Connecting to Solana or Btc on Phantom wallet shows as no wallet connected

[linear]

Widget was connected to phantom on solana. I disconnected then reconnected choosing BTC. Initially looks like the wallet is not connected but if you select the connect wallet button you can see that BTC is connected. Once you select BTC in the swap asset, the wallet reflects showing its connected and populates the address

[Hobie1Kenobi]

Approach

The bug occurs because the UI's "connected" state check is chain-aware only after a swap asset selection triggers a re-read. When Phantom switches from Solana → BTC on reconnect, the connection state store likely still references the previously-disconnected Solana session, while the BTC session is registered but not surfaced to the reactive UI layer.

Root cause hypothesis: The wallet connection state (e.g., account/address or isConnected) is keyed or scoped to the Solana chain. On reconnect with BTC, Phantom fires a different chain-specific event (e.g., accountChanged on Bitcoin vs Solana), but the widget's listener either doesn't subscribe to the BTC event or doesn't update the same reactive store. The UI then renders "not connected" until a downstream action (selecting BTC in swap) forces a re-read of the current wallet state.

Fix plan:

1. Audit the wallet connection hook/store — identify which chain-specific events are subscribed to (likely only Solana's connect/accountChanged).
2. Add listeners for Phantom's BTC chain events (Phantom exposes Bitcoin via window.phantom?.bitcoin).
3. Ensure the reactive isConnected and address state updates on any supported chain's connect/disconnect events, not just the initially-selected chain.
4. Add a chain-change listener (phantom.solana.on('disconnect') → re-evaluate overall connection) so switching chains mid-session also updates UI immediately.
5. Add a guard: after connect() resolves, explicitly re-read the active chain and update state regardless of which chain was selected.

Deliverables

• Patched wallet connection hook/store with multi-chain event listeners (Solana + BTC)
• UI state correctly reflects connected status immediately after reconnect on either chain
• No regression on initial Solana-only connect flow
• Brief PR description with before/after testing steps

ETA

3–4 days from assignment

Payout Address

0x408f39B19266022FeC03076091e59D1f4f163658