draft: initial implementation

.github/workflows/test.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  FOUNDRY_PROFILE: ci
+
+jobs:
+  check:
+    strategy:
+      fail-fast: true
+
+    name: Foundry project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
+      - name: Show Forge version
+        run: |
+          forge --version
+
+      - name: Run Forge fmt
+        run: |
+          forge fmt --check
+        id: fmt
+
+      - name: Run Forge build
+        run: |
+          forge build --sizes
+        id: build
+
+      - name: Run Forge tests
+        run: |
+          forge test -vvv
+        id: test

.gitignore

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+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+!/broadcast
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env

.gitmodules

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+[submodule "lib/forge-std"]
+	path = lib/forge-std
+	url = https://github.com/foundry-rs/forge-std
+[submodule "lib/dss-test"]
+	path = lib/dss-test
+	url = https://github.com/makerdao/dss-test

README.md

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+# Direct Stability Parameters Change Module (DSPC)
+
+A module for MakerDAO that enables direct changes to stability parameters (duty) for collateral types through a simple, secure interface.
+
+## Overview
+
+The DSPC module provides a streamlined way to modify stability fees for different collateral types in the Maker Protocol. It interfaces directly with the Jug contract and includes proper access controls.
+
+## Features
+
+- Direct stability fee modifications for any collateral type
+- Owner-based access control
+- Event emission for all parameter changes
+- Simple, auditable implementation
+
+## Installation
+
+```bash
+forge install
+```
+
+## Testing
+
+```bash
+forge test
+```
+
+## Usage
+
+1. Deploy the contract with the Jug contract address:
+```solidity
+DSPC dspc = new DSPC(jugAddress);
+```
+
+2. Call the `file` function to modify stability fees:
+```solidity
+dspc.file("ETH-A", 1.05e27); // Sets 5% stability fee for ETH-A
+```
+
+## Security
+
+The module implements a simple but effective authorization system where only the owner can make changes. The owner can be transferred to a new address if needed.
+
+## License
+
+AGPL-3.0-or-later

foundry.toml

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+[profile.default]
+src = "src"
+out = "out"
+libs = ["lib"]
+solc = "0.8.24"
+optimizer = true
+optimizer_runs = 200
+verbosity = 3
+
+# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options
+
+[profile.test]
+verbosity = 3
+
+[rpc_endpoints]
+mainnet = "${ETH_RPC_URL}"