Add .github/workflows/copilot-setup-steps.yml for Copilot agent environment setup

Co-authored-by: rebornix <876920+rebornix@users.noreply.github.com>

Author: Copilot

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,49 @@
+name: Copilot Setup Steps
+
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  setup-environment:
+    name: Setup Development Environment
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          lfs: true
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22.14.x'
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+          architecture: 'x64'
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0'
+
+      - name: Install Python setuptools
+        run: pip install setuptools
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Check environment requirements
+        run: npm run check-env
+
+      - name: Verify installation
+        run: |
+          node --version
+          npm --version
+          python --version
+          dotnet --version