feat: enhance CI/CD workflows for package building and release

.github/workflows/python-app.yml

@@ -5,6 +5,7 @@ on:
     branches: ["main"]
   pull_request:
     branches: ["**"]
+  workflow_call:  # Allow this workflow to be called by other workflows
 
 permissions:
   contents: read
@@ -76,4 +77,29 @@ jobs:
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          slug: DrWheelicus/encoderize
+          slug: DrWheelicus/encoderize
+
+  build_package:
+    runs-on: ubuntu-latest
+    needs: lint_and_test
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install build dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build
+
+      - name: Build package
+        run: python -m build
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/

.github/workflows/release.yml

@@ -0,0 +1,50 @@
+name: Release to PyPI
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+  id-token: write
+
+jobs:
+  # Reuse the existing CI workflow for testing and building
+  ci:
+    uses: ./.github/workflows/python-app.yml
+    secrets: inherit
+
+  publish-pypi:
+    needs: ci
+    runs-on: ubuntu-latest
+    environment:
+      name: Main Deployment
+      url: https://pypi.org/project/encoderize/
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+
+  github-release:
+    needs: [ci, publish-pypi]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: dist/*