Migration to Hardhat 3

[daveroga]

• New hardhat.config.ts with new format
• Scripts and tests are migrated to use ethers and ignition from hardhat network.connect().
• Removed DeployHelper classes with old upgrades
• Updated some ignition modules to return some contracts that are being used in tests
• New verifyContract functionality from hardhat-verify

[coveralls]

Pull Request Test Coverage Report for Build 21215897126

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 59 unchanged lines in 12 files lost coverage.
• Overall coverage increased (+8.2%) to 93.986%

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Files with Coverage Reduction	New Missed Lines	%
contracts/identitytreestore/IdentityTreeStore.sol	1	96.56%
contracts/lib/IdentityLib.sol	1	88.03%
contracts/lib/PrimitiveTypeUtils.sol	1	88.24%
contracts/validators/auth/AuthV2Validator.sol	1	82.61%
contracts/validators/request/CredentialAtomicQueryV3Validator.sol	1	93.84%
contracts/lib/NonMerklizedIssuerBase.sol	2	0.0%
contracts/validators/request/CredentialAtomicQueryValidatorBase.sol	2	91.4%
contracts/validators/request/LinkedMultiQueryValidator.sol	2	97.45%
contracts/verifiers/Verifier.sol	4	89.49%
contracts/cross-chain/CrossChainProofValidator.sol	8	93.33%

Totals
Change from base Build 20393190007:	8.2%
Covered Lines:	3895
Relevant Lines:	4037

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💛 - Coveralls

[Copilot]

Pull request overview

This pull request migrates the codebase from Hardhat 2 to Hardhat 3, updating configuration files, test files, deployment scripts, and ignition modules to use the new API.

Changes:

• Updated hardhat.config.ts to use Hardhat 3's new configuration format with defineConfig and plugins
• Migrated all test files and scripts to use ethers, ignition, and networkHelpers from network.connect()
• Replaced deprecated Chai matchers (.reverted → .revert(ethers), .changeEtherBalance → .changeEtherBalance(ethers))
• Updated ignition modules to return additional contract references needed in tests

Reviewed changes

Copilot reviewed 110 out of 113 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
hardhat.config.ts	Migrated to Hardhat 3 config format with new plugin system
tsconfig.json	Updated target to es2022 and module to esnext
package.json	Updated dependencies and added "type": "module"
test/**/*.test.ts	Migrated to use network.connect() API and updated Chai matchers
scripts/**/*.ts	Updated to use network.connect() for ethers/ignition access
ignition/modules/**/*.ts	Updated module returns and added new test helper modules
helpers/*.ts	Updated utility functions and removed deprecated helpers

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