ci: add PR check workflow

- Add GitHub Actions workflow for pull request checks
- Setup Go 1.24 environment
- Run tests with coverage collection
- Upload coverage to Codecov
- Cache Go modules for faster builds

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: AnnatarHe

.github/workflows/pr-check.yaml

@@ -0,0 +1,58 @@
+name: PR Check
+
+on:
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - reopened
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.24"
+
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Generate mocks
+        run: |
+          go install github.com/vektra/mockery/v3@v3.5.0
+          mockery
+
+      - name: Run tests with coverage
+        run: go test -timeout 3m -coverprofile=coverage.txt -covermode=atomic ./...
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5.4.3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.txt
+          flags: unittests
+          name: codecov-umbrella
+          fail_ci_if_error: false