Rewrite in Go: static binaries, zero runtime dependencies

Replace Node.js + Python codebase with three Go binaries:
- claude-statusline: CLI status bar for Claude Code
- claude-fetcher: standalone cron job for API usage
- claude-widget: system tray icon (fyne-io/systray + fogleman/gg)

All CGO-free for trivial cross-compilation. Add nfpm .deb packaging
with autostart and cron. CI pipeline produces Linux + Windows binaries,
.deb, .tar.gz, and .zip release assets.

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

.gitea/workflows/release.yml

@@ -6,76 +6,74 @@ on:
       - 'v*'
 
 jobs:
-  release:
+  build:
     runs-on: ubuntu-latest
+    container:
+      image: golang:1.23
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Extract version from tag
-        id: version
-        run: echo "VERSION=${GITHUB_REF_NAME#v}" >> "$GITHUB_OUTPUT"
+      - name: Extract version
+        run: echo "VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_ENV
 
-      - name: Build source archives
+      - name: Install nfpm
+        run: go install github.com/goreleaser/nfpm/v2/cmd/nfpm@latest
+
+      - name: Build Linux binaries
         run: |
-          PROJECT="claude-statusline-${{ steps.version.outputs.VERSION }}"
+          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o claude-statusline ./cmd/statusline
+          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o claude-fetcher ./cmd/fetcher
+          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o claude-widget ./cmd/widget
 
-          # Files to include in the release archives
-          INCLUDE=(
-            statusline.js
-            fetch-usage.js
-            install.sh
-            install.ps1
-            install_wizard.py
-            package.json
-            requirements.txt
-            README.md
-            CHANGELOG.md
-            LICENSE
-            .gitattributes
-            claude_usage_widget/__init__.py
-            claude_usage_widget/__main__.py
-            claude_usage_widget/app.py
-            claude_usage_widget/config.py
-            claude_usage_widget/fetcher.py
-            claude_usage_widget/menu.py
-            claude_usage_widget/renderer.py
-          )
+      - name: Build Windows binaries
+        run: |
+          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o claude-statusline.exe ./cmd/statusline
+          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o claude-fetcher.exe ./cmd/fetcher
+          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -trimpath -ldflags="-s -w -H=windowsgui" -o claude-widget.exe ./cmd/widget
 
-          mkdir -p "dist/${PROJECT}/claude_usage_widget"
+      - name: Build .deb package
+        run: |
+          export PATH=$PATH:$(go env GOPATH)/bin
+          VERSION=${{ env.VERSION }} nfpm package --config packaging/nfpm.yaml --packager deb --target claude-statusline_${{ env.VERSION }}_amd64.deb
 
-          for f in "${INCLUDE[@]}"; do
-            [ -f "$f" ] && cp "$f" "dist/${PROJECT}/$f"
-          done
+      - name: Create Linux tarball
+        run: |
+          mkdir -p dist/claude-statusline-${{ env.VERSION }}
+          cp claude-statusline claude-fetcher claude-widget dist/claude-statusline-${{ env.VERSION }}/
+          cp README.md CHANGELOG.md dist/claude-statusline-${{ env.VERSION }}/
+          cp packaging/linux/claude-widget.desktop dist/claude-statusline-${{ env.VERSION }}/
+          cp packaging/linux/claude-statusline-fetch dist/claude-statusline-${{ env.VERSION }}/
+          tar -czf claude-statusline_${{ env.VERSION }}_linux_amd64.tar.gz -C dist claude-statusline-${{ env.VERSION }}
 
-          # tar.gz for Linux / macOS
-          tar -czf "dist/${PROJECT}.tar.gz" -C dist "${PROJECT}"
+      - name: Create Windows zip
+        run: |
+          apt-get update -qq && apt-get install -y -qq zip >/dev/null 2>&1
+          mkdir -p dist-win/claude-statusline-${{ env.VERSION }}
+          cp claude-statusline.exe claude-fetcher.exe claude-widget.exe dist-win/claude-statusline-${{ env.VERSION }}/
+          cp README.md CHANGELOG.md dist-win/claude-statusline-${{ env.VERSION }}/
+          cd dist-win && zip -r ../claude-statusline_${{ env.VERSION }}_windows_amd64.zip claude-statusline-${{ env.VERSION }}
 
-          # zip for Windows
-          cd dist && zip -r "${PROJECT}.zip" "${PROJECT}" && cd ..
-
-      - name: Create release and upload assets
+      - name: Create Gitea release
         env:
-          TAG: ${{ github.ref_name }}
-          VERSION: ${{ steps.version.outputs.VERSION }}
           TOKEN: ${{ secrets.RELEASE_TOKEN }}
-          GITEA_URL: ${{ github.server_url }}
-          REPO: ${{ github.repository }}
         run: |
-          API="${GITEA_URL}/api/v1/repos/${REPO}"
+          API="${GITHUB_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}"
+          TAG="${GITHUB_REF_NAME}"
 
-          # Create the release
+          # Create release
           RELEASE_ID=$(curl -s -X POST "${API}/releases" \
             -H "Authorization: token ${TOKEN}" \
             -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"${TAG}\",\"name\":\"${TAG}\",\"body\":\"See [CHANGELOG.md](CHANGELOG.md) for details.\",\"draft\":false,\"prerelease\":false}" \
-            | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
+            -d "{\"tag_name\":\"${TAG}\",\"name\":\"${TAG}\",\"body\":\"See CHANGELOG.md for details.\",\"draft\":false,\"prerelease\":false}" \
+            | grep -o '"id":[0-9]*' | grep -m1 -o '[0-9]*')
 
-          # Upload archives
-          for file in dist/claude-statusline-${VERSION}.tar.gz dist/claude-statusline-${VERSION}.zip; do
-            FILENAME=$(basename "$file")
-            curl -s -X POST "${API}/releases/${RELEASE_ID}/assets?name=${FILENAME}" \
+          # Upload assets
+          for FILE in \
+            claude-statusline_${{ env.VERSION }}_amd64.deb \
+            claude-statusline_${{ env.VERSION }}_linux_amd64.tar.gz \
+            claude-statusline_${{ env.VERSION }}_windows_amd64.zip; do
+            curl -s -X POST "${API}/releases/${RELEASE_ID}/assets?name=${FILE}" \
               -H "Authorization: token ${TOKEN}" \
-              -H "Content-Type: application/octet-stream" \
-              --data-binary "@${file}"
+              -F "attachment=@${FILE}"
           done