Jade wallet integration

[ardier16]

Describe the feature

Description:
Implement Jade hardware wallet connection, address derivation, and transaction signing.

Acceptance Criteria:

• Jade connection flow implemented (USB detection)
• PIN unlock dialog presented on connection
• Derive Liquid address by account index from Jade
• Fetch address balance via LWK + Esplora API
• PSET signing with Jade (multi-input support)
• Raw seed debug signer implemented for dev/test (env-gated: VITE_DEBUG_SEED)
• Wallet context provider with:
  • Connected address state
  • Balance state (LBTC and USDT)
  • Disconnect method
  • Error state handling
• Connection loss / timeout handling with user-facing error message
• Wrong PIN error handling with retry
• React hook e.g. useWallet() exposes all above
• Manual test: Connect Jade → see address → sign dummy PSET → confirm on device → tx succeeds

Dependencies:

• Requires Web project scaffold #22, LWK WASM + network config #23 complete

Notes:

• Use LWK WASM for Jade connection
• Debug seed mode disabled by default, only enable via VITE_DEBUG_SEED=true
• Balance updates triggered by page load and after each tx broadcast

[lilbonekit]

• Jade connection flow implemented (USB detection) – WalletProviderhas useEffect which subscribed to connect/disconnect event. Notice that lwk.jade doesn't have a native disconnect functionality. We reload a page on disconnection to fully kill Jade wasm instance.
• PIN unlock dialog presented on connection. No UI dialog implemented, but we have such a flag that comes from jade.getConnectionState(). So it's not a big deal to implement the specific UI Dialog once we have a design.
• Derive Liquid address by account index from Jade. There is getLastReceiveAddress() that returns the last unused address (BIP44 gap logic) and getVerifiedReceiveAddress() where Jade derives the address from its own seed and shows it on the device for the user to verify.
• Fetch address balance via LWK + Esplora API. syncWallet() returns all balances [assetId, amount]. Used a waterfall for this. IMPORTANT: Need to clarify VITE_WATERFALLS_RECIPIENT whether it's a public value.
• PSET signing with Jade (multi-input support). jade.sign(pset) receives PSET to the device. Jade handles per-input signing under the hood. NOTICE: busy mutex prevents polling from corrupting the serial frame during signing.
• Raw seed debug signer implemented for dev/test (env-gated: VITE_DEBUG_SEED). Implemented as SeedConnector, but env variable is named as VITE_DEBUG_MNEMONIC.
• Wallet context provider with: (No separate address field. It's calculated on-demand via getLastReceiveAddress(); balances are fetching via syncWallet and have NO named field like lbtc, usdt. Asset IDs are different for testnet/mainnet/regtest; disconnect() clears UI storage and reloads the page to fully kill Jade instance, but the real disconnection happens when the USB is disconnected, or the session is closed on the Jade device; errors info can be obtained in isError and error variables).
• Connection loss / timeout handling with user-facing error message. This is implemented in 3 ways: disconnect event, polling in WalletProvider with getConnectionState() and beforeunload event.
• Wrong PIN error handling with retry. Wrong PIN stored as a generic error string in state.error. BUT retry is not cleanly supported, since `lwk.jade has no disconnect method, so the WebSerial port stays open after a failed attempt. Pressing "Connect" again throws [Failed to execute 'open' on 'SerialPort': The port is already open. The only current workaround is a page reload. Needs a dedicated issue to track proper retry UX.
• React hook e.g. useWallet() exposes all above. Fully implemented.
• Manual test: Connect Jade → see address → sign dummy PSET → confirm on device → tx succeeds. Example of usage can be founded on Dashboard page.