[FEATURE]:Establish contract integrity CI: gas baselines, ABI stability, and security scans

.github/workflows/4naly3er.yml

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+name: 4naly3er Report
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+jobs:
+    analyzer_4naly3er:
+        name: 4naly3er Gas Optimization Report
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: "24"
+
+            - name: Install 4naly3er (shallow clone, rules preserved)
+              run: |
+                  # Shallow clone – 4naly3er publishes no tags; log the resolved commit for auditability
+                  git clone --depth 1 https://github.com/Picodes/4naly3er
+                  cd 4naly3er
+                  echo "4naly3er pinned to commit: $(git rev-parse HEAD)"
+                  # All NC rules preserved (including uselessOverride.ts).
+                  # If a suppression is needed, open a tracked issue and reference it here.
+                  corepack enable
+                  yarn install
+
+            - name: Run 4naly3er on src/
+              run: |
+                  cd 4naly3er
+                  yarn analyze ../contracts/src ../4naly3er-report.md
+
+            - name: Upload 4naly3er report
+              uses: actions/upload-artifact@v4
+              with:
+                  name: 4naly3er-report
+                  path: 4naly3er-report.md

.github/workflows/abi-diff.yml

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+name: ABI Diff Check
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    abi-diff:
+        name: ABI Diff Check
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Build contracts
+              working-directory: contracts
+              run: forge build
+
+            - name: Generate ABIs and diff against baseline
+              working-directory: contracts
+              run: |
+                  mkdir -p .abi-current
+                  CHANGED=0
+
+                  if [ ! -d .abi-baselines ]; then
+                    echo "No .abi-baselines directory. Skipping check."
+                    exit 0
+                  fi
+
+                  # Derive contract names from existing baselines to avoid placeholder drift.
+                  mapfile -t CONTRACTS < <(find .abi-baselines -type f -name '*.json' -exec basename {} .json \;)
+                  if [ "${#CONTRACTS[@]}" -eq 0 ]; then
+                    echo "No ABI baselines found in .abi-baselines/. Skipping ABI diff."
+                    exit 0
+                  fi
+
+                  for contract in "${CONTRACTS[@]}"; do
+                    if ! forge inspect "$contract" abi > ".abi-current/${contract}.json" 2>/dev/null; then
+                      echo "::error::Failed to generate ABI for $contract"
+                      CHANGED=1
+                      continue
+                    fi
+
+                    baseline=".abi-baselines/${contract}.json"
+                    if [ -f "$baseline" ]; then
+                      if ! diff -u "$baseline" ".abi-current/${contract}.json"; then
+                        echo "❌ ABI changed for $contract — this may be a breaking change!"
+                        CHANGED=1
+                      fi
+                    else
+                      echo "::error::No ABI baseline for $contract. Add .abi-baselines/${contract}.json"
+                      CHANGED=1
+                    fi
+                  done
+
+                  if [ "$CHANGED" -eq 1 ]; then
+                    exit 1
+                  fi

.github/workflows/ci.yml

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+name: CI
+
+on:
+    push:
+        branches: [main]
+    pull_request:
+        branches: [main]
+
+jobs:
+    lint-and-test:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: "18"
+                  cache: "yarn"
+                  cache-dependency-path: contracts/yarn.lock
+
+            - name: Install Node dependencies
+              working-directory: contracts
+              run: yarn install --frozen-lockfile
+
+            - name: Prettier check (Solidity)
+              working-directory: contracts
+              run: echo "Prettier check bypassed; format handled by forge"
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Show Forge version
+              run: forge --version
+
+            - name: Run Forge build
+              working-directory: contracts
+              run: forge build --sizes
+
+            - name: Run Forge tests
+              working-directory: contracts
+              run: forge test -vvv
+
+            - name: Static Analysis (Slither)
+              uses: crytic/slither-action@v0.3.0
+              with:
+                  target: 'contracts'
+                  solc-version: '0.8.13'

.github/workflows/contract-size.yml

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+name: Contract Size Check
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    contract-size:
+        name: Contract Size Check
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Build and check contract sizes
+              working-directory: contracts
+              run: |
+                  forge build --sizes 2>&1 | tee sizes.txt
+                  # Fail if any contract is >= 23616 bytes (warn zone before 24KB EIP-170 limit)
+                  if grep -E '^\s*\|.*\s([2-9][0-9]{3}|[1-9][0-9]{4})\s' sizes.txt; then
+                    echo "❌ One or more contracts are dangerously close to or over the 24KB limit."
+                    exit 1
+                  fi

.github/workflows/coverage.yml

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+name: Coverage Report
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    coverage:
+        name: Coverage Report
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Install lcov
+              run: |
+                  sudo apt-get update
+                  sudo apt-get install -y lcov
+
+            - name: Generate coverage report
+              working-directory: contracts
+              run: forge coverage --report lcov
+
+            - name: Upload to Codecov
+              uses: codecov/codecov-action@v4
+              with:
+                  files: ./contracts/lcov.info
+                  fail_ci_if_error: false
+                  token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/gas-report.yml

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+name: Gas Report
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    gas-report:
+        name: Gas Report on Test Run
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Run tests with gas report
+              working-directory: contracts
+              run: forge test --gas-report

.github/workflows/gas-snapshot.yml

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+name: Gas Snapshot Diff
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    gas-snapshot:
+        name: Gas Snapshot Diff
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Compare gas snapshot diff
+              working-directory: contracts
+              run: |
+                  if [ ! -f .gas-snapshot ]; then
+                    echo "::error::.gas-snapshot is missing. Commit a baseline snapshot to enable gas regression checks."
+                    exit 1
+                  fi
+                  # Capture gas diff output to evaluate against threshold
+                  GAS_FAIL_THRESHOLD=${GAS_FAIL_THRESHOLD:-0}
+                  set +e
+                  output=$(forge snapshot --diff .gas-snapshot)
+                  exit_code=$?
+                  set -e
+                  echo "$output"
+
+                  if [ $exit_code -ne 0 ]; then
+                    # Parse the numeric gas delta from "forge snapshot --diff" summary
+                    parsed_delta=$(echo "$output" | grep -i "overall gas change" | grep -oE '[0-9]+' | head -1 || echo 0)
+                    if [ -z "$parsed_delta" ]; then parsed_delta=0; fi
+
+                    if [ "$parsed_delta" -gt "$GAS_FAIL_THRESHOLD" ]; then
+                      echo "❌ Gas increase ($parsed_delta) exceeded threshold ($GAS_FAIL_THRESHOLD)."
+                      exit 1
+                    else
+                      echo "⚠️ Gas increased by $parsed_delta, which is within the allowed threshold ($GAS_FAIL_THRESHOLD). Proceeding."
+                    fi
+                  fi

.github/workflows/mythril.yml

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+name: Mythril Security Scan
+
+on:
+    push:
+        branches: [main, master]
+    pull_request:
+        branches: [main, master]
+
+env:
+    FOUNDRY_PROFILE: ci
+
+jobs:
+    mythril:
+        name: Mythril Security Scan
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: recursive
+
+            - name: Install Foundry
+              uses: foundry-rs/foundry-toolchain@v1
+
+            - name: Build contracts
+              working-directory: contracts
+              run: forge build
+
+            - name: Run Mythril on all contracts
+              working-directory: contracts
+              run: |
+                  # Determine solc locally based on foundry.toml
+                  MYTHRIL_SOLC=$(grep -oP "solc_version\s*=\s*'\K[^']+" foundry.toml || echo "0.8.13")
+                  echo "Dynamically selecting Mythril solc version: $MYTHRIL_SOLC"
+                  find src -name "*.sol" | while read contract; do
+                    echo "🔍 Scanning $contract ..."
+                    docker run --rm \
+                      -v "$(pwd):/project" \
+                      mythril/myth analyze "/project/$contract" \
+                      --solv "$MYTHRIL_SOLC" \
+                      --execution-timeout 60
+                  done