docs: update docs for APIs, examples, and types & Use Uint8Array and btc-vision hex utils

[BlobMaster41]

Description

Large documentation sweep: correct ABI encodings (STRING/BYTES use u32), clarify SCHNORR_SIGNATURE format, add new ReconstructionOptions fee fields, and adjust signer-related types across transaction builders to Signer | UniversalSigner. Clarify ML-DSA types to QuantumBIP32Interface | null, update offline signing examples to include mldsa/gas fields, and note Unisat/Xverse multi-PSBT behavior in wallet-extension docs. Improve generators docs (feature priority, fees return shape), expand Address API docs with original/tweaked/hybrid public key helpers and set() behavior, fix examples to use toHex() and remove version printout, reorganize TransactionFactory/flowchart and method signatures, and tidy various cross-links to the transaction-factory page. Also normalize primitive/type table entries in utils and adjust small wording/throw descriptions in epoch docs.

Add a comprehensive documentation site under documentation/, including ABI, address types, API reference, transaction-building guides, keypair/wallet, binary/ABI docs, signer utilities, offline signing, browser integration, epoch/challenge guides, generators, utilities, and a detailed README/TOC with quick-start examples. Move and reorganize several docs (e.g. offline-transaction-signing into documentation/offline, split transaction-building into subpages) and remove old legacy docs. Also update package.json and touch multiple source files (ABICoder, BinaryReader/Writer, Compressor, transaction builders, offline manager, utils, OPNet provider, etc.) to align with the documentation and apply related fixes/cleanup. This change provides a complete developer reference and organized doc structure for the @btc-vision/transaction project.

Replace Node Buffer usage with Uint8Array across ChallengeVerification, ChallengeSubmission, and ChallengeSolution. Use @btc-vision/bitcoin fromHex/toHex helpers for hex <-> byte conversions and update stringToBuffer to return Uint8Array. Adjust toBuffer return type and update hex serialization calls to use toHex.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Performance improvement
• Refactoring (no functional changes)
• Documentation update
• CI/CD changes
• Dependencies update

Checklist

Build & Tests

• npm install completes without errors
• npm test passes all tests

Code Quality

• Code follows the project's coding standards
• No new compiler warnings introduced
• Error handling is appropriate
• SafeMath used for all arithmetic operations

Documentation

• Code comments added for complex logic
• Public APIs are documented
• README updated (if applicable)

Security

• No sensitive data (keys, credentials) committed
• No new security vulnerabilities introduced
• No floating-point arithmetic used

Testing

Related Issues

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