[seanpatrickmay]

Summary

• Replace Brian’s visual direction with Elmir’s paper/teal, bordered-card design from design: Drawproof UI preview (v0 base, inspector finished, demo recorder) #204 in the live investor, builder, and inspector apps.
• Keep typed APIs, identity controls, transaction flows, evidence submission, audit signing, and Devnet behavior.
• Preserve the existing audit validation flow with an Elmir-styled section sidebar rather than swapping in the standalone mocked wizard.
• Record the user's selected design direction and supersede the previous styling guide.

Validation

• pnpm -r typecheck passes.
• Web: 23 tests pass; inspector: 77 tests pass.
• HTTP smoke: home, project, portfolio, builder, demo, inspector all return 200.
• git diff --check passes.
• Screenshots waived by user for speed; local site opened in browser.
• Existing copy-lint violations remain outside the new copy; newly introduced long copy was shortened.

Closes #205