Update example contracts to include EUID usage

[kevinsslin]

Update Example Contracts to Support EU ID Card (EUID) Usage

Overview

This PR updates the example contracts to support the new EU ID Card (EUID) attestation type alongside existing E-Passport verification.

Key Changes

🆕 Enhanced Dual Attestation Support

• Airdrop Contract: Upgraded to Airdrop V2 with support for both E-Passport and EU ID Card attestations
• Identity NFT Contract: Replaced SelfPassportERC721 with SelfIdentityERC721 for unified identity verification
• Birthday Contract: Enhanced HappyBirthday V2 with EUID bonus multipliers

🔧 Architecture Improvements

• Unified Verification Hook: Migrated from onVerificationSuccess() to customVerificationHook() with improved output structure
• V2 Integration: Updated all contracts to use SelfVerificationRoot V2 and CircuitAttributeHandlerV2
• Generic Output Structure: Standardized on GenericDiscloseOutputV2 for both attestation types

📋 Contract-Specific Updates

Airdrop.sol

• ✅ Dual attestation support (E-Passport + EU ID Card)
• ✅ Simplified verification logic with unified output handling
• ✅ Enhanced event emission with attestation type tracking

HappyBirthday.sol

• ✅ Added EUID bonus multiplier (200% vs 100% for E-Passport)
• ✅ Enhanced date handling with Formatter utilities
• ✅ Increased base claimable amount from $1 to $50 ($100 for EUID claimer)

SelfIdentityERC721.sol (renamed from SelfPassportERC721.sol)

• ✅ Generic identity verification replacing passport-specific logic
• ✅ Support for both E-Passport and EU ID Card attributes
• ✅ Simplified attribute handling with unified data structure

Breaking Changes

• SelfPassportERC721 → SelfIdentityERC721 (contract renamed)
• onVerificationSuccess() → customVerificationHook() (method signature changed)
• Constructor parameters simplified (removed attestation ID arrays)

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Walkthrough

This update introduces extensive changes across the codebase, including major refactoring and feature additions for the smart contract identity verification system (V2). It adds new contracts, libraries, and tests for modular, extensible verification flows, updates the build and deployment scripts, and removes legacy or test workspace files. The update also modifies mobile and CI workflows, enhances UI components, and introduces new verification gestures and error handling.

Changes

Files/Paths	Change Summary
.github/actions/, .github/workflows/	CI workflows updated to use Yarn 4.6.0 with Corepack, improved command chaining, and npm publish flow switched to dev branch and npm publish.
app/android/app/build.gradle, app/ios/OpenPassport/Info.plist, app/ios/Self.xcodeproj/*, app/package.json	Mobile app version incremented from 2.5.3 to 2.5.4; Android dependency updated; build config changes.
app/index.js	Removed ToastProvider wrapper.
app/src/layouts/SimpleScrolledTitleLayout.tsx	Added optional secondary button to layout component.
app/src/screens/dev/MockDataScreen.tsx, app/src/screens/misc/LaunchScreen.tsx, app/src/screens/settings/SettingsScreen.tsx	Developer gesture changed to single-finger 5-tap.
app/src/screens/passport/NFCMethodSelectionScreen.tsx	Added MRZ correction method and manual input fields; platform support expanded.
app/src/screens/passport/PassportNFCScanScreen.tsx	Refactored error handling to modal, added help button, simplified dev gesture.
app/src/screens/passport/PassportNFCTroubleScreen.tsx	UI/layout improvements, gesture simplification, secondary button added.
app/src/types/react-native-passport-reader.d.ts	Extended ScanOptions with CAN fields; added reset() to PassportReader.
app/src/utils/nfcScanner.ts	Added PassportReader.reset() and CAN support in scanAndroid.
app/src/utils/utils.ts	MRZ detection logic switched to regex-based validation.
circuits/circuits/utils/crypto/*, circuits/circuits/utils/passport/disclose/disclose_id.circom	Formatting, whitespace, and comment updates; no logic changes except for shaBytesDynamic.circom, which adds range checking.
circuits/scripts/build/build_disclose_circuits.sh, circuits/scripts/build/common.sh	Added new circuit entry; updated include paths; commented out zkey contribute step.
circuits/tests/disclose/vc_and_disclose_id.test.ts	Adjusted test for new selective disclosure data length; removed passportNo_smt.
common/index.ts	Exported new buildSMT utility.
common/package.json	Version bump to 0.0.3.
contracts/contracts/IdentityVerificationHubImplV2.sol, contracts/contracts/abstract/SelfVerificationRoot.sol, contracts/contracts/interfaces/IIdentityVerificationHubV2.sol, contracts/contracts/interfaces/ISelfVerificationRoot.sol	Major refactor: new modular verification flow, config management, new callback structure, updated error handling, and new extensible storage.
contracts/contracts/constants/CircuitConstantsV2.sol	Changed passportNoSmtRootIndex for ID cards.
contracts/contracts/example/Airdrop.sol, contracts/contracts/example/SelfPassportERC721.sol	Entire contracts commented out (disabled).
contracts/contracts/example/HappyBirthday.sol	Upgraded to V2: new bonus logic, struct decoding, and birthday window checks.
contracts/contracts/libraries/*, contracts/contracts/tests/TestCustomVerifier.sol, contracts/contracts/tests/TestSelfVerificationRoot.sol, contracts/contracts/tests/testGenericFormatter.sol	Added/updated libraries for attribute handling, custom verification, struct formatting, and new test contracts.
contracts/contracts/registry/IdentityRegistryIdCard.sol, contracts/contracts/registry/IdentityRegistryIdCardImplV1.sol	IdCard proxy contract deleted; unused imports removed from IdCardImplV1.
contracts/contracts/verifiers/disclose/Verifier_vc_and_disclose_id.sol	New zk-SNARK verifier contract for ID card disclosure.
contracts/contracts/verifiers/register_id/Verifier_register_id_sha256_sha256_sha256_rsa_65537_4096.sol	Formatting only.
contracts/hardhat.config.ts, contracts/package.json	Compiler settings and scripts updated; switched to Yarn for all scripts.
contracts/ignition/modules/, contracts/scripts/	Formatting and new dev/test scripts; added README for scripts.
contracts/test/example/airdrop.test.ts, contracts/test/integration/, contracts/test/unit/, contracts/test/utils/, contracts/test/v2/	Extensive new and updated tests for V2 contracts, new utilities, and expanded coverage for all new features and error cases.
package.json	Removed sdk/tests/* from Yarn workspaces.
sdk/tests/api-server/, sdk/tests/web-app/	All files deleted: test API server and web-app removed from workspaces.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant App (Mobile/Web)
    participant SmartContract (Hub V2)
    participant Registry
    participant Verifier

    User->>App: Initiate verification (e.g., NFC scan)
    App->>SmartContract: Call verify(proofPayload, userContextData)
    SmartContract->>Verifier: Validate ZK proof (Groth16)
    SmartContract->>Registry: Check commitment roots, timestamps
    SmartContract->>SmartContract: Perform config checks (OFAC, age, countries)
    SmartContract-->>App: Emit event/onVerificationSuccess(output, userData)
    App-->>User: Show verification result or error modal

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Possibly related PRs

• selfxyz/self#654: Also updates CI workflows to set Yarn 4.6.0, directly overlapping with this PR's changes in CI configuration.
• selfxyz/self#650: Modifies SelfVerificationRoot and verification config handling, closely related to the new verification flow and config management introduced here.

Suggested reviewers

• seshanthS

Poem

In fields of code where rabbits hop,
New contracts bloom and old ones stop.
With verifiers fresh and configs anew,
Identity checks now leap right through.
Five taps unlock a secret door—
Bugs beware, we’re swift and sure!
🐇✨

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