Fix CI/CD workflows to run from code/ subdirectory

All workflows were running npm commands from repo root which lacks
the test scripts. Add working-directory: code defaults and
cache-dependency-path for all jobs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: apartsin

.github/workflows/ci.yml

@@ -9,12 +9,16 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: code
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: npm
+          cache-dependency-path: code/package-lock.json
       - run: npm ci
       - run: npm run build
       - run: npm run lint
@@ -24,12 +28,16 @@ jobs:
   e2e:
     runs-on: ubuntu-latest
     needs: test
+    defaults:
+      run:
+        working-directory: code
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: npm
+          cache-dependency-path: code/package-lock.json
       - run: npm ci
       - run: npm run build
       - run: npx playwright install --with-deps chromium
@@ -38,4 +46,4 @@ jobs:
         if: failure()
         with:
           name: playwright-report
-          path: playwright-report/
+          path: code/playwright-report/

.github/workflows/deploy-production.yml

@@ -11,12 +11,16 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     if: github.event.inputs.confirm == 'DEPLOY'
+    defaults:
+      run:
+        working-directory: code
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: npm
+          cache-dependency-path: code/package-lock.json
       - run: npm ci
       - run: npm run build
       - run: npm run test:unit

.github/workflows/deploy-staging.yml

@@ -7,12 +7,16 @@ on:
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: code
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: npm
+          cache-dependency-path: code/package-lock.json
       - run: npm ci
       - run: npm run build
       - run: npm run test:unit