Add ergoc JSON output ErgoTree construction

[arobsn]

This PR introduces ErgoTree construction from ergoc JSON output and named constant replacement.

Example

Given the following output:

const compilerOutput = {
  header: "1a",
  expressionTree: "d191b283010573007301007302",
  constants: [
    { value: "0580897a", type: "Long" },
    { value: "0400", type: "Int" },
    { value: "059003", type: "Long", name: "price2" }
  ]
};

const ergoTree = ErgoTree.from(compilerOutput) // reconstruct from json object
  .replaceConstant("price2", SLong(2n));       // replace constant by name

[changeset-bot]

🦋 Changeset detected

Latest commit: b41cc45

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@fleet-sdk/core	Minor
@fleet-sdk/blockchain-providers	Minor
@fleet-sdk/compiler	Minor
@fleet-sdk/mock-chain	Minor
@fleet-sdk/wallet	Minor
@fleet-sdk/ageusd-plugin	Patch
@fleet-sdk/babel-fees-plugin	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (8642255) to head (b41cc45).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #202   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          124       124           
  Lines        14157     14204   +47     
  Branches      1762      1776   +14     
=========================================
+ Hits         14157     14204   +47     

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[pkg-pr-new]

@fleet-sdk/blockchain-providers

npm i https://pkg.pr.new/@fleet-sdk/blockchain-providers@202

@fleet-sdk/common

npm i https://pkg.pr.new/@fleet-sdk/common@202

@fleet-sdk/compiler

npm i https://pkg.pr.new/@fleet-sdk/compiler@202

@fleet-sdk/core

npm i https://pkg.pr.new/@fleet-sdk/core@202

@fleet-sdk/crypto

npm i https://pkg.pr.new/@fleet-sdk/crypto@202

@fleet-sdk/mock-chain

npm i https://pkg.pr.new/@fleet-sdk/mock-chain@202

@fleet-sdk/serializer

npm i https://pkg.pr.new/@fleet-sdk/serializer@202

@fleet-sdk/wallet

npm i https://pkg.pr.new/@fleet-sdk/wallet@202

@fleet-sdk/ageusd-plugin

npm i https://pkg.pr.new/@fleet-sdk/ageusd-plugin@202

@fleet-sdk/babel-fees-plugin

npm i https://pkg.pr.new/@fleet-sdk/babel-fees-plugin@202

commit: b41cc45

[Copilot]

Pull Request Overview

This PR adds support for constructing ErgoTree instances from ergoc compiler JSON output and enables replacing constants by name. The changes allow developers to work with compiler output more directly and manage constants using meaningful names instead of just numeric indices.

• Add ErgoTree.from() static method to construct from JSON compiler output
• Extend replaceConstant() to accept string names in addition to numeric indices
• Add named constant mapping functionality with private #nameConstant() method

Reviewed Changes

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

File	Description
packages/core/src/models/ergoTree.ts	Core implementation of JSON construction and named constant support
packages/core/src/models/ergoTree.spec.ts	Comprehensive test coverage for new functionality
.changeset/sour-ideas-flow.md	Changelog entry for JSON construction feature
.changeset/loose-ears-cheat.md	Changelog entry for named constants feature