[NONEVM-2656] Contract version debugging tool

[patricios-space]

NONEVM-2656

Debugging tool to search the commit hash given the contract code hash and the published artifacts

[Copilot]

Pull Request Overview

This PR introduces a debugging tool to search for the commit hash that corresponds to a given contract code hash by cross-referencing published artifacts. The tool connects to the TON blockchain, retrieves a contract's code hash, and searches through GitHub releases to find the matching compiled contract.

Key changes:

• Added a complete Go application for contract version debugging
• Implemented GitHub API integration to fetch releases and commit information
• Created functionality to download and parse contract artifacts from releases

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
scripts/codehash-matcher/main.go	Main application with TON RPC connection, GitHub API integration, and contract matching logic
scripts/codehash-matcher/go.mod	Go module definition with dependencies for TON utilities
scripts/codehash-matcher/README.md	Documentation explaining tool usage, examples, and troubleshooting

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[Copilot]

The security check to reject filenames starting with '.' may be too restrictive as it would also reject legitimate files like '.compiled.json'. Consider allowing files that end with '.compiled.json' even if they start with a dot, or adjust the logic to be more specific about which dot-prefixed files to reject.

Suggested change

	strings.HasPrefix(baseName, ".") {
	(strings.HasPrefix(baseName, ".") && !strings.HasSuffix(baseName, ".compiled.json")) {

[Copilot]

The path sanitization logic has a logical issue. Since baseName is derived from filepath.Base(header.Name), it should never contain '/' or '\' characters, making those checks redundant. Consider removing these redundant checks or restructuring the validation logic.

Suggested change

	strings.Contains(baseName, "/") ||
	strings.Contains(baseName, "\\") ||