Initial scaffold: Researcher Endorsement frontend

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.github/agents/ci-workflow.agent.md

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+---
+name: "CI Workflow Generator"
+description: "Scaffolds a GitHub Actions workflow for install, lint, test, and build; optionally builds and pushes Docker images."
+triggers:
+  - "create ci workflow"
+  - "generate github actions for frontend"
+  - "ci for vite react"
+---
+
+# CI Workflow Generator
+
+Purpose
+- Provide a reusable GitHub Actions workflow to run installs, linters, tests (Vitest), and build steps for a Vite app.
+
+Example prompts
+- "create .github/workflows/ci.yml to run tests and build"
+- "add workflow to build and push Docker image"
+
+Workflow outline
+- Runs on push/pull_request
+- Steps: checkout, cache node modules, install, run lint, run tests, run build
+- Optional: on push to main build and push Docker image to registry (requires secrets)
+
+Sample job YAML (high-level)
+```yaml
+name: CI
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+      - run: npm ci
+      - run: npm run lint --if-present
+      - run: npm run test --if-present
+      - run: npm run build
+```
+
+Notes
+- Include caching for node modules (actions/cache) to speed up runs.
+- If adding Docker publish, recommend using `docker/build-push-action` with `secrets.DOCKERHUB_TOKEN` or GHCR.