fix(ci): update it based on latest bitcoinfuzz changes

.github/actions/setup-boost-186/action.yml

@@ -0,0 +1,33 @@
+name: Setup Boost 1.86
+description: Restores or builds the Boost 1.86 toolchain required by libbitcoin-system.
+runs:
+  using: composite
+  steps:
+    - name: Restore Boost 1.86 cache
+      id: boost-cache
+      uses: actions/cache/restore@v4
+      with:
+        path: ${{ runner.tool_cache }}/bitcoinfuzz/boost-1.86.0
+        key: boost-1.86.0-${{ runner.os }}-clang-${{ hashFiles('.github/actions/setup-boost-186/**') }}
+
+    - name: Build Boost 1.86
+      shell: bash
+      env:
+        BOOST_PREFIX: ${{ runner.tool_cache }}/bitcoinfuzz/boost-1.86.0
+        BOOST_VERSION: 1.86.0
+        BOOST_URL: https://github.com/boostorg/boost/releases/download/boost-1.86.0/boost-1.86.0-cmake.tar.gz
+        BOOST_LIBRARIES: iostreams;locale;program_options;thread;url;test;regex;filesystem;system;date_time;chrono;atomic;random;container;charconv;json
+        CC: /usr/bin/clang
+        CXX: /usr/bin/clang++
+      run: bash "${{ github.action_path }}/install-boost.sh"
+
+    - name: Save Boost 1.86 cache
+      if: ${{ steps.boost-cache.outputs.cache-hit != 'true' }}
+      uses: actions/cache/save@v4
+      with:
+        path: ${{ runner.tool_cache }}/bitcoinfuzz/boost-1.86.0
+        key: boost-1.86.0-${{ runner.os }}-clang-${{ hashFiles('.github/actions/setup-boost-186/**') }}
+
+    - name: Export BOOST_ROOT
+      shell: bash
+      run: echo "BOOST_ROOT=${{ runner.tool_cache }}/bitcoinfuzz/boost-1.86.0" >> "$GITHUB_ENV"

.github/actions/setup-boost-186/install-boost.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+boost_config="${BOOST_PREFIX}/lib/cmake/Boost-${BOOST_VERSION}/BoostConfig.cmake"
+if [[ -f "${boost_config}" ]]; then
+  exit 0
+fi
+
+mkdir -p "$(dirname "${BOOST_PREFIX}")"
+
+workdir="$(mktemp -d "${RUNNER_TEMP:-/tmp}/boost-${BOOST_VERSION}.XXXXXX")"
+archive="${workdir}/boost.tar.gz"
+srcdir="${workdir}/boost-${BOOST_VERSION}"
+stage_prefix="${BOOST_PREFIX}.new"
+
+cleanup() {
+  rm -rf "${workdir}" "${stage_prefix}"
+}
+
+trap cleanup EXIT
+
+rm -rf "${BOOST_PREFIX}" "${stage_prefix}"
+
+curl --fail --show-error --location \
+  --retry 5 \
+  --retry-all-errors \
+  --retry-delay 2 \
+  --output "${archive}" \
+  "${BOOST_URL}"
+
+tar -tzf "${archive}" >/dev/null
+tar -xzf "${archive}" -C "${workdir}"
+
+if [[ ! -d "${srcdir}" ]]; then
+  echo "Expected Boost source directory ${srcdir} was not created" >&2
+  exit 1
+fi
+
+cmake -S "${srcdir}" -B "${srcdir}/build" \
+  -DCMAKE_C_COMPILER="${CC}" \
+  -DCMAKE_CXX_COMPILER="${CXX}" \
+  -DCMAKE_INSTALL_PREFIX="${stage_prefix}" \
+  -DBUILD_SHARED_LIBS=OFF \
+  -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+  -DBOOST_INCLUDE_LIBRARIES="${BOOST_LIBRARIES}"
+
+cmake --build "${srcdir}/build" --parallel "$(nproc)"
+cmake --install "${srcdir}/build"
+
+mv "${stage_prefix}" "${BOOST_PREFIX}"

.github/actions/setup-test-env/action.yml

@@ -1,50 +1,33 @@
 name: Setup Test Environment
-description: Sets up the environment for a test job, including repo checkout, cache restore, and macOS-specific setup.
+description: Checks out bitcoinfuzz at the commit the build job used, downloads the build artifacts and installs the runtime deps.
 inputs:
-  os:
-    description: Operating system
-    required: true
-  github-sha:
-    description: GitHub SHA
-    required: true
-  github-run-id:
-    description: GitHub Run ID
+  bitcoinfuzz-ref:
+    description: bitcoinfuzz commit SHA the build job compiled
     required: true
 runs:
   using: "composite"
   steps:
-    - name: Restore build artifacts
-      uses: actions/cache/restore@v4
+    - name: Checkout bitcoinfuzz repo
+      uses: actions/checkout@v4
+      with:
+        repository: bitcoinfuzz/bitcoinfuzz
+        ref: ${{ inputs.bitcoinfuzz-ref }}
+        path: bitcoinfuzz
+
+    - name: Download build artifacts
+      uses: actions/download-artifact@v8
       with:
-        path: |
-          bitcoinfuzz
-          build.env
-        key: bitcoinfuzz-build-${{ inputs.os }}-${{ inputs.github-sha }}-${{ inputs.github-run-id }}
+        name: bitcoinfuzz-build
+        path: bitcoinfuzz
+
     - name: Setup environment
       shell: bash
       run: |
         sudo apt-get update
         sudo apt-get install -y lowdown libsodium-dev
+        # libbitcoin-system requires CMake >= 3.30; Ubuntu 24.04 ships 3.28.3.
+        # pip provides a binary cmake that takes precedence on PATH.
+        python3 -m pip install --upgrade --break-system-packages 'cmake>=3.30'
 
     - name: Install Boost 1.86 (required for libbitcoin-system targets)
-      shell: bash
-      run: |
-        # Cache hit short-circuits this; Boost is installed to /opt/boost-1.86
-        # so the bitcoinfuzz link step can resolve libbitcoin-system's Boost refs.
-        if [ ! -f /opt/boost-1.86/lib/cmake/Boost-1.86.0/BoostConfig.cmake ]; then
-          python3 -m pip install --upgrade --break-system-packages 'cmake>=3.30'
-          curl -sSL -o /tmp/boost.tar.gz \
-            https://github.com/boostorg/boost/releases/download/boost-1.86.0/boost-1.86.0-cmake.tar.gz
-          tar -xzf /tmp/boost.tar.gz -C /tmp
-          cd /tmp/boost-1.86.0
-          cmake -B build \
-            -DCMAKE_C_COMPILER=/usr/bin/clang \
-            -DCMAKE_CXX_COMPILER=/usr/bin/clang++ \
-            -DCMAKE_INSTALL_PREFIX=/opt/boost-1.86 \
-            -DBUILD_SHARED_LIBS=OFF \
-            -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-            -DBOOST_INCLUDE_LIBRARIES="iostreams;locale;program_options;thread;url;test;regex;filesystem;system;date_time;chrono;atomic;random;container;charconv"
-          cmake --build build --parallel "$(nproc)"
-          sudo cmake --install build
-        fi
-        echo "BOOST_ROOT=/opt/boost-1.86" >> $GITHUB_ENV
+      uses: ./.github/actions/setup-boost-186

.github/scripts/run-fuzz.sh

@@ -7,14 +7,18 @@ CXXFLAGS="$3"
 ASAN_OPTIONS="${4:-}"
 CXX="${5}"
 
+# Remove the fixed arguments in order to forward
+# any extra arguments to libFuzzer
+shift 5
+
 if [ -d "./${CORPUS_DIR}" ]; then
   echo "Using corpora for ${TARGET}"
   cd bitcoinfuzz
   export CXXFLAGS="${CXXFLAGS}"
   export CXX="${CXX}"
   [[ -n "${ASAN_OPTIONS}" ]] && export ASAN_OPTIONS="${ASAN_OPTIONS}"
   make
-  FUZZ="${TARGET}" ./bitcoinfuzz -runs=1 "../${CORPUS_DIR}"
+  FUZZ="${TARGET}" ./bitcoinfuzz -runs=1 "$@" "../${CORPUS_DIR}"
 else
   echo "Corpus ./${CORPUS_DIR} does not exist. Skipping."
 fi