diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1101714ac765bd..3e479dca20643d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,9 +41,36 @@ jobs:
           node-version: '22.18.0'
           cache: 'pnpm' # https://github.com/actions/setup-node/blob/main/docs/advanced-usage.md#caching-packages-dependencies
       - run: pnpm install
+      - name: Start process monitoring (macOS only)
+        if: runner.os == 'macOS'
+        run: |
+          # Start background process monitoring for diagnostics
+          (
+            echo "=== Process monitoring started at $(date) ==="
+            while true; do
+              echo "--- Process tree at $(date) ---"
+              ps -ef | grep -E "(node|tsc|lerna)" | grep -v grep || echo "No matching processes"
+              echo ""
+              sleep 30
+            done
+          ) > /tmp/process-monitor.log 2>&1 &
+          echo $! > /tmp/monitor-pid.txt
+          echo "Process monitor started with PID $(cat /tmp/monitor-pid.txt)"
       - run: pnpm build:ci
         env:
           NODE_OPTIONS: --max_old_space_size=6144
+      - name: Stop process monitoring and upload logs (macOS only)
+        if: always() && runner.os == 'macOS'
+        run: |
+          if [ -f /tmp/monitor-pid.txt ]; then
+            MONITOR_PID=$(cat /tmp/monitor-pid.txt)
+            kill $MONITOR_PID 2>/dev/null || true
+            echo "Process monitor stopped"
+            if [ -f /tmp/process-monitor.log ]; then
+              echo "=== Last 100 lines of process monitor log ==="
+              tail -100 /tmp/process-monitor.log
+            fi
+          fi
       - run: pnpm release:changelog
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}