👷 CI setup

.github/codecov.yml

@@ -0,0 +1,52 @@
+ignore:
+  - "extern/**/*"
+  - "include/GateMatrixDefinitions.h"
+  - "**/python"
+  - "test/**/*"
+
+coverage:
+  range: 60..90
+  precision: 1
+  status:
+    project: off
+    patch: off
+
+flag_management:
+  default_rules:
+    carryforward: true
+    statuses:
+      - type: project
+        target: auto
+        threshold: 0.5%
+        removed_code_behavior: adjust_base
+      - type: patch
+        target: 90%
+        threshold: 1%
+  individual_flags:
+    - name: cpp
+      paths:
+        - "include"
+        - "src"
+      after_n_builds: 1
+    - name: python
+      paths:
+        - "src/mqt/**/*.py"
+      after_n_builds: 12
+      statuses:
+        - type: project
+          threshold: 0.5%
+          removed_code_behavior: adjust_base
+        - type: patch
+          target: 95%
+          threshold: 1%
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: no
+      loop: no
+
+comment:
+  layout: "reach, diff, flags, files"
+  require_changes: true
+  show_carryforward_flags: true

.github/dependabot.yml

@@ -0,0 +1,36 @@
+version: 2
+updates:
+  - package-ecosystem: "gitsubmodule"
+    directory: "/"
+    groups:
+      submodules:
+        patterns:
+          - "*"
+    schedule:
+      interval: "monthly"
+      time: "06:00"
+      timezone: "Europe/Vienna"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+    schedule:
+      interval: "weekly"
+      day: "friday"
+      time: "06:00"
+      timezone: "Europe/Vienna"
+
+  - package-ecosystem: "pip"
+    directory: "/"
+    groups:
+      python-dependencies:
+        patterns:
+          - "*"
+    schedule:
+      interval: "weekly"
+      day: "friday"
+      time: "06:00"
+      timezone: "Europe/Vienna"

.github/release-drafter.yml

@@ -0,0 +1,54 @@
+name-template: "MQT Qudits $RESOLVED_VERSION Release"
+tag-template: "v$RESOLVED_VERSION"
+categories:
+  - title: "🚀 Features and Enhancements"
+    labels:
+      - "feature"
+      - "enhancement"
+      - "usability"
+  - title: "🐛 Bug Fixes"
+    labels:
+      - "bug"
+      - "fix"
+  - title: "📄 Documentation"
+    labels:
+      - "documentation"
+  - title: "🤖 CI"
+    labels:
+      - "continuous integration"
+  - title: "📦 Packaging"
+    labels:
+      - "packaging"
+  - title: "🧹 Code Quality"
+    labels:
+      - "code quality"
+  - title: "⬆️ Dependencies"
+    collapse-after: 5
+    labels:
+      - "dependencies"
+      - "submodules"
+      - "github_actions"
+change-template: "- $TITLE @$AUTHOR (#$NUMBER)"
+change-title-escapes: '\<*_&'
+version-resolver:
+  major:
+    labels:
+      - "major"
+  minor:
+    labels:
+      - "minor"
+  patch:
+    labels:
+      - "patch"
+  default: patch
+autolabeler:
+  - label: "dependencies"
+    title:
+      - "/update pre-commit hooks/i"
+
+template: |
+  ## 👀 What Changed
+
+  $CHANGES
+
+  **Full Changelog**: https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...v$RESOLVED_VERSION

.github/workflows/cd.yml

@@ -1,4 +1,28 @@
-name: cd.yml
+name: CD
 on:
+  release:
+    types: [published]
+  workflow_dispatch:
 
 jobs:
+  python-packaging:
+    name: 🐍 Packaging
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+
+  deploy:
+    if: github.event_name == 'release' && github.event.action == 'published'
+    name: 🚀 Deploy to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/mqt.qudits
+    permissions:
+      id-token: write
+    needs: [python-packaging]
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: cibw-*
+          path: dist
+          merge-multiple: true
+      - uses: pypa/gh-action-pypi-publish@release/v1

.github/workflows/ci.yml

@@ -1,4 +1,83 @@
-name: ci.yml
+name: CI
 on:
+  push:
+    branches:
+      - main
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
 
 jobs:
+  change-detection:
+    name: 🔍 Change
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+
+  cpp-tests:
+    name: 🇨‌ Test
+    needs: change-detection
+    if: fromJSON(needs.change-detection.outputs.run-cpp-tests)
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+    secrets:
+      token: ${{ secrets.CODECOV_TOKEN }}
+    with:
+      cmake-args: ""
+      cmake-args-ubuntu: -G Ninja
+      cmake-args-macos: -G Ninja
+      cmake-args-windows: -T ClangCL
+
+  cpp-linter:
+    name: 🇨‌ Lint
+    needs: change-detection
+    if: fromJSON(needs.change-detection.outputs.run-cpp-linter)
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+
+  python-tests:
+    name: 🐍 Test
+    needs: change-detection
+    if: fromJSON(needs.change-detection.outputs.run-python-tests)
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+    secrets:
+      token: ${{ secrets.CODECOV_TOKEN }}
+
+  code-ql:
+    name: 📝 CodeQL
+    needs: change-detection
+    if: fromJSON(needs.change-detection.outputs.run-code-ql)
+    uses: cda-tum/mqt-core/.github/workflows/[email protected]
+
+  required-checks-pass: # This job does nothing and is only used for branch protection
+    name: 🚦 Check
+    if: always()
+    needs:
+      - change-detection
+      - cpp-tests
+      - cpp-linter
+      - python-tests
+      - code-ql
+    runs-on: ubuntu-latest
+    steps:
+      - name: Decide whether the needed jobs succeeded or failed
+        uses: re-actors/alls-green@release/v1
+        with:
+          allowed-skips: >-
+            ${{
+              fromJSON(needs.change-detection.outputs.run-cpp-tests)
+              && '' || 'cpp-tests,'
+            }}
+            ${{
+              fromJSON(needs.change-detection.outputs.run-cpp-linter)
+              && '' || 'cpp-linter,'
+            }}
+            ${{
+              fromJSON(needs.change-detection.outputs.run-python-tests)
+              && '' || 'python-tests,'
+            }}
+            ${{
+              fromJSON(needs.change-detection.outputs.run-code-ql)
+              && '' || 'code-ql,'
+            }}
+          jobs: ${{ toJSON(needs) }}

.github/workflows/release-drafter.yml

@@ -0,0 +1,23 @@
+name: Release Drafter
+
+on:
+  push:
+    branches:
+      - main
+  pull_request_target:
+    types: [opened, reopened, synchronize]
+
+permissions:
+  contents: read
+
+jobs:
+  update_release_draft:
+    name: Run
+    permissions:
+      contents: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v6
+        env:
+          GITHUB_TOKEN: ${{ github.token }}