refactor(repo): replace legacy openflare-server with Wavelet rename

Delete the old monolithic openflare-server implementation and rename
Wavelet/ to openflare-server/ to complete the migration consolidation.
Update CI workflows, agent Dockerfiles, and deployment docs for the new
layout (frontend/, docker/Dockerfile).

.github/workflows/github-pages.yml

@@ -17,14 +17,14 @@ jobs:
         env:
           CI: ""
         run: |
-          cd openflare-server/web
+          cd openflare-server/frontend
           corepack enable
           pnpm install --frozen-lockfile
-          pnpm build
+          pnpm build:embed
 
       - name: Deploy 🚀
         uses: JamesIves/github-pages-deploy-action@releases/v3
         with:
           ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
           BRANCH: gh-pages # The branch the action should deploy to.
-          FOLDER: openflare-server/web/build # The folder the action should deploy.
+          FOLDER: openflare-server/frontend/out # The folder the action should deploy.