chore: harden runner hygiene with aggressive cleanup

.gitea/workflows/quality-assurance-template.yml

@@ -46,8 +46,14 @@ jobs:
         run: |
           echo "@mintel:registry=https://git.infra.mintel.me/api/packages/mmintel/npm" > .npmrc
           echo "//git.infra.mintel.me/api/packages/mmintel/npm/:_authToken=${{ secrets.NPM_TOKEN || secrets.MINTEL_PRIVATE_TOKEN || secrets.GITEA_PAT }}" >> .npmrc
+      - name: 🧹 Clean Runner Infrastructure
+        run: |
+          docker builder prune -f --filter "until=24h"
+          docker image prune -f --filter "until=24h"
+          docker system prune -f --volumes --filter "until=24h" || true
       - name: Install dependencies
         run: |
+          rm -rf .next .turbo node_modules || true
           pnpm store prune
           pnpm install --no-frozen-lockfile
       - name: 📦 Archive dependencies