Create CONTRIBUTING.md

CONTRIBUTING.md

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+# Contributing
+
+Thanks for helping improve Claw3D.
+
+Please use GitHub Issues for bugs, feature requests, and questions about planned work.
+
+## Before you start
+- Install OpenClaw and confirm the gateway runs locally.
+- This repo is UI-only and reads config from `~/.openclaw` with legacy fallback to `~/.moltbot` or `~/.clawdbot`.
+- It does not run or build the gateway from source.
+- Read `CODE_DOCUMENTATION.md` for the repo code map, extension points, and the recommended onboarding order through the codebase.
+- Use `ROADMAP.md` if you are looking for starter work or near-term priorities.
+
+## Local setup
+```bash
+git clone https://github.com/iamlukethedev/Claw3D.git
+cd claw3d
+npm install
+cp .env.example .env
+npm run dev
+```
+
+## Support And Routing
+- Use the GitHub bug and feature templates for normal public contributions.
+- Use `SUPPORT.md` for help-routing and maintainer contact guidance.
+- Use `SECURITY.md` for sensitive security reports, and avoid posting exploit details in public issues.
+
+## Testing
+- `npm run lint`
+- `npm run typecheck`
+- `npm run test`
+- `npm run e2e` (requires `npx playwright install`)
+
+If your change touches generated UX audit artifacts, clean them before committing with `npm run cleanup:ux-artifacts`.
+
+## Pull requests
+- Keep PRs focused and small.
+- Prefer one task per PR.
+- Include the tests you ran.
+- Link to the relevant issue when possible.
+- If you changed gateway behavior, call it out explicitly.
+- Update docs when the user-facing behavior or architecture changes.
+- If you touched bundled assets, vendored code, or dependency/licensing posture, update the relevant `THIRD_PARTY_*` documentation in the same PR.
+
+## Reporting issues
+When filing an issue, please include:
+- Reproduction steps
+- OS and Node version
+- Any relevant logs or screenshots
+
+## Minimal PR template
+```md
+## Summary
+- 
+
+## Testing
+- [ ] Not run (explain why)
+- [ ] `npm run lint`
+- [ ] `npm run typecheck`
+- [ ] `npm run test`
+- [ ] `npm run e2e`
+
+## AI-assisted
+- [ ] AI-assisted (briefly describe what and include prompts/logs if helpful)
+```
+
+## Minimal issue template
+```md
+## Summary
+
+## Steps to reproduce
+1.
+
+## Expected
+
+## Actual
+
+## Environment
+- OS:
+- Node:
+- UI version/commit:
+- Gateway running? (yes/no)
+
+## Logs/screenshots
+```