Add Nym mixnet warning card on send scene

[Jon-edge]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

None

Description

Context

Asana: "Show warning card Nym is active at send scene while slider is loading" (P1). When the Nym mixnet is enabled for a currency, transaction calculation can take up to a minute due to privacy routing through the decentralized mixnet. During this time the user only sees a spinner with no explanation for the delay.

Changes

• Added isNymActive check in SendScene2 that reads networkPrivacy from currencyConfig.userSettings (falling back to defaultSettings)
• Added renderNymWarning() that shows an AlertCardUi4 warning card when Nym is active AND processingAmountChanged is true (i.e. the transaction is being calculated)
• Card animates in with fadeInUp and out with fadeOutDown via EdgeAnim
• Title: "Nym mixnet on" / Body: "Protecting your privacy—transaction can take a minute or longer."
• Added locale strings settings_nym_mixnet_warning_title and settings_nym_mixnet_warning_body

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

---

Note

Low Risk
UI-only change gated on an existing user setting and a loading flag; no transaction construction, signing, or network logic is modified.

Overview
Adds a new warning AlertCardUi4 to SendScene2 that appears only while the send calculation is loading (processingAmountChanged) and the wallet’s currencyConfig.userSettings.networkPrivacy is set to nym.

Updates English locale strings and the changelog to include the new Nym warning messaging shown during delayed transaction preparation.

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