ci: add TiaC build and release wheel workflow

Adds a self-contained GitHub Actions workflow to build the Python wheel
using uv and publish it to GitHub Releases on tag push or manual trigger.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: andreaskurz

.github/workflows/build-release.yml

@@ -0,0 +1,55 @@
+name: TiaC Build and Release Wheel
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to release (e.g. v3.2.1)'
+        required: true
+        type: string
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          enable-cache: true
+
+      - name: Fetch Reveal.js assets
+        run: uv run tools/fetch_revealjs.py
+
+      - name: Build wheel and sdist
+        run: uv build
+
+      - name: Upload dist artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: dist-packages
+          path: dist/
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/download-artifact@v8
+        with:
+          name: dist-packages
+          path: dist/
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ inputs.tag || github.ref_name }}
+          name: Release ${{ inputs.tag || github.ref_name }}
+          draft: false
+          prerelease: ${{ contains(inputs.tag || github.ref_name, 'a') || contains(inputs.tag || github.ref_name, 'b') || contains(inputs.tag || github.ref_name, 'rc') }}
+          files: dist/*