chore: align deployment pipeline with klz-2026 standards

- Ported pagespeed-sitemap.ts and integrated @lhci/cli
- Enriched deploy.yml with parallel QA, maintenance, and PageSpeed jobs
- Refined environment detection (main/beta/rc/prod)
- Consolidated workflows and cleaned up package.json

.gitea/workflows/ci.yml

@@ -1,39 +0,0 @@
-name: 🧪 CI (QA)
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-
-jobs:
-  qa:
-    name: 🧪 Quality Assurance
-    runs-on: docker
-    container:
-      image: catthehacker/ubuntu:act-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          version: 10
-
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
-        env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-
-      - name: 🧪 Run Checks
-        run: |
-          pnpm lint
-          pnpm build