chore: Deployment upgrade

[sogipec]

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[Copilot]

Pull request overview

This PR upgrades the multi-chain deployment infrastructure and artifacts for Merkl’s DistributionCreator/Distributor implementations, adds a Polygon-specific implementation variant, and refreshes various deployment scripts, docs, and metadata.

Changes:

• Centralizes and expands the supported chain list in UpgradeDeploymentBase and aligns the multi-chain deployment shell script (deployUpgradeImplementations.sh) and .env conventions to use ETH_NODE_URI_<CHAIN_ID>, adding skip/idempotency behavior.
• Introduces a conditional deployment of DistributionCreatorWithDistributions on Polygon (chain ID 137) while keeping DistributionCreator for other chains, and updates deployment helper scripts for middleman and pull-token-wrapper flows.
• Adds a large set of new deployment logs/JSONs for the 27 Jan 2026 upgrade batch and updates docs (UPGRADE_DEPLOYMENT.md, README) and CI env wiring accordingly.

Reviewed changes

Copilot reviewed 124 out of 181 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
scripts/utils/UpgradeDeploymentBase.s.sol	Expands the canonical chain configuration list and adds Polygon-only deployment of DistributionCreatorWithDistributions while preserving Distributor deployment flow.
scripts/deployStandardMiddleman.s.sol	Updates the default CampaignParameters (reward token, type, duration, campaignData) for the standard middleman deployment template.
scripts/deployPullTokenWrapper.s.sol	Points the script to the ink RPC alias, switches underlying/holder addresses, and toggles to deploy a fresh PullTokenWrapperAllow implementation instead of reusing a mainnet one.
helpers/deployUpgradeImplementations.sh	Refactors the multi-chain deploy script to load .env, map chain names to chain IDs, use ETH_NODE_URI_<CHAIN_ID> variables, skip re-deploying chains with existing JSON, and use legacy transactions.
contracts/partners/tokenWrappers/weth.sol	Lowers the pragma from ^0.8.20 to ^0.8.18, likely to allow compilation for chains without EIP-3855/PUSH0.
contracts/Disputer.sol	Lowers the pragma from ^0.8.19 to ^0.8.18 for similar compiler/EVM compatibility reasons.
UPGRADE_DEPLOYMENT.md	Documents the 27 Jan 2026 upgrade run, its success/verification status, and simplifies the prerequisite env description while pointing to updated deployment tooling.
README.md	Updates the audits section to reference both the 2023 and 2025 Code4rena reports.
.github/workflows/coverage.yml	Removes the now-unused OPTIMISM_NODE_URI env from coverage runs while keeping Arbitrum/Base forks.
.github/workflows/ci.yml	Same as above for the main CI workflow.
.github/workflows/ci-deep.yml	Same as above for the deep CI workflow.
.env.example	Aligns env naming to a single ETHERSCAN_API_KEY and ETH_NODE_URI_<CHAIN_ID> convention to match the updated helper scripts.
deployments/upgrade-270126/* (logs & JSON)	Adds artifacts for the 27 Jan 2026 upgrade run across many chains (deployment logs, implementation JSONs, and some Gnosis Safe batch JSONs) used operationally for upgrades and verification.

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