soldeer migration

[thedavidmeister]

Migrate from git submodules to soldeer.

Dependencies:

• forge-std → forge-std-1.16.1
• openzeppelin-contracts → @openzeppelin-contracts-4.8.3
• rain.math.saturating → rain-math-saturating-0.1.1
• rain.string → rain-string-0.1.0

CI: drop the bespoke matrix; consume rainix's composite rainix-sol reusable; add the publish wrapper.

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 5495dc0a-40fe-40f4-911f-9795489e285f

📥 Commits

Reviewing files that changed from the base of the PR and between 8308cbb and 1ebebb1.

⛔ Files ignored due to path filters (2)

• flake.lock is excluded by !**/*.lock
• soldeer.lock is excluded by !**/*.lock

📒 Files selected for processing (32)

• .github/workflows/publish-soldeer.yaml
• .github/workflows/rainix.yaml
• .gitignore
• .gitmodules
• .soldeerignore
• README.md
• REUSE.toml
• flake.nix
• foundry.toml
• lib/forge-std
• lib/openzeppelin-contracts
• lib/rain.math.saturating
• lib/rain.string
• remappings.txt
• slither.config.json
• src/lib/LibFixedPointDecimalArithmeticOpenZeppelin.sol
• src/lib/LibFixedPointDecimalStrings.sol
• src/lib/format/LibFixedPointDecimalFormat.sol
• src/lib/parse/LibFixedPointDecimalParse.sol
• test/lib/LibFixedPointDecimalScaleSlow.sol
• test/src/lib/FixedPointDecimalArithmeticOpenZeppelin.t.sol
• test/src/lib/FixedPointDecimalScale.decimalOrIntToInt.t.sol
• test/src/lib/FixedPointDecimalScale.scale18.t.sol
• test/src/lib/FixedPointDecimalScale.scaleBy.t.sol
• test/src/lib/FixedPointDecimalScale.scaleDown.t.sol
• test/src/lib/FixedPointDecimalScale.scaleDownRoundUp.t.sol
• test/src/lib/FixedPointDecimalScale.scaleToIntegerLossless.t.sol
• test/src/lib/FixedPointDecimalScale.scaleUp.t.sol
• test/src/lib/FixedPointDecimalScale.scaleUpSaturating.t.sol
• test/src/lib/FixedPointDecimalScaleN.t.sol
• test/src/lib/format/LibFixedPointDecimalFormat.fixedPointToDecimalString.t.sol
• test/src/lib/parse/LibFixedPointDecimalParse.decimalStringToFixedPoint.t.sol

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 2026-05-09-soldeer

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