Optimize merge queue to only run E2E and integrate prettier into lint (#18459)

## Summary

- **Merge queue optimization**: Created a dedicated
`ci-merge-queue.yaml` workflow that only runs Playwright E2E tests on
`ubuntu-latest-8-cores`. Removed `merge_group` trigger from all 7
existing CI workflows (front, server, shared, website, sdk, zapier,
docker-compose). The merge queue goes from ~30+ parallel jobs to a
single focused E2E job.
- **Label-based merge queue simulation**: Added `run-merge-queue` label
support so developers can trigger the exact merge queue E2E pipeline on
any open PR before it enters the queue.
- **Prettier in lint**: Chained `prettier --check` into `lint` and
`prettier --write` into `lint --configuration=fix` across `nx.json`
defaults, `twenty-front`, and `twenty-server`. Prettier formatting
errors are now caught by `lint` and fixed by `lint:fix` /
`lint:diff-with-main --configuration=fix`.

## After merge (manual repo settings)

Update GitHub branch protection required status checks:
1. Remove old per-workflow merge queue checks (`ci-front-status-check`,
`ci-e2e-status-check`, `ci-server-status-check`, etc.)
2. Add `ci-merge-queue-status-check` as the required check for the merge
queue

.github/workflows/ci-front.yaml

@@ -1,10 +1,8 @@
-name: CI Front and E2E
+name: CI Front
 
 on:
   pull_request:
 
-  merge_group:
-
 permissions:
   contents: read
 
@@ -29,15 +27,6 @@ jobs:
         packages/twenty-shared/**
         packages/twenty-sdk/**
         !packages/twenty-sdk/package.json
-  changed-files-check-e2e:
-    uses: ./.github/workflows/changed-files.yaml
-    with:
-      files: |
-        packages/**
-        !packages/create-twenty-app/package.json
-        !packages/twenty-sdk/package.json
-        playwright.config.ts
-        .github/workflows/ci-front.yaml
   front-sb-build:
     needs: changed-files-check
     if: needs.changed-files-check.outputs.any_changed == 'true'
@@ -257,117 +246,6 @@ jobs:
       #     name: frontend-build
       #     path: packages/twenty-front/build
       #     retention-days: 1
-  e2e-test:
-    runs-on: ubuntu-latest
-    needs: [changed-files-check-e2e, front-build]
-    if: |
-      always() &&
-      needs.changed-files-check-e2e.outputs.any_changed == 'true' &&
-      (needs.front-build.result == 'success' || needs.front-build.result == 'skipped') &&
-      (github.event_name == 'push' || github.event_name == 'merge_group' || (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'run-e2e')))
-    timeout-minutes: 30
-    env:
-      NODE_OPTIONS: "--max-old-space-size=10240"
-    services:
-      postgres:
-        image: twentycrm/twenty-postgres-spilo
-        env:
-          PGUSER_SUPERUSER: postgres
-          PGPASSWORD_SUPERUSER: postgres
-          ALLOW_NOSSL: "true"
-          SPILO_PROVIDER: "local"
-        ports:
-          - 5432:5432
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-      redis:
-        image: redis
-        ports:
-          - 6379:6379
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 10
-      - uses: actions/setup-node@v4
-        with:
-          node-version: lts/*
-
-      - name: Check system resources
-        run: |
-          echo "Available memory:"
-          free -h
-          echo "Available disk space:"
-          df -h
-          echo "CPU info:"
-          lscpu
-
-      - name: Install dependencies
-        uses: ./.github/actions/yarn-install
-
-      - name: Build twenty-shared
-        run: npx nx build twenty-shared
-
-      - name: Install Playwright Browsers
-        run: npx nx setup twenty-e2e-testing
-
-      - name: Setup environment files
-        run: |
-          cp packages/twenty-front/.env.example packages/twenty-front/.env
-          npx nx reset:env:e2e-testing-server twenty-server
-
-      # - name: Download frontend build artifact
-      #   if: needs.front-build.result == 'success'
-      #   uses: actions/download-artifact@v4
-      #   with:
-      #     name: frontend-build
-      #     path: packages/twenty-front/build
-
-      # - name: Build frontend (if not available from front-build)
-      #   if: needs.front-build.result == 'skipped'
-      #   run: NODE_ENV=production NODE_OPTIONS="--max-old-space-size=10240" npx nx build twenty-front
-
-      - name: Build frontend
-        run: NODE_ENV=production NODE_OPTIONS="--max-old-space-size=10240" npx nx build twenty-front
-
-      - name: Build server
-        run: npx nx build twenty-server
-
-      - name: Create and setup database
-        run: |
-          PGPASSWORD=postgres psql -h localhost -p 5432 -U postgres -d postgres -c 'CREATE DATABASE "default";'
-          PGPASSWORD=postgres psql -h localhost -p 5432 -U postgres -d postgres -c 'CREATE DATABASE "test";'
-          npx nx run twenty-server:database:reset
-
-      - name: Start server
-        run: |
-          npx nx start twenty-server &
-          echo "Waiting for server to be ready..."
-          timeout 60 bash -c 'until curl -s http://localhost:3000/health; do sleep 2; done'
-
-      - name: Start frontend
-        run: |
-          npm_config_yes=true npx serve -s packages/twenty-front/build -l 3001 &
-          echo "Waiting for frontend to be ready..."
-          timeout 60 bash -c 'until curl -s http://localhost:3001; do sleep 2; done'
-
-      - name: Start worker
-        run: |
-          npx nx run twenty-server:worker &
-          echo "Worker started"
-
-      - name: Run Playwright tests
-        run: npx nx test twenty-e2e-testing
-
-      # - uses: actions/upload-artifact@v4
-      #   if: always()
-      #   with:
-      #     name: playwright-report
-      #     path: packages/twenty-e2e-testing/run_results/
-      #     retention-days: 30
-
   ci-front-status-check:
     if: always() && !cancelled()
     timeout-minutes: 5
@@ -385,12 +263,3 @@ jobs:
       - name: Fail job if any needs failed
         if: contains(needs.*.result, 'failure')
         run: exit 1
-  ci-e2e-status-check:
-    if: always() && !cancelled()
-    timeout-minutes: 5
-    runs-on: ubuntu-latest
-    needs: [changed-files-check-e2e, e2e-test]
-    steps:
-      - name: Fail job if any needs failed
-        if: contains(needs.*.result, 'failure')
-        run: exit 1

.github/workflows/ci-merge-queue.yaml

@@ -0,0 +1,118 @@
+name: CI Merge Queue
+
+on:
+  merge_group:
+
+  pull_request:
+    types: [labeled, synchronize, opened, reopened]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  e2e-test:
+    if: >
+      github.event_name == 'merge_group' ||
+      (github.event_name == 'pull_request' &&
+       contains(github.event.pull_request.labels.*.name, 'run-merge-queue'))
+    runs-on: ubuntu-latest-8-cores
+    timeout-minutes: 30
+    env:
+      NODE_OPTIONS: "--max-old-space-size=10240"
+    services:
+      postgres:
+        image: twentycrm/twenty-postgres-spilo
+        env:
+          PGUSER_SUPERUSER: postgres
+          PGPASSWORD_SUPERUSER: postgres
+          ALLOW_NOSSL: "true"
+          SPILO_PROVIDER: "local"
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+      redis:
+        image: redis
+        ports:
+          - 6379:6379
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 10
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+
+      - name: Install dependencies
+        uses: ./.github/actions/yarn-install
+
+      - name: Build twenty-shared
+        run: npx nx build twenty-shared
+
+      - name: Install Playwright Browsers
+        run: npx nx setup twenty-e2e-testing
+
+      - name: Setup environment files
+        run: |
+          cp packages/twenty-front/.env.example packages/twenty-front/.env
+          npx nx reset:env:e2e-testing-server twenty-server
+
+      - name: Build frontend
+        run: NODE_ENV=production npx nx build twenty-front
+
+      - name: Build server
+        run: npx nx build twenty-server
+
+      - name: Create and setup database
+        run: |
+          PGPASSWORD=postgres psql -h localhost -p 5432 -U postgres -d postgres -c 'CREATE DATABASE "default";'
+          PGPASSWORD=postgres psql -h localhost -p 5432 -U postgres -d postgres -c 'CREATE DATABASE "test";'
+          npx nx run twenty-server:database:reset
+
+      - name: Start server
+        run: |
+          npx nx start twenty-server &
+          echo "Waiting for server to be ready..."
+          timeout 60 bash -c 'until curl -s http://localhost:3000/health; do sleep 2; done'
+
+      - name: Start frontend
+        run: |
+          npm_config_yes=true npx serve -s packages/twenty-front/build -l 3001 &
+          echo "Waiting for frontend to be ready..."
+          timeout 60 bash -c 'until curl -s http://localhost:3001; do sleep 2; done'
+
+      - name: Start worker
+        run: |
+          npx nx run twenty-server:worker &
+          echo "Worker started"
+
+      - name: Run Playwright tests
+        run: npx nx test twenty-e2e-testing
+
+      - name: Upload Playwright results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-results
+          path: |
+            packages/twenty-e2e-testing/run_results/
+            packages/twenty-e2e-testing/test-results/
+          retention-days: 7
+
+  ci-merge-queue-status-check:
+    if: always() && !cancelled()
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    needs: [e2e-test]
+    steps:
+      - name: Fail job if any needs failed
+        if: contains(needs.*.result, 'failure')
+        run: exit 1

.github/workflows/ci-sdk.yaml

@@ -1,8 +1,6 @@
 name: CI SDK
 
 on:
-  merge_group:
-
   pull_request:
 
 permissions:

.github/workflows/ci-server.yaml

@@ -3,8 +3,6 @@ name: CI Server
 on:
   pull_request:
 
-  merge_group:
-
 permissions:
   contents: read
 

.github/workflows/ci-shared.yaml

@@ -1,8 +1,6 @@
 name: CI Shared
 
 on:
-  merge_group:
-
   pull_request:
 
 permissions:

.github/workflows/ci-test-docker-compose.yaml

@@ -4,8 +4,6 @@ permissions:
   contents: read
 
 on:
-  merge_group:
-
   pull_request:
 
 concurrency:

.github/workflows/ci-website.yaml

@@ -4,8 +4,6 @@ permissions:
   contents: read
 
 on:
-  merge_group:
-
   pull_request:
 
 concurrency:

.github/workflows/ci-zapier.yaml

@@ -3,8 +3,6 @@ name: CI Zapier
 on:
   pull_request:
 
-  merge_group:
-
 permissions:
   contents: read