feat(wallet): support calldata in forest-wallet send

[0xDevNinja]

Summary of changes

forest-wallet send already routes eth targets to InvokeContract, but there was no way to attach calldata, so it couldn't actually call a method on a contract (the message params were always empty).

Changes introduced in this pull request:

• Add --params-hex to forest-wallet send. The hex calldata (a leading 0x is accepted) is decoded and, for an InvokeContract target, CBOR-wrapped as a byte string the way the EVM actor expects, matching what lotus send --params-hex produces. For any other method the decoded bytes are used verbatim. Empty or absent calldata yields empty params.
• Add --method to set the message method number explicitly. Like lotus send, an explicit method is rejected for a contract target, whose method is always InvokeContract.
• Factored the method resolution and param encoding into small pure helpers and covered them with unit tests (contract vs non-contract method resolution, the --method guard, CBOR-wrapping of calldata, raw passthrough, 0x prefix handling, and invalid hex).

Reference issue to close (if applicable)

Closes#7472

Other information and links

The issue also suggests replacing some lotus wallet send usages in the dev tooling with the forest one. I left that for a follow-up: the one obvious call site (src/dev/subcommands/devnet_cmd/eth_gas.rs) intentionally submits via Lotus to prove Forest's gas estimate lands on a different node, so swapping it would defeat that test's purpose. Happy to migrate whichever call sites you'd like in a follow-up.

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Outside contributions

• This pull request is based on an issue that a maintainer has accepted (see Before Opening a Pull Request).
• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• New Features

  • Added optional hexadecimal calldata support to forest-wallet send through --params-hex.
  • Added support for specifying explicit method numbers with --method.
  • Contract calls now validate method options and encode calldata appropriately.

• Bug Fixes

  • Improved handling of empty and invalid hexadecimal calldata input.

• Documentation

  • Updated the changelog with the new wallet send options.

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• CHANGELOG.md

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Walkthrough

forest-wallet send now accepts optional hexadecimal calldata and explicit method numbers. Contract calls reject method overrides and CBOR-wrap calldata. Non-contract calls use decoded bytes directly. Tests cover validation and encoding behavior.

Changes

Wallet send calldata support

Layer / File(s)	Summary
Send options and parameter encoding src/wallet/subcommands/wallet_cmd.rs, CHANGELOG.md	The send command accepts --params-hex and --method, validates method overrides, encodes calldata for contract and non-contract calls, constructs message parameters, and tests valid, empty, prefixed, and invalid input.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk:⚪ Minimal · up to 764ac

This PR adds calldata and explicit method support to wallet contract sends with documented tests and no actionable merge-blocking risk remains beyond normal checks and review.

Sequence Diagram(s)

sequenceDiagram
participant WalletCommands_Send
participant SendProcessing
participant MethodValidation
participant CalldataEncoding
participant Message
WalletCommands_Send->>SendProcessing: pass params_hex and method
SendProcessing->>MethodValidation: resolve and validate method
SendProcessing->>CalldataEncoding: encode optional hexadecimal calldata
CalldataEncoding-->>SendProcessing: raw or CBOR-wrapped params
SendProcessing->>Message: construct send message with method and params

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Suggested reviewers:lesnyrumcajs, akaladarshi

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR implements --params-hex, optional --method, validation, encoding behavior, and tests required by issue [#7472]. It does not replace the specified lotus wallet send usages, which remains a…	Replace the selected lotus wallet send usages with the Forest implementation, or update issue [#7472] to split that work into a separate follow-up issue with explicit scope and acceptance criteria.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the primary change: adding calldata support to forest-wallet send.
Out of Scope Changes check	✅ Passed	The changes remain within the stated scope. The implementation, tests, and changelog entry directly support calldata and method parameters for forest-wallet send.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…

Full details: Linked Issues check

Explanation

The PR implements --params-hex, optional --method, validation, encoding behavior, and tests required by issue [#7472]. It does not replace the specified lotus wallet send usages, which remains an outstanding issue objective.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

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Actionable comments posted: 1

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Inline comments:
In `@CHANGELOG.md`:
- Line 32: Correct the CHANGELOG entry describing forest-wallet send so it
states that --method sets the message method number for non-contract targets,
removing the claim that it can call methods on contracts.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: dd9aab3a-d144-494f-8eb9-6fb3cf5447a2

📥 Commits

Reviewing files that changed from the base of the PR and between 3e1f9e9 and 07dab05.

📒 Files selected for processing (2)

• CHANGELOG.md
• src/wallet/subcommands/wallet_cmd.rs

🔗 Linked repositories identified

CodeRabbit considers these linked repositories for cross-repo context during reviews:

• filecoin-project/lotus(manual)

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.