Rm encoding

[JanKuczma]

This pull request updates the ECIES encryption library to version 0.2.0 and introduces significant improvements to the TypeScript and Rust implementations, focusing on clearer APIs, better type safety, and improved interoperability between the two languages. The changes include refactoring encryption/decryption functions to consistently use byte arrays, adding new utility functions for key conversion and hex handling, and enhancing documentation and error handling. Integration tests and CLI commands are also updated to reflect these improvements.

API and Type Safety Improvements

• Refactored all TypeScript encryption and decryption functions (encrypt, decrypt, encryptPadded, etc.) to accept and return Uint8Array instead of strings, improving type safety and clarity. Added utility functions like toHexString, fromHexString, and ensureBytes for robust hex conversion and byte handling.
• Added publicKeyFromPrivateKey to TypeScript for deriving a public key from a private key, and documented all major functions for clarity.

Rust Library Enhancements

• Added a method to derive a public key from a private key (PrivKey::public_key) and improved documentation for all major functions in rust/lib/src/lib.rs.
• Refactored encryption and decryption functions to use explicit byte array parameters and updated padding logic for consistency with the TypeScript implementation.

Version Bumps

• Bumped the version to 0.2.0 in package.json, ts/lib/package.json, and rust/lib/Cargo.toml to reflect these breaking and additive changes.

[Copilot]

Pull Request Overview

This PR refactors the ECIES encryption library to version 0.1.7, introducing breaking API changes that improve type safety by switching from string-based to byte array-based function signatures. The changes standardize all encryption/decryption functions to work with Uint8Array inputs and outputs, while adding utility functions for hex conversion and key derivation.

• Refactored all TypeScript encryption/decryption functions to use Uint8Array instead of strings
• Added utility functions for hex conversion (toHexString, fromHexString, ensureBytes) and key derivation (publicKeyFromPrivateKey)
• Updated CLI and integration tests to handle the new byte array-based API

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
ts/lib/src/index.ts	Core library refactoring with new byte-based APIs, utility functions, and comprehensive documentation
ts/cli/index.ts	CLI updates to work with new byte array APIs, adding encoding/decoding steps
tests/integration-test.sh	Added debug output for integration test troubleshooting
package.json, ts/lib/package.json, rust/lib/Cargo.toml	Version bumps to 0.1.7
rust/lib/src/lib.rs	Added public key derivation method and improved function documentation

Comments suppressed due to low confidence (1)

[Marcin-Radecki]

Great job!