ci: add pull request validation workflow

.github/workflows/build.yml

@@ -80,12 +80,16 @@ jobs:
         with:
           node-version: '22.16.0'
           cache: 'npm'
+          cache-dependency-path: |
+            package-lock.json
+            client/package-lock.json
+            server/package-lock.json
 
       - name: Install dependencies
         run: |
-          npm install
-          cd client && npm install
-          cd ../server && npm install
+          npm ci
+          npm ci --prefix client
+          npm ci --prefix server
       - name: Build Linux ${{ matrix.arch }} package
         run: ${{ matrix.package_command }}
         env:
@@ -111,15 +115,15 @@ jobs:
         with:
           node-version: '22.16.0'
           cache: 'npm'
+          cache-dependency-path: |
+            package-lock.json
+            client/package-lock.json
+            server/package-lock.json
       - name: Install dependencies
         run: |
-          npm install
-          cd client
-          npm install
-          cd ..
-          cd server
-          npm install
-          cd ..
+          npm ci
+          npm ci --prefix client
+          npm ci --prefix server
       - name: Build package
         run: npm run package:windows
         env:

.github/workflows/ci.yml

@@ -0,0 +1,106 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+env:
+  CI: true
+  NODE_VERSION: '22.16.0'
+
+jobs:
+  server:
+    name: Server test and build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: npm
+          cache-dependency-path: server/package-lock.json
+
+      - name: Install server dependencies
+        run: npm ci
+        working-directory: server
+
+      - name: Run server tests
+        run: npm test
+        working-directory: server
+
+      - name: Build server
+        run: npm run build
+        working-directory: server
+
+  client:
+    name: Client test and build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: npm
+          cache-dependency-path: client/package-lock.json
+
+      - name: Install client dependencies
+        run: npm ci
+        working-directory: client
+
+      - name: Run client tests
+        run: npm test
+        working-directory: client
+
+      - name: Build client
+        run: npm run build
+        working-directory: client
+
+  project-scripts:
+    name: Project scripts
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: npm
+          cache-dependency-path: package-lock.json
+
+      - name: Install root dependencies
+        run: npm ci
+
+      - name: Check packaging scripts syntax
+        run: |
+          node --check scripts/package.js
+          node --check scripts/resolve-build-version.js
+
+      - name: Resolve build version
+        run: node scripts/resolve-build-version.js