feat: add Tron chain definitions for currency package

[rodrigopavezi]

Description of the changes

Added support for Tron blockchain and its Nile testnet:

• Created new Tron chain configuration with USDT and USDC token definitions
• Added Nile testnet configuration for Tron
• Implemented TronChains class for handling Tron-specific chain operations
• Updated type definitions to include Tron chains in the supported VM chains
• Added Tron chains to the exports for use throughout the application

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Closes RequestNetwork/private-issues#223
Closes RequestNetwork/private-issues#224

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✨ Finishing touches

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• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/tron-currency

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[rodrigopavezi]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat: add Tron payment detection retrievers and advanced logic support #1691
• feat: add Tron payment processor support #1690
• feat: add Tron payment detection support #1689
• feat: add Tron chain definitions for currency package #1688 👈 (View in Graphite)
• feat: add Tron smart contracts and deployment infrastructure #1687
• chore: increase resource class to xlarge for CircleCI jobs #1698
• master

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[greptile-apps]

Greptile Overview

Greptile Summary

Added comprehensive support for Tron blockchain to the currency package, enabling the system to handle Tron mainnet and Nile testnet chains.

• Created TronChains class following the established pattern from EvmChains and NearChains, extending ChainsAbstract with Tron-specific chain operations
• Defined Tron mainnet with USDT (TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t) and USDC (TEkxiTehnzSmSe2XqrBj4w32RUN966rdz8) TRC20 token addresses
• Created Nile testnet configuration as a placeholder for test token definitions
• Added TronChainName type definition and included Tron chains in VMChainName to indicate that payment proxy contracts can be deployed on Tron
• Properly integrated both Tron chains into the declarative chains system and exported TronChains for use throughout the application
• Fixed typo in comment ("Virtual machine" instead of "Virtual machin")

The implementation follows the existing architectural patterns and is consistent with how other blockchain networks are integrated into the system.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The implementation follows established patterns from existing chain integrations (EVM, NEAR), uses consistent type definitions, and adds new functionality without modifying existing code. All changes are purely additive and well-structured.
• No files require special attention

Important Files Changed

Filename	Overview
packages/currency/src/chains/declarative/data/tron.ts	Added Tron mainnet configuration with USDT and USDC token definitions
packages/currency/src/chains/tron/TronChains.ts	Created TronChains class extending ChainsAbstract for Tron chain operations
packages/types/src/currency-types.ts	Added TronChainName type and included it in VMChainName, fixed typo in comment

Sequence Diagram

sequenceDiagram
    participant App as Application
    participant TronChains as TronChains
    participant ChainsAbstract as ChainsAbstract
    participant TronDef as Tron/Nile Definitions
    participant Types as Currency Types

    App->>Types: Import TronChainName type
    App->>TronChains: Import TronChains instance
    TronChains->>TronDef: Load chain definitions (tron, nile)
    TronChains->>ChainsAbstract: Initialize with chains & CURRENCY.ETH
    ChainsAbstract->>ChainsAbstract: Register chain names
    ChainsAbstract->>ChainsAbstract: Attempt to add native currencies
    Note over ChainsAbstract: No native TRX currencies defined,<br/>so none are added
    App->>TronChains: isChainSupported('tron')
    TronChains-->>App: true
    App->>TronChains: getChainId('tron')
    TronChains->>TronDef: Access tron.chainId
    TronDef-->>TronChains: 'tron'
    TronChains-->>App: 'tron'
    App->>TronChains: Access currencies for tron
    TronChains->>TronDef: Access tron.currencies
    TronDef-->>App: {USDT, USDC definitions}

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[greptile-apps]

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[MantisClone]

Looks good to me so far.

Reviewed with Claude Code Opus 4.5

[MantisClone]

LGTM — clean chain definitions. The temporary placement in declarative chains is properly resolved by #1687 which moves Tron to its own TronChains class.