feat: introduce new quality gates, Node.js syntax checks, and manual smoke test status validation

.github/workflows/quality-gates.yml

@@ -0,0 +1,40 @@
+name: Quality Gates
+
+on:
+  pull_request:
+  push:
+    branches:
+      - dev
+
+permissions:
+  contents: read
+
+jobs:
+  quality-gates:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.24.x"
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+          cache-dependency-path: webui/package-lock.json
+
+      - name: Refactor Line Gate
+        run: ./tests/scripts/check-refactor-line-gate.sh
+
+      - name: Unit Gates (Go + Node)
+        run: ./tests/scripts/run-unit-all.sh
+
+      - name: WebUI Build Gate
+        run: |
+          npm ci --prefix webui
+          npm run build --prefix webui

.github/workflows/release-artifacts.yml

@@ -31,6 +31,12 @@ jobs:
           cache: "npm"
           cache-dependency-path: webui/package-lock.json
 
+      - name: Release Blocking Gates
+        run: |
+          ./tests/scripts/check-stage6-manual-smoke.sh
+          ./tests/scripts/check-refactor-line-gate.sh
+          ./tests/scripts/run-unit-all.sh
+
       - name: Build WebUI
         run: |
           npm ci --prefix webui