Initial CI/CD pipeline

## Description

Add Forgejo Actions CI pipeline with flatpak builds and tests.

Closes #<!-- issue number -->

## Type of change

- [ ] 🐛 Bug fix
- [ ] ✨ New feature
- [ ] ♻️ Refactor / code cleanup
- [ ] 📖 Documentation
- [x] 🔧 Dependencies / build tooling

## How was this tested?

Verified CI pipeline runs successfully with flatpak builds and tests in Forgejo Actions.

## Checklist

- [ ] I have read the [contributing guide](CONTRIBUTING.md)
- [ ] My code follows the project's style guidelines
- [ ] I have added or updated tests as needed
- [ ] Documentation has been updated where applicable
- [ ] All existing tests pass

Pull request: (#3)

## Description

Add Forgejo Actions CI pipeline with flatpak builds and tests.

Closes #<!-- issue number -->

## Type of change

- [ ] 🐛 Bug fix
- [ ] ✨ New feature
- [ ] ♻️ Refactor / code cleanup
- [ ] 📖 Documentation
- [x] 🔧 Dependencies / build tooling

## How was this tested?

Verified CI pipeline runs successfully with flatpak builds and tests in Forgejo Actions.

## Checklist

- [ ] I have read the [contributing guide](CONTRIBUTING.md)
- [ ] My code follows the project's style guidelines
- [ ] I have added or updated tests as needed
- [ ] Documentation has been updated where applicable
- [ ] All existing tests pass
Co-authored-by: Brendan Szymanski <hello@bscubed.dev>
Co-committed-by: Brendan Szymanski <hello@bscubed.dev>

.forgejo/workflows/pr-checks.yml

@@ -0,0 +1,34 @@
+name: PR Checks
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    container:
+      image: swift:6.3
+    steps:
+      - name: Install Node.js
+        run: apt-get update -qq && apt-get install -y -qq nodejs
+      - uses: actions/checkout@v4
+      - name: Lint
+        run: swift format lint --recursive Sources/
+
+  flatpak-build:
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/flathub/flatpak-builder-lint:latest
+      options: --privileged --security-opt seccomp=unconfined --security-opt apparmor=unconfined
+    steps:
+      - uses: actions/checkout@v4
+      - name: Add Flathub remote
+        run: |
+          flatpak remote-add --system --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+      - uses: https://github.com/flatpak/flatpak-github-actions/flatpak-builder@v6.7
+        with:
+          manifest-path: dev.bscubed.Luminate.json
+          bundle: Luminate.flatpak
+          upload-artifact: false
+          keep-build-dirs: true

.forgejo/workflows/pr-labeler.yml

@@ -0,0 +1,34 @@
+name: PR Labeler
+
+on:
+  pull_request_target:
+    types: [opened]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Label by branch prefix
+        env:
+          FORGEJO_TOKEN: ${{ secrets.FORGEJO_TOKEN }}
+        run: |
+          BRANCH="${{ forge.head_ref }}"
+          case "$BRANCH" in
+            feature/*)  LABEL="enhancement/feature"  ;;
+            fix/*)      LABEL="bug"                  ;;
+            chore/*)    LABEL="enhancement/chore"     ;;
+            refactor/*) LABEL="enhancement/refactor"  ;;
+            docs/*)     LABEL="enhancement/docs"      ;;
+            test/*)     LABEL="enhancement/test"      ;;
+            perf/*)     LABEL="enhancement/perf"      ;;
+            style/*)    LABEL="enhancement/style"     ;;
+            *)          exit 0                        ;;
+          esac
+          REPO="${{ forge.repository }}"
+          API_URL="${{ forge.api_url }}"
+          PR_NUMBER="${{ forge.event.number }}"
+          curl -s -X POST \
+            -H "Authorization: token $FORGEJO_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "{\"labels\": [\"$LABEL\"]}" \
+            "$API_URL/repos/$REPO/issues/$PR_NUMBER/labels"

.forgejo/workflows/release.yml

@@ -0,0 +1,60 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: docker
+    container:
+      image: ghcr.io/flathub-infra/flatpak-github-actions:gnome-50
+      options: --privileged
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: https://github.com/flatpak/flatpak-github-actions/flatpak-builder@v6.7
+        with:
+          manifest-path: dev.bscubed.Luminate.json
+          bundle: Luminate.flatpak
+          cache-key: flatpak-builder-${arch}-${sha256(dev.bscubed.Luminate.json)}-release
+          branch: stable
+          repository-url: https://flathub.org/repo/flathub.flatpakrepo
+          upload-artifact: false
+      - name: Install tools
+        run: apt-get update -qq && apt-get install -y -qq jq
+      - name: Generate changelog
+        run: |
+          PREV_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
+          if [ -n "$PREV_TAG" ]; then
+            git log --oneline --no-decorate "$PREV_TAG..HEAD" > /tmp/changelog.md
+          else
+            echo "Initial release" > /tmp/changelog.md
+          fi
+      - name: Create Forgejo release
+        env:
+          FORGEJO_TOKEN: ${{ secrets.FORGEJO_TOKEN }}
+        run: |
+          TAG="${{ forge.ref_name }}"
+          REPO="${{ forge.repository }}"
+          API_URL="${{ forge.api_url }}"
+          jq -n --arg tag "$TAG" --rawfile body /tmp/changelog.md \
+            '{tag_name: $tag, name: $tag, body: $body}' > /tmp/release-payload.json
+          RESPONSE=$(curl -s -X POST \
+            -H "Authorization: token $FORGEJO_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d @/tmp/release-payload.json \
+            "$API_URL/repos/$REPO/releases")
+          RELEASE_ID=$(echo "$RESPONSE" | jq -r '.id')
+          if [ "$RELEASE_ID" = "null" ] || [ -z "$RELEASE_ID" ]; then
+            echo "Failed to create release:"
+            echo "$RESPONSE"
+            exit 1
+          fi
+          curl -s -X POST \
+            -H "Authorization: token $FORGEJO_TOKEN" \
+            -H "Content-Type: application/octet-stream" \
+            --data-binary "@Luminate.flatpak" \
+            "$API_URL/repos/$REPO/releases/$RELEASE_ID/assets?name=Luminate-$TAG.flatpak"