ci: pytest (3.10 + 3.14) + sdist build gate on push/PR

Author: vveerrgg

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["3.10", "3.14"]   # claimed floor (requires-python >=3.10) + proven ceiling
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Install
+        run: pip install -e ".[dev]" || pip install -e . pytest
+      - name: Test
+        run: python -m pytest -q
+
+  build:
+    # sdist/wheel must pack cleanly — catches packing regressions (stray symlinks,
+    # junk dirs) in CI instead of on release day.
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - name: Build sdist + wheel
+        run: pip install build && python -m build