feat(web): listings page — ticker-style DataTable với toggle card view

Tạo mới trang /listings dạng bảng ticker-style theo spec TEC-3034.

- DataTable compact (row 36px, sticky header, alternating rows)
- Cột: #, Mã (GG-xxx), Quận, Loại, Giá, Δ30d, DT m², KL/Views
- Sortable theo Giá, Δ30d, DT m², KL/Views
- Filter inline: Loại giao dịch, Loại BĐS, Quận, Khoảng giá
- Toggle view: Table (default) ↔ Card grid (legacy component cũ)
- Pagination restyle compact, giữ nguyên API params
- Click row → navigate to detail page
- Dùng DataTable + PriceDelta từ @/components/design-system

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/ci.yml

@@ -70,6 +70,81 @@ jobs:
       - name: Build
         run: pnpm build
 
+  ai-services:
+    name: AI Services (Python) — Smoke
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    defaults:
+      run:
+        working-directory: libs/ai-services
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python 3.12
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+          cache: pip
+          cache-dependency-path: libs/ai-services/pyproject.toml
+
+      - name: Install dependencies (runtime + dev, no underthesea)
+        run: |
+          python -m pip install --upgrade pip
+          pip install \
+            "fastapi==0.115.0" \
+            "uvicorn[standard]==0.32.0" \
+            "xgboost==2.1.0" \
+            "numpy==1.26.4" \
+            "pydantic==2.9.0" \
+            "pydantic-settings==2.5.0" \
+            "httpx==0.27.0" \
+            "slowapi==0.1.9" \
+            "scikit-learn>=1.5.0" \
+            "pytest>=8.3.0" \
+            "pytest-asyncio>=0.24.0"
+
+      - name: Pytest (unit + health smoke)
+        env:
+          AI_CORS_ORIGINS: http://localhost:3000
+        run: pytest -q --ignore=tests/test_nlp.py
+
+      - name: Boot FastAPI + /health smoke
+        env:
+          AI_CORS_ORIGINS: http://localhost:3000
+        run: |
+          uvicorn app.main:app --host 127.0.0.1 --port 8000 &
+          PID=$!
+          for i in 1 2 3 4 5 6 7 8 9 10; do
+            if curl -sf http://127.0.0.1:8000/health; then
+              echo "health ok"
+              kill $PID
+              exit 0
+            fi
+            sleep 2
+          done
+          echo "health failed"
+          kill $PID || true
+          exit 1
+
+      - name: OpenAPI schema export (verifies /predict routes)
+        env:
+          AI_CORS_ORIGINS: http://localhost:3000
+        run: |
+          python - <<'PY'
+          import json, sys
+          from app.main import app
+          schema = app.openapi()
+          paths = schema.get("paths", {})
+          required = ["/avm/predict", "/avm/v2/predict", "/avm/industrial/predict", "/moderation/check", "/neighborhood/score"]
+          missing = [p for p in required if p not in paths]
+          if missing:
+              print("MISSING OpenAPI paths:", missing)
+              sys.exit(1)
+          print("OpenAPI paths OK:", sorted(paths.keys()))
+          PY
+
   e2e:
     name: E2E Tests
     needs: ci