diff --git a/.github/workflows/check-types.yml b/.github/workflows/check-types.yml
deleted file mode 100644
index 93295df..0000000
--- a/.github/workflows/check-types.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: Check Types
-on:
-  pull_request:
-  push:
-jobs:
-  check_types:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
-        with:
-          node-version-file: ".node-version"
-      - name: Install dependencies
-        run: npm ci
-      - name: Check types
-        run: tsc -p tsconfig.json
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..b80ddec
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,87 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - name: Lint GitHub Action workflows
+        uses: raven-actions/actionlint@v2
+
+  npm-install:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm install --package-lock-only --ignore-scripts --no-audit --no-fund
+      - run: git diff --exit-code -- package-lock.json
+
+  eslint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm ci
+      - run: npm run lint:eslint
+
+  prettier:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm ci
+      - run: npm run lint:prettier
+
+  tsc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm ci
+      - run: npm run lint:tsc
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version-file: .node-version
+          cache: npm
+      - run: npm ci
+      - run: npm test
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
deleted file mode 100644
index 4961e27..0000000
--- a/.github/workflows/lint.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: Lint
-on:
-  pull_request:
-  push:
-jobs:
-  run_lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
-        with:
-          node-version-file: ".node-version"
-      - name: Install dependencies
-        run: npm ci
-      - name: Run ESLint
-        run: npm run lint
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
deleted file mode 100644
index 2dee730..0000000
--- a/.github/workflows/test.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: Test
-on:
-  pull_request:
-  push:
-jobs:
-  run_tests:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
-        with:
-          node-version-file: ".node-version"
-      - name: Install dependencies
-        run: npm ci
-      - name: Run tests
-        run: npm test