Summary

• Adds the keyed prop to the Show component wrapping the current project in layout.tsx
• This lets us receive the resolved project directly instead of a Solid signal accessor
• Removes redundant const item = project(); if (!item) return guards throughout the render callback
• Passes project directly to child components and handlers instead of calling project()

Type safety improvement: no more optional chaining / null checks on a value that is guaranteed to exist inside the Show body.