saitejasanka7-alt/Echoless ? reverse-engineered prompt

Build me a web app called ECHOLESS that helps a team remember the warnings and near misses from past projects so they do not repeat the same mistakes.

I want a clean dashboard where someone can paste in a new project idea or architecture plan, then the app looks for similar past situations, shows the risks it has seen before, and explains what happened last time, what changed, and what still looks dangerous. It should also have a memory browser for saved lessons, a timeline view of past warnings and outcomes, and a guided demo mode that walks people through the whole flow.

Please make the results feel trustworthy, with a clear breakdown of what came from historical memory, what came from the current input, and what is the system’s interpretation. If there is a simple way to save a new lesson back into memory, include that too. If anything needs current docs or APIs, look them up online and use sensible defaults.