Initial scaffold: Researcher Endorsement frontend

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

.github/skills/module-encapsulator/SKILL.md

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+---
+name: module-encapsulator
+description: "Groups related components, hooks, and types into feature-based modules (e.g., `modules/endorsements`) to improve encapsulation and reuse."
+license: MIT
+triggers:
+  - "group into module"
+  - "modularize feature"
+  - "create feature module"
+---
+
+# Module Encapsulator
+
+When to use this skill
+
+- Use when several components, hooks, and types belong to a single feature and should be colocated.
+- Triggered by requests to organize code by feature boundary rather than only by technical layer.
+
+Instructions
+
+1. First Step: Propose a module layout (e.g., `src/modules/endorsements/{components,hooks,types,services}`) and create an `index.ts` to re-export public APIs.
+
+2. Second Step: Move or copy existing files into the module, update imports to use the module boundary (e.g., `@/modules/endorsements`).
+
+3. Third Step: Add tests and README.md inside the module describing its public surface and example usage.
+
+Examples
+
+- Module index: `export * from './components/EndorseButton'; export * from './hooks/useEndorsements';`
+
+Additional Resources
+
+- Feature folder discussion: https://redux.js.org/style-guide/style-guide#structure
+
+Notes
+
+- Maintain clear public/private API: only `index.ts` exports become public; internal helpers remain in the module scope.