ci: add separate run action

.github/workflows/build.yml

@@ -17,11 +17,7 @@ env:
 
 jobs:
   build:
-    name: build
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
     - name: Set up Go
@@ -32,10 +28,3 @@ jobs:
       run: go build -v ./...
     - name: go test
       run: go test -v ./...
-    - name: run omm
-      run: |
-        go build .
-        cat assets/sample-tasks.txt | ./omm import
-        ./omm 'test: a task'
-        ./omm tasks
-        ./.github/scripts/checknumtasks.sh "$(./omm tasks | wc -l | xargs)" 11

.github/workflows/run.yml

@@ -0,0 +1,37 @@
+name: run
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    paths:
+      - "go.*"
+      - "**/*.go"
+      - ".github/workflows/*.yml"
+
+permissions:
+  contents: read
+
+env:
+  GO_VERSION: '1.22.5'
+
+jobs:
+  run:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ env.GO_VERSION }}
+    - name: build
+      run: go build .
+    - name: run
+      run: |
+        cat assets/sample-tasks.txt | ./omm import
+        ./omm 'test: a task'
+        ./omm tasks
+        ./.github/scripts/checknumtasks.sh "$(./omm tasks | wc -l | xargs)" 11