feat(popup): add payment request status toast

[Kelbie]

What / Why

• add a dedicated payment-request variant to the shared payment status popup flow
• keep payment-request send feedback declarative instead of using an ad-hoc Nostr success popup
• let claim confirmation come from coco send:finalized events so the toast stays aligned with the actual send lifecycle

What changed

• extended the runtime payment status store and popup/toast config to support payment-request
• updated payment-request send flows to open the shared status toast with Waiting for recipient copy
• changed the payment status listener to confirm an active payment-request toast in place when the recipient claims the send
• kept the transaction deep-link behavior for confirmed states

Test plan

1. Run npm run lint
2. Run npm run type-check
3. Run npm run knip
4. Run npm run pretty:check and note it still fails because of the unrelated existing uniwind-types.d.ts worktree change that is not included in this commit

Notes / Risks

• Manual in-app verification is still needed for the full payment-request flow
• Unrelated worktree changes remain in uniwind-types.d.ts and coco, and are intentionally excluded from this PR

Made with Cursor