f"Could not parse version as PEP 440: {e}", file=sys.stderr)
+              sys.exit(1)
+
+          if pr <= main:
+              print(f'Version in pyproject.toml ({pr_raw}) is not greater than main ({main_raw}). Versions must strictly increase.'', file=sys.stderr)
+              sys.exit(1)
+
+          print(f'OK: {pr_raw} > {main_raw}'')
+          EOF