Add CI workflow, install.sh, and example config

.github/workflows/build.yml

@@ -0,0 +1,85 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ "main" ]
+    tags: [ "v*" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: write
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.22"
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Vet
+        run: go vet ./...
+
+      - name: Run tests
+        run: go test ./... -v -cover
+
+  build:
+    name: Build binaries
+    needs: test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        goos: [linux, windows, darwin]
+        goarch: [amd64, arm64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.22"
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Build
+        env:
+          GOOS: ${{ matrix.goos }}
+          GOARCH: ${{ matrix.goarch }}
+          CGO_ENABLED: 0
+        run: |
+          mkdir -p dist
+          ext=""
+          if [ "${{ matrix.goos }}" = "windows" ]; then ext=".exe"; fi
+          out="dist/kctl-tui-${{ matrix.goos }}-${{ matrix.goarch }}${ext}"
+          go build -o "$out" -ldflags "-s -w" ./cmd/kctl-tui
+          echo "Built $out"
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: kctl-tui-${{ matrix.goos }}-${{ matrix.goarch }}
+          path: dist/*
+
+  release:
+    name: Attach binaries to GitHub Release
+    if: startsWith(github.ref, 'refs/tags/v')
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: dist
+          merge-multiple: true
+
+      - name: Create release and upload binaries
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/*
+          generate_release_notes: true