ci: replace setup actions with apt-get for offline runner compatibility

.gitea/workflows/cd.yaml

@@ -8,28 +8,29 @@ on:
 jobs:
   test-and-lint:
     name: Code Quality & Testing
-    runs-on: fifa2026-dedicated-runner
+    runs-on: ewoooc-dedicated-runner
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
 
-      - name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-          cache: 'pip'
-          
+      - name: Setup Python Environment
+        run: |
+          apt-get update -qq
+          apt-get install -y -qq python3-pip python3-venv curl
+          python3 -m venv venv
+          echo "PATH=$PWD/venv/bin:$PATH" >> $GITHUB_ENV
+
       - name: Install Backend Dependencies
-        run: pip install -r platform/backend/requirements.txt pytest
+        run: |
+          pip install -r platform/backend/requirements.txt pytest
         
       - name: Run Backend Quant Engine Tests
         run: pytest platform/backend/app/analytics/ || true
 
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '18'
-          cache: 'npm'
+      - name: Setup Node.js Environment
+        run: |
+          curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
+          apt-get install -y nodejs
 
       - name: Run Frontend Linting
         run: |
@@ -40,7 +41,7 @@ jobs:
   deploy-docker:
     name: Deploy to Production VM via Rsync
     needs: test-and-lint
-    runs-on: fifa2026-dedicated-runner
+    runs-on: ewoooc-dedicated-runner
     if: github.ref == 'refs/heads/main'
     
     steps: