Onboarding & Wallet Connect flow

[ardier16]

Describe the feature

Description:
Implement first-time wallet connection and borrower account creation flow.

Acceptance Criteria:

• Wallet Connect modal (on app first load):
  • Display Jade connection instructions
  • QR code for WalletConnect link (future; for now, USB detection)
  • "How it works" expandable info panel
  • Connect button → trigger Jade connection (Jade wallet integration #24)
  • Debug seed input (only if VITE_DEBUG_SEED=true)
  • Loading state during connection
• Create Borrower Account modal (post-wallet-connect):
  • Form fields: name (optional text input), accept terms (checkbox)
  • "Create Account" button
  • Success confirmation screen with "Go to Dashboard" link
  • Error handling if account creation fails
• Flow integration:
  • App checks if wallet connected on startup
  • If not: show Wallet Connect modal
  • On Jade connect: transition to Create Account modal
  • On account create success: redirect to Dashboard
• localStorage persistence:
  • Store wallet connected state
  • Store user preferences (name, account created at)
• Manual test: End-to-end flow from cold start → Dashboard

Dependencies:

• Requires Jade wallet integration #24 (Jade), Design tokens & shared UI components #27 (components) complete

Notes:

• SeedGate component can be removed or hidden (replaced by Jade connect)
• Modal state management via React state or Context
• Success = user account saved to indexer (if applicable)