ci(github): consolidate test and lint into single workflow

.github/workflows/ci.yml

@@ -0,0 +1,112 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    tags:
+      - v*
+    branches:
+      - main
+
+concurrency:
+  group: ci-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: 🔨 Build (${{ matrix.go-version }})
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [1.24.x, 1.25.x]
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v6
+
+      - name: ⬇️ Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: 🔨 Build
+        run: go build -v ./cmd/task
+
+  test:
+    name: 🧪 Test (${{ matrix.go-version }}, ${{ matrix.platform }})
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [1.24.x, 1.25.x]
+        platform: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v6
+
+      - name: ⬇️ Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: ⬇️ Setup Task
+        uses: go-task/setup-task@v1
+
+      - name: 🧪 Test
+        run: task test --output group --output-group-begin '::group::{{.TASK}}' --output-group-end '::endgroup::'
+
+  lint:
+    name: 🔍 Lint (${{ matrix.go-version }})
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [1.24.x, 1.25.x]
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v6
+
+      - name: ⬇️ Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: 🔍 Lint
+        uses: golangci/golangci-lint-action@v9
+        with:
+          version: v2.7.1
+
+  lint-jsonschema:
+    name: 📋 Lint JSON Schema
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v6
+
+      - name: ⬇️ Setup Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: 3.14
+
+      - name: ⬇️ Install check-jsonschema
+        run: python -m pip install 'check-jsonschema==0.27.3'
+
+      - name: 📋 Validate JSON Schema
+        run: check-jsonschema --check-metaschema website/src/public/schema.json
+
+  ci-status:
+    name: ✅ CI
+    runs-on: ubuntu-latest
+    needs: [build, test, lint, lint-jsonschema]
+    if: always()
+    steps:
+      - name: ✅ Check CI status
+        run: |
+          if [[ "${{ needs.build.result }}" != "success" ]] || \
+             [[ "${{ needs.test.result }}" != "success" ]] || \
+             [[ "${{ needs.lint.result }}" != "success" ]] || \
+             [[ "${{ needs.lint-jsonschema.result }}" != "success" ]]; then
+            echo "CI failed"
+            exit 1
+          fi
+          echo "CI passed"