Rewrite CI workflows: raw shell commands instead of marketplace actions

Host-mode act_runner can't resolve actions/checkout or actions/setup-node.
Replaced with direct git clone + npm ci + tsc + npm test.

.gitea/workflows/ci-p4-portal.yml

@@ -10,20 +10,16 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-node@v4
-        with:
-          node-version: '22'
+      - name: Checkout
+        run: |
+          git clone --depth=1 http://192.168.86.11:3005/jarvis/dd0c.git $GITHUB_WORKSPACE || true
+          cd $GITHUB_WORKSPACE
 
       - name: Install deps
-        run: npm ci
-        working-directory: products/04-lightweight-idp
+        run: cd $GITHUB_WORKSPACE/products/04-lightweight-idp && npm ci
 
       - name: Type check
-        run: npx tsc --noEmit
-        working-directory: products/04-lightweight-idp
+        run: cd $GITHUB_WORKSPACE/products/04-lightweight-idp && npx tsc --noEmit
 
       - name: Test
-        run: npm test
-        working-directory: products/04-lightweight-idp
+        run: cd $GITHUB_WORKSPACE/products/04-lightweight-idp && npm test