diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 000000000..c05b5fe93
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1 @@
+/.github/ @thomass-dev @rouk1 @augustebaum
diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index 8201a3aa7..8f177dac4 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -1,68 +1,83 @@
-name: Reusable skore workflow
+# THIS
+# IS
+# DOCUMENTATION
+# REUSABLE WORKFLOW
+
+name: backend
 
 on: [workflow_call]
 
 defaults:
   run:
     shell: "bash"
-    working-directory: "./skore"
 
 jobs:
-  test-skore:
+  lint-backend:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+
+      - name: Install dependencies
+        run: python -m pip install --upgrade pip pre-commit
+
+      - name: Lint
+        working-directory: skore/
+        run: pre-commit run --all-files ruff
+
+  test-backend:
     strategy:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest", "windows-latest"]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python: ["3.9", "3.10", "3.11", "3.12"]
+        coverage: [false]
+        include:
+          - os: "ubuntu-latest"
+            python: "3.12"
+            coverage: true
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-          cache: "pip"
-      - name:
-        timeout-minutes: 10
-        run: |
-          # Install dependencies
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade pre-commit
-          python -m pip install --upgrade build
+      - name: Checkout code
+        uses: actions/checkout@v4
 
-          # Lint
-          pre-commit run --all-files ruff
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+          cache: pip
 
-          # Build
-          python -m build
+      - name: Install dependencies
+        run: python -m pip install --upgrade pip build
 
-          # Install
-          wheel=(dist/*.whl); python -m pip install "${wheel}[test]"
+      - name: Build
+        working-directory: skore/
+        run: python -m build
 
-          # Test
-          python -m pytest --no-cov src/ tests/ -n auto
+      - name: Install
+        working-directory: skore/
+        run: wheel=(dist/*.whl); python -m pip install "${wheel}[test]"
 
-  coverage-skore:
-    runs-on: ubuntu-latest
-    if: ${{ github.event_name == 'pull_request' }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: 3.12
-          cache: "pip"
-      - name: pytest coverage
+      - name: Test with/without coverage
+        timeout-minutes: 10
+        working-directory: skore/
         run: |
-          # Install dependencies
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade pre-commit
-          python -m pip install --upgrade build
-          python -m pip install -e .[test]
+          if [ ${{ matrix.coverage }} = false ] ; then
+              python -m pytest -n auto --no-cov src/ tests/
+          else
+              mkdir coverage
+              python -m pytest -n auto --junitxml=coverage/coverage.xml --cov=skore src/ tests/ | tee coverage/coverage.txt
+          fi
 
-          # run coverage
-          python -m pytest -n auto --junitxml=coverage.xml --cov=skore src/ tests/ | tee pytest-coverage.txt
-      - name: Pytest coverage comment
-        uses: MishaKav/pytest-coverage-comment@main
+      - name: Upload coverage reports
+        if: matrix.coverage == 'true'
+        uses: actions/upload-artifact@v4
         with:
-          pytest-coverage-path: ./skore/pytest-coverage.txt
-          junitxml-path: ./skore/coverage.xml
-          title: pytest coverage report
+          name: backend-coverage
+          path: skore/coverage/
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e3db1d26d..129c39dc2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,3 +1,7 @@
+# THIS
+# IS
+# DOCUMENTATION
+
 name: CI
 
 on:
@@ -10,6 +14,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions: {}
+
 jobs:
   changes:
     runs-on: ubuntu-latest
@@ -29,39 +35,37 @@ jobs:
               - 'skore/tests/**'
               - 'skore/pyproject.toml'
               - 'skore/requirements*.txt'
-              - '.github/workflows/skore.yml'
+              - '.github/workflows/backend.yml'
             skore-ui:
               - 'skore-ui/**'
-              - '.github/workflows/skore-ui.yml'
+              - '.github/workflows/frontend.yml'
 
   lint-all-files:
     uses: ./.github/workflows/lint.yml
     permissions:
       contents: read
 
-  lint-and-test-skore:
+  lint-and-test-backend:
     needs: [lint-all-files, changes]
-    if: ${{ (github.event_name == 'push' && github.ref == 'refs/heads/main') || (github.event_name == 'pull_request' && needs.changes.outputs.skore == 'true') }}
-    uses: ./.github/workflows/skore.yml
+    if: (github.event_name == 'push' && github.ref == 'refs/heads/main') || (github.event_name == 'pull_request' && needs.changes.outputs.skore == 'true')
+    uses: ./.github/workflows/backend.yml
     permissions:
       contents: read
-      pull-requests: write
 
-  lint-and-test-skore-ui:
+  lint-and-test-frontend:
     needs: [lint-all-files, changes]
-    if: ${{ (github.event_name == 'push' && github.ref == 'refs/heads/main') || (github.event_name == 'pull_request' && needs.changes.outputs.skore-ui == 'true') }}
-    uses: ./.github/workflows/skore-ui.yml
+    if: (github.event_name == 'push' && github.ref == 'refs/heads/main') || (github.event_name == 'pull_request' && needs.changes.outputs.skore-ui == 'true')
+    uses: ./.github/workflows/frontend.yml
     permissions:
       contents: read
-      pull-requests: write
 
   ci-all-green:
     needs:
       - changes
       - lint-all-files
-      - lint-and-test-skore
-      - lint-and-test-skore-ui
-    if: ${{ always() }}
+      - lint-and-test-backend
+      - lint-and-test-frontend
+    if: always()
     runs-on: Ubuntu-latest
     steps:
       - shell: bash
diff --git a/.github/workflows/skore-ui.yml b/.github/workflows/frontend.yml
similarity index 50%
rename from .github/workflows/skore-ui.yml
rename to .github/workflows/frontend.yml
index 6f1b63876..8032d490f 100644
--- a/.github/workflows/skore-ui.yml
+++ b/.github/workflows/frontend.yml
@@ -1,23 +1,32 @@
-name: Reusable skore-ui workflow
+# THIS
+# IS
+# DOCUMENTATION
+# REUSABLE WORKFLOW
+
+name: frontend
 
 on: [workflow_call]
 
 defaults:
   run:
     shell: 'bash'
-    working-directory: './skore-ui'
 
 jobs:
-  lint-skore-ui:
+  lint-frontend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'
           cache-dependency-path: skore-ui/package-lock.json
-      - name: Lint skore-ui
+
+      - name: Lint
+        working-directory: skore-ui/
         run: |
           npm install
           npm run type-check
@@ -25,38 +34,46 @@ jobs:
           npm run format
           npm run style-lint
 
-  test-skore-ui:
+  test-frontend:
     runs-on: ubuntu-latest
-    needs: lint-skore-ui
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'
           cache-dependency-path: skore-ui/package-lock.json
-      - name: Test skore-ui
+
+      - name: Test with coverage
+        working-directory: skore-ui/
         run: |
           npm install
           npm run test:unit:coverage
-      - name: Report coverage
-        if: always()
-        uses: davelosert/vitest-coverage-report-action@v2
+
+      - name: Upload coverage reports
+        uses: actions/upload-artifact@v4
         with:
-          working-directory: ./skore-ui
-          pr-number: ${{ github.event.number }}
+          name: frontend-coverage
+          path: skore-ui/coverage/
 
-  build-skore-ui:
+  build-frontend:
     runs-on: ubuntu-latest
-    needs: test-skore-ui
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'
           cache-dependency-path: skore-ui/package-lock.json
-      - name: Build skore-ui
+
+      - name: Build
+        working-directory: skore-ui/
         run: |
           npm install
           npm run build
diff --git a/.github/workflows/add-pr-assignee.yml b/.github/workflows/pr-add-assignee.yml
similarity index 97%
rename from .github/workflows/add-pr-assignee.yml
rename to .github/workflows/pr-add-assignee.yml
index 6a78b0c45..562f5bb81 100644
--- a/.github/workflows/add-pr-assignee.yml
+++ b/.github/workflows/pr-add-assignee.yml
@@ -4,6 +4,8 @@ on:
   pull_request_target:
     types: [opened]
 
+permissions: {}
+
 jobs:
   add-pr-assignee:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/lint-pr-title.yml b/.github/workflows/pr-lint-title.yml
similarity index 100%
rename from .github/workflows/lint-pr-title.yml
rename to .github/workflows/pr-lint-title.yml