mohitsaitummalapalli-tech/evidence-lens ? reverse-engineered prompt

Build me a clean Next.js web app called EvidenceLens for investigating claims and evidence. It should feel like a professional workbench for journalists or fact checkers, with a dark theme, a clear header and footer, and a main workspace that lets someone paste in a claim, add some context, and see a place to upload images, audio, video, or documents later.

I want the homepage to show the core workflow in a simple way, including an overview of the investigation pipeline and an empty workspace area that looks ready for future evidence results, claim review, and provenance details. Please also include basic API routes for a health check and an investigation endpoint, even if the deeper logic is still stubbed for now.

Make sure the app has proper loading, error, and not found states, uses TypeScript, and is ready to run and deploy cleanly. If you need to look up current docs online while building, feel free to do that.