diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 000000000..d207b1802
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.go text eol=lf
diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
new file mode 100644
index 000000000..356d9b401
--- /dev/null
+++ b/.github/workflows/build-linux.yml
@@ -0,0 +1,77 @@
+name: Build(Linux packages)
+
+on:
+  push:
+    branches:
+      - master
+      - refactor-b # temp
+    tags:
+      - v*
+  pull_request:
+
+jobs:
+  build-linux:
+    name: Build (Unix-like OSes)
+    uses: ./.github/workflows/go-build.yml
+    with:
+      os-version: ubuntu-latest
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y devscripts debhelper fakeroot binutils-mips-linux-gnu binutils-aarch64-linux-gnu binutils-arm-linux-gnueabihf
+        docker pull mackerel/docker-mackerel-rpm-builder:c7
+        make rpm deb rpm-kcps deb-kcps rpm-stage deb-stage tgz
+        make crossbuild
+      upload-artifact-path: |
+        rpmbuild/RPMS/*/*.rpm
+        packaging/*.deb
+        snapshot/*.zip
+        snapshot/*.tar.gz
+        build/*.tar.gz
+  build-windows-x64:
+    name: Build (64bit Windows)
+    uses: ./.github/workflows/go-build.yml
+    with:
+      os-version: windows-2022
+      architecture: amd64
+      with-cgo: true
+      run: |
+        commit=$(git rev-parse --short HEAD)
+        mkdir build/
+        go build -o build/mackerel-agent.exe -ldflags="-X main.gitcommit=$commit" github.com/mackerelio/mackerel-agent
+        go build -o build/mackerel-agent-kcps.exe -ldflags="-X main.gitcommit=$commit -X github.com/mackerelio/mackerel-agent/config.apibase=http://198.18.0.16" github.com/mackerelio/mackerel-agent
+
+        cd wix
+        for p in $(./pluginlist.sh)
+        do
+          name=$(basename "$p")
+          go build -o "../build/$name.exe" "$p"
+        done
+        go build -o ../build/wrapper.exe wrapper/wrapper_windows.go wrapper/install.go
+        go build -o ../build/replace.exe replace/replace_windows.go replace/shell_windows.go
+        go build -o ../build/generate_wxs.exe generate_wxs/generate_wxs.go
+      upload-artifact-name: windows-build-artifacts-x64
+      upload-artifact-path: build/
+  build-windows-x86:
+    name: Build (32bit Windows)
+    uses: ./.github/workflows/go-build.yml
+    with:
+      os-version: windows-2022
+      architecture: '386'
+      with-cgo: true
+      run: |
+        commit=$(git rev-parse --short HEAD)
+        mkdir build/
+        go build -o build/mackerel-agent.exe -ldflags="-X main.gitcommit=$commit" github.com/mackerelio/mackerel-agent
+        go build -o build/mackerel-agent-kcps.exe -ldflags="-X main.gitcommit=$commit -X github.com/mackerelio/mackerel-agent/config.apibase=http://198.18.0.16" github.com/mackerelio/mackerel-agent
+
+        cd wix
+        for p in $(./pluginlist.sh)
+        do
+          name=$(basename "$p")
+          go build -o "../build/$name.exe" "$p"
+        done
+        go build -o ../build/wrapper.exe wrapper/wrapper_windows.go wrapper/install.go
+        go build -o ../build/replace.exe replace/replace_windows.go replace/shell_windows.go
+        go build -o ../build/generate_wxs.exe generate_wxs/generate_wxs.go
+      upload-artifact-name: windows-build-artifacts-x86
+      upload-artifact-path: build/
diff --git a/.github/workflows/go-build.yml b/.github/workflows/go-build.yml
new file mode 100644
index 000000000..1dadc80e7
--- /dev/null
+++ b/.github/workflows/go-build.yml
@@ -0,0 +1,99 @@
+name: Build(Go)
+run-name: Build (${{ inputs.os-version }}/${{ inputs.go-version }})
+
+on:
+  workflow_call:
+    inputs:
+      os-version:
+        description: 'GitHub-hosted runnners'
+        default: ubuntu-22.04
+        required: false
+        type: string
+      go-version:
+        description: 'target Go versions'
+        default: 1.22.x
+        required: false
+        type: string
+      architecture:
+        description: 'Target architecture for Go to use (GOARCH)'
+        default: ''
+        required: false
+        type: string
+      platform:
+        description: 'Target operating system for Go to use (GOOS)'
+        default: ''
+        required: false
+        type: string
+      with-cgo:
+        description: 'xx (CGO_ENABLED)'
+        default: false
+        type: boolean
+      run:
+        description: 'The commands to run in bash'
+        default: go build
+        required: false
+        type: string
+      upload-artifact-path:
+        description: >
+          A file, directory or wildcard pattern that describes what to upload.
+          If empty, the workflow will upload no artifacts.
+        default: ''
+        required: false
+        type: string
+      upload-artifact-name:
+        description: 'Artifact name'
+        default: artifact
+        required: false
+        type: string
+
+env:
+  DEBIAN_FRONTEND: noninteractive
+jobs:
+  run:
+    runs-on: ${{ inputs.os-version }}
+    env:
+      CGO_ENABLED: ${{ inputs.with-cgo && 1 || 0 }}
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v5
+      with:
+        go-version: ${{ inputs.go-version }}
+        cache: true
+    - name: Setup environment variables
+      id: spec
+      run: |
+        GOHOSTARCH="$(go env GOHOSTARCH)"
+        GOARCH="${INPUT_ARCHITECTURE:-$GOHOSTARCH}"
+        echo "GOARCH=$GOARCH" >>"$GITHUB_ENV"
+
+        GOHOSTOS="$(go env GOHOSTOS)"
+        GOOS="${INPUT_PLATFORM:-$GOHOSTOS}"
+        echo "GOOS=$GOOS" >>"$GITHUB_ENV"
+
+        if [[ $GOHOSTOS = windows && $CGO_ENABLED = 1 ]]
+        then
+          case "$GOARCH" in
+          *64)
+            echo 'MSYS=MINGW64' >>"$GITHUB_ENV" ;;
+          *)
+            echo 'MSYS=MINGW32' >>"$GITHUB_ENV" ;;
+          esac
+        fi
+      shell: bash
+    - if: env.MSYS != ''
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: ${{ env.MSYS }}
+        path-type: inherit
+        install: mingw-w64-i686-gcc
+    - if: env.MSYS == ''
+      run: ${{ inputs.run }}
+      shell: bash
+    - if: env.MSYS != ''
+      run: ${{ inputs.run }}
+      shell: msys2 {0}
+    - if: inputs.upload-artifact-path != ''
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ inputs.upload-artifact-name }}
+        path: ${{ inputs.upload-artifact-path }}
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 26e4d743c..700c12f75 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -8,57 +8,23 @@ on:
       - v*
 
 jobs:
-  test-linux:
-    name: Test (Linux)
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up Go 1.x
-        uses: actions/setup-go@v5
-        with:
-          go-version: 1.20.x
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v4
-      - uses: golangci/golangci-lint-action@v3
-      - run: make convention
-      - run: make cover
-      - run: test "$(gofmt -l . | wc -l)" = 0
-      - uses: shogo82148/actions-goveralls@v1
-        with:
-          path-to-profile: .profile.cov
-
-  test-windows:
-    name: Test (Windows)
-    # Please do not specify `windows-latest`
-    # Build process is complex then need to check operation.
-    runs-on: windows-2022
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: 1.20.x
-
-      - uses: golangci/golangci-lint-action@v3
-        with:
-          args: --timeout 5m
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**\go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
-      - name: Run Test
-        run: |
-          go test -short ./...
-        shell: bash
+  lint:
+    uses: mackerelio/workflows/.github/workflows/go-lint.yml@v1.1.0
+  convention:
+    uses: mackerelio/workflows/.github/workflows/setup-go-matrix.yml@v1.1.0
+    with:
+      run: make convention
+  test:
+    uses: mackerelio/workflows/.github/workflows/go-test.yml@v1.1.0
+    with:
+      # Please do not specify `windows-latest`
+      # Build process is complex then need to check operation.
+      os-versions: '["ubuntu-latest", "windows-2022"]'
 
   build-linux:
     name: Build (Linux)
     runs-on: ubuntu-latest
-    needs: test-linux
+    needs: test
     if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v')
     env:
       DEBIAN_FRONTEND: noninteractive
@@ -95,7 +61,7 @@ jobs:
   build-windows:
     name: Build (Windows)
     runs-on: windows-2022
-    needs: test-windows
+    needs: test
     if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v')
     strategy:
       matrix:
diff --git a/.gitignore b/.gitignore
index 43868cb9c..65ea65feb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 !.circleci
 !.dependabot
 !.github
+!.gitattributes
 !.gitignore
 !.goxc.json
 !.travis.yml
diff --git a/.golangci.yml b/.golangci.yml
index 571d18bff..ed7b28d12 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,3 +1,9 @@
+linters:
+  enable:
+    - gofmt
+linters-settings:
+  gofmt:
+    simplify: true
 issues:
   exclude-rules:
     - path: _test\.go
diff --git a/command/command_test.go b/command/command_test.go
index 4899da840..1de72cec9 100644
--- a/command/command_test.go
+++ b/command/command_test.go
@@ -240,10 +240,10 @@ func TestCollectHostParamWithChecks(t *testing.T) {
 	customIdentifier := "app.example.com"
 	conf := config.Config{
 		CheckPlugins: map[string]*config.CheckPlugin{
-			"chk1": &config.CheckPlugin{
+			"chk1": {
 				CustomIdentifier: nil,
 			},
-			"chk2": &config.CheckPlugin{
+			"chk2": {
 				CustomIdentifier: &customIdentifier,
 			},
 		},
diff --git a/metrics/agent.go b/metrics/agent.go
index cc08f8e87..f486e9495 100644
--- a/metrics/agent.go
+++ b/metrics/agent.go
@@ -37,7 +37,7 @@ func (g *AgentGenerator) CustomIdentifier() *string {
 func (g *AgentGenerator) PrepareGraphDefs() ([]*mkr.GraphDefsParam, error) {
 	meta := &pluginMeta{
 		Graphs: map[string]customGraphDef{
-			"agent.memory": customGraphDef{
+			"agent.memory": {
 				Label: "Agent Memory",
 				Unit:  "bytes",
 				Metrics: []customGraphMetricDef{
@@ -47,7 +47,7 @@ func (g *AgentGenerator) PrepareGraphDefs() ([]*mkr.GraphDefsParam, error) {
 					{Name: "heapSys", Label: "Heap Sys"},
 				},
 			},
-			"agent.runtime": customGraphDef{
+			"agent.runtime": {
 				Label: "Agent Runtime",
 				Unit:  "integer",
 				Metrics: []customGraphMetricDef{