Prototype: Houdini private-send reorg (Proposal B)

[j0ntz]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

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)

Description

Prototype of the redesigned Houdini "private send" flow — Proposal B (today's live card order). Review-only and fully navigable; nothing talks to Houdini and every value (amounts, rate, recipient chains, address, fee, destination tag) is hard-coded so a reviewer can walk the complete flow.

Asana: https://app.asana.com/0/1215088146871429/1216019112895454

What it adds

• New HoudiniSendScene reachable from a wallet's Send button (the wallet Send button is routed to the prototype on this branch; the production send scene is untouched).
• Two linked amounts, You send and Recipient gets, recomputed from a hard-coded rate (e.g. 1 BTC = 36.5 ETH / 350 XMR / 620 SOL). The edited side is the guaranteed amount; the other shows an estimate (~).
• Recipient receives asset picker over a hard-coded chain list (BTC, ETH, XMR, SOL), reusing RadioListModal with CryptoIcons.
• Private send toggle. Inline quote row (rate, "Houdini private" label, cosmetic expiry countdown), network fee row, and a Destination Tag row shown only for memoNeeded chains (XMR).
• AddressTile2 reused as-is with a hard-coded filled address. SafeSlider always submits (no Next, no confirmation scene).
• Success paths: same-asset & non-private shows the Transaction Success modal then Transaction Details; cross-asset or private reuses SwapSuccessScene.

The scene is parameterized by a layout: 'a' | 'b' param so Proposal A and Proposal B differ only in card grouping. This branch passes 'b': a single "Send from Wallet" card, then an address card grouping Send To Address + Recipient receives + the two amounts, then Private send, then a separate lower card for rate, network fee, and the conditional destination tag.

Testing
Driven end to end on the iOS simulator via maestro (maestro/14-houdini/houdini-send-b.yaml). Screenshots attached below cover: the reorganized scene, the recipient-asset picker, the XMR destination-tag row (lower card), Private send on with the slider in its send-privately state, and both success screens (SwapSuccessScene and the Transaction Success modal).

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Note

Medium Risk
Replacing the wallet Send entry point affects every wallet on builds that include this branch; funds are not at risk because nothing is broadcast, but accidental release would block normal sending until routing is reverted.

Overview
Adds a review-only HoudiniSendScene and wires the wallet Send action to it (layout: 'b') instead of send2, so reviewers can walk a full “Private Send” UX without touching production send or Houdini APIs.

The new scene uses hard-coded address, rates, fees, destination tag, and BTC/ETH/XMR/SOL picker; linked You send / Recipient gets amounts with guaranteed vs estimated sides; a Private send toggle; cosmetic quote countdown; and Proposal B card grouping (address + recipient + amounts, then private toggle, then rate/fee/tag). Completing the slider either opens SwapSuccessScene (cross-asset or private) or a Transaction Success modal → transaction details with a non-broadcast stub transaction.

Also registers the houdiniSend route, adds locale strings, a CHANGELOG entry, and a Maestro flow (houdini-send-b.yaml) for screenshot/regression walkthrough.

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[j0ntz]

📸 Test evidence — Houdini send prototype (Proposal B), iOS sim

agent proof 1216019116944855 b01 houdini b scene

agent proof 1216019116944855 b02 houdini b picker

agent proof 1216019116944855 b03 houdini b xmr destination tag

agent proof 1216019116944855 b04 houdini b private on

agent proof 1216019116944855 b05 houdini b swap success

agent proof 1216019116944855 b06 houdini b success modal

Captured by the agent's in-app test run (build-and-test).

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