feat: Android: Stealth Mode

[kaloudis]

Description

Relates to issue: ZEUS-506

This pull request is categorized as a:

• New feature
• Bug fix
• Code refactor
• Configuration change
• Locales update
• Quality assurance
• Other

Checklist

• I’ve run yarn run tsc and made sure my code compiles correctly
• I’ve run yarn run lint and made sure my code didn’t contain any problematic patterns
• I’ve run yarn run prettier and made sure my code is formatted correctly
• I’ve run yarn run test and made sure all of the tests pass

Testing

If you modified or added a utility file, did you add new unit tests?

• No, I’m a fool
• Yes
• N/A

I have tested this PR on the following platforms (please specify OS version and phone model/VM):

• Android
• iOS

I have tested this PR with the following types of nodes (please specify node version and API version where appropriate):

• Embedded LND
• LND (REST)
• LND (Lightning Node Connect)
• Core Lightning (CLNRest)
• Nostr Wallet Connect
• LndHub

Locales

• I’ve added new locale text that requires translations
• I’m aware that new translations should be made on the ZEUS Transfix page and not directly to this repo

Third Party Dependencies and Packages

• Contributors will need to run yarn after this PR is merged in
• 3rd party dependencies have been modified:
  • verify that package.json and yarn.lock have been properly updated
  • verify that dependencies are installed for both iOS and Android platforms

Other:

• Changes were made that require an update to the README
• Changes were made that require an update to onboarding

[gemini-code-assist]

Summary of Changes

Hello @kaloudis, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly expands the Android application's capabilities by introducing a privacy-focused 'Stealth Mode' and overhauling core wallet functionalities. It modernizes the user interface with Jetpack Compose for key interactions and strengthens network and API integrations, particularly for advanced transaction types and privacy features. The changes aim to deliver a more robust, private, and user-friendly experience.

Highlights

• Stealth Mode Implementation: Introduced a new 'Stealth Mode' feature for Android, allowing the app's launcher icon to be disguised as common utility apps like a calculator, VPN, QR scanner, or notepad. This is achieved through dynamic activity-alias management in the AndroidManifest.xml and a dedicated StealthMode.java module.
• Wallet Management & Transaction Enhancements: Added extensive new functionalities for wallet creation/restoration (from mnemonic or backup), handling various transaction types including Cahoots (manual and online via Soroban) and PSBT, and managing UTXOs. This includes new activities for creating/restoring wallets, displaying transaction animations, and manual transaction broadcasting.
• UI Modernization with Jetpack Compose: Integrated Jetpack Compose for several new UI components, including account selection, Cahoots transaction setup, and Paynym selection, providing a more modern and responsive user experience.
• Network & API Integration: Enhanced network interaction with dedicated HTTP clients for Whirlpool and PayNym, improved Tor integration, and new API clients for fetching fees, seen addresses, transactions, and xpub tracking. This also includes a mechanism for checking and updating app-related URLs via PGP-signed messages.
• Developer & Maintenance Tools: Added an exception report handler for crash logging, a web explorer with Tor proxy support, and utilities for managing BIP39 wordlists and device footprints, improving app stability and debuggability.

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[gemini-code-assist]

Code Review

This pull request introduces a 'Stealth Mode' feature for Android, which allows users to change the app's icon and name for privacy. The implementation is solid, using Android's activity-alias and a native module to manage the different app appearances. The code includes a crucial safety mechanism to prevent the app from becoming inaccessible.

My review focuses on the files related to the Stealth Mode feature. I've noticed a large number of files under the ashigaru-mobile/ directory have been added. This seems to be a separate project and likely included by mistake. Please consider removing this directory from the pull request.

I have one suggestion for improving the maintainability of the StealthMode.java native module.