Initial scaffold: Researcher Endorsement frontend

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

.github/skills/build-run-script/SKILL.md

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+---
+name: build-run-script
+description: "Ensures `package.json` scripts for dev, build, preview, lint, test, and format are present and validates environment variable usage before running."
+license: MIT
+triggers:
+  - "add npm scripts"
+  - "validate env vars"
+  - "run dev build"
+---
+
+# Build & Run Script
+
+When to use this skill
+
+- Use when bootstrapping the project's `package.json` scripts or when validating build-time env variables.
+- Triggered by requests to add/update `dev`, `build`, `preview`, or helper scripts.
+
+Instructions
+
+1. First Step: Ensure `package.json` contains scripts:
+  - `dev`: `vite`
+  - `build`: `vite build`
+  - `preview`: `vite preview --port 4173`
+  - `lint`, `test`, `format` helpers as needed.
+
+2. Second Step: Add a script `start:ci` if CI needs to build and run a static server (e.g., `serve -s dist`).
+
+3. Third Step: Validate that required `VITE_` variables are documented and, optionally, verified at runtime with a small pre-flight check.
+
+Examples
+
+- `npm run dev` to start local dev server; `npm run build && npm run preview` to test production output locally.
+
+Notes
+
+- Encourage `cross-env` or platform-neutral approaches when setting env vars in scripts.