ci: simplify CI matrix and add GitHub Pages deployment

- Reduce CI to single job (ubuntu-latest, Python 3.11)
- Add CI badge with correct username (mariuspruvot)
- Add GitHub Pages workflow for MkDocs deployment
- Make codecov upload optional (fail_ci_if_error: false)

Author: mariuspruvot

.github/workflows/ci.yml

@@ -8,11 +8,7 @@ on:
 
 jobs:
   test:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.11", "3.12", "3.13"]
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
@@ -22,10 +18,10 @@ jobs:
         with:
           version: "latest"
 
-      - name: Set up Python ${{ matrix.python-version }}
+      - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "3.11"
 
       - name: Install dependencies
         run: |
@@ -42,11 +38,9 @@ jobs:
         run: uv run poe test-cov
 
       - name: Upload coverage to Codecov
-        if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
+        if: success()
         uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: ./coverage.xml
-          flags: unittests
-          name: codecov-umbrella
-          fail_ci_if_error: true
+          fail_ci_if_error: false

.github/workflows/docs.yml

@@ -0,0 +1,30 @@
+name: Docs
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        run: |
+          uv venv
+          uv pip install -e ".[dev]"
+
+      - name: Deploy MkDocs
+        run: uv run mkdocs gh-deploy --force