Deploy new upgradeable Factories

[fbac]

Deploy upgradeable Factories via direct CREATE and update testnet config addresses

• Rewrites DeployFactory.s.sol to deploy Factory implementation and proxy via FactoryDeployer (direct CREATE) instead of routing through an old Factory using CREATE2 with a salt.
• Removes predictAddresses(), salt-based error types, and old-factory dependencies; adds _readFactoryFromEnvironment() to resolve the correct factory address per chain from environments/<env>.json.
• verifyDeployment() now reads the factory address from environments JSON rather than comparing against predicted addresses.
• Updates factory and factoryImplementation addresses in config/testnet-dev.json, config/testnet-staging.json, and config/testnet.json, and settlementChainFactory in the corresponding environments/ files.
• Behavioral Change: DeployFactory.s.sol no longer exposes predictAddresses() and deployment no longer requires factoryProxySalt or an existing old Factory contract.

^{Macroscope summarized 7666914.}

[github-actions]

Changes to gas cost

Generated at commit: 3099b39ddbda53c1e8ad2c0194fe2b601ad9f181, compared to commit: 82d8883bfed8838e2078f3f631ebadb6b694a326

🧾 Summary (20% most significant diffs)

Contract	Method	Avg (+/-)	%

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Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
GenericEIP1967Migrator	121,763 (+12)

[macroscopeapp]

Approvability

Verdict: Needs human review

1 blocking correctness issue found. Updates testnet factory addresses and simplifies the deployment script from CREATE2-based deployment to direct CREATE. While the changes are testnet-only configuration and script simplification, there's an unresolved documentation comment about an incorrect example that should be addressed before merging.

^{You can customize Macroscope's approvability policy. Learn more.}

[github-actions]

LCOV of commit 7666914 during Solidity #781

Summary coverage rate:
  lines......: 99.9% (1366 of 1367 lines)
  functions..: 100.0% (387 of 387 functions)
  branches...: no data found

Files changed coverage rate: n/a