ci: run npm in soulfield-v2-mvp working directory (fix exit 127)

Author: mrhpython

.github/workflows/ci.yml

@@ -1,40 +1,26 @@
-name: SoulField CI
-
+name: CI
 on:
   push:
-    branches: [ main ]
   pull_request:
-    branches: [ main ]
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
 
 jobs:
   test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [20.x, 22.x] # LTS + current
     defaults:
       run:
         working-directory: soulfield-v2-mvp
+    strategy:
+      matrix:
+        node: [20.x, 22.x]
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Node ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: ${{ matrix.node }}
           cache: npm
           cache-dependency-path: soulfield-v2-mvp/package-lock.json
-
       - name: Install
         run: npm ci
-        env:
-          CI: true
-
       - name: Run tests
         run: npm test
         env: