Build the investor dApp primitives and screen layout

[luchobonatti]

User story / Problem statement

There is no vault UI. Every later item renders into the same shell, so the shell comes first.

Expected outcome

The prototype's layout renders from static props.

Acceptance criteria

• Metrics strip, request card, position card and lifecycle panel render
• Components take props and hold no state
• No contract calls anywhere in this slice
• Layout holds at desktop and mobile widths
• Each component is tested across its prop variants

Technical notes

LP Vault Prototype v2 is the reference. Its state rail is prototype scaffolding and does not ship: the app derives state from chain reads. Blocked by #82. Parent: #30.

[pragalli]

Design references live in #27, including the reference wireframe:

https://claude.ai/design/p/9d3541af-9c4c-4e0a-a5b9-d7428f63738c?file=LP+Vault+Prototype+v2.dc.html