#7 Issue 7: [Wallet] "Link Physical Device"

[elizabetheonoja-art]

Description:
Onboarding flow to link a physical meter serial number to a blockchain Meter ID.

Acceptance Criteria:

[ ] Input: Serial Number (on device sticker).

[ ] Backend verifies Serial against database.

[ ] Trigger register_meter transaction on-chain.

Priority: Low
Labels: onboarding, iot