ci: add GitHub Actions workflow for lint, build, unit test, and e2e test

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

Author: koki-develop

.github/workflows/ci.yml

@@ -0,0 +1,83 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions: {}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+      - run: golangci-lint run
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+      - run: go build -o server ./cmd/server
+
+  unit-test:
+    name: Unit Test
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+      - run: go test ./...
+
+  e2e-test:
+    name: E2E Test
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+      - name: Start sandbox service
+        run: docker compose up --build -d
+      - name: Wait for service to be ready
+        run: |
+          for i in $(seq 1 30); do
+            if curl -s -o /dev/null http://localhost:8080/; then
+              echo "Service is ready"
+              exit 0
+            fi
+            echo "Waiting for service... ($i/30)"
+            sleep 2
+          done
+          echo "Service failed to start"
+          exit 1
+      - name: Run E2E tests
+        run: go test -tags e2e ./e2e/...
+      - name: Show logs on failure
+        if: failure()
+        run: docker compose logs