chore: consolidate platform split checks

.gitea/workflows/dependency-audit.yml

@@ -0,0 +1,34 @@
+name: Dependency Audit
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  schedule:
+    - cron: "23 3 * * 1"
+
+jobs:
+  dependency-audit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+      - name: Install backend dev audit dependencies
+        run: |
+          python -m venv .venv
+          .venv/bin/python -m pip install --upgrade pip
+          .venv/bin/python -m pip install -r requirements-release.txt
+          .venv/bin/python -m pip install 'pip-audit>=2.9,<3'
+      - name: Install WebUI release dependencies
+        working-directory: webui
+        run: |
+          node -e "const fs=require('fs'); const pkg=JSON.parse(fs.readFileSync('package.json')); const rel=JSON.parse(fs.readFileSync('package.release.json')); pkg.dependencies=rel.dependencies; fs.writeFileSync('package.json', JSON.stringify(pkg, null, 2) + '\n');"
+          npm install
+      - name: Run dependency audits
+        run: bash scripts/check-dependency-audits.sh