chore(build): add caching for Go dependencies and FreeBSD-specific artifacts in release workflow

.github/workflows/release.yaml

@@ -73,6 +73,15 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: true
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: go-${{ runner.os }}-${{ runner.arch }}-${{ matrix.target }}-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            go-${{ runner.os }}-${{ runner.arch }}-${{ matrix.target }}-
+            go-${{ runner.os }}-${{ runner.arch }}-
       - name: Generate Build Metadata
         shell: bash
         run: |
@@ -143,6 +152,16 @@ jobs:
           git show FETCH_HEAD:models.json > internal/registry/models/models.json
       - name: Fetch tags
         run: git fetch --force --tags
+      - uses: actions/cache@v4
+        with:
+          path: |
+            .freebsd-cache/${{ matrix.goarch }}/go
+            .freebsd-cache/${{ matrix.goarch }}/gocache
+            .freebsd-cache/${{ matrix.goarch }}/gomodcache
+          key: freebsd-${{ matrix.goarch }}-go${{ env.GO_VERSION }}-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            freebsd-${{ matrix.goarch }}-go${{ env.GO_VERSION }}-
+            freebsd-${{ matrix.goarch }}-
       - name: Generate Build Metadata
         run: |
           echo "RELEASE_VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_ENV
@@ -162,10 +181,18 @@ jobs:
         shell: cpa.sh {0}
         run: |
           set -eu
-          fetch -o /tmp/go.tar.gz "https://go.dev/dl/go${GO_VERSION}.freebsd-${GOARCH}.tar.gz"
-          rm -rf /tmp/go
-          tar -C /tmp -xzf /tmp/go.tar.gz
-          export PATH="/tmp/go/bin:$PATH"
+          cache_root=".freebsd-cache/${GOARCH}"
+          go_root="${cache_root}/go"
+          mkdir -p "${cache_root}/gocache" "${cache_root}/gomodcache"
+          if [ ! -x "${go_root}/bin/go" ]; then
+            fetch -o /tmp/go.tar.gz "https://go.dev/dl/go${GO_VERSION}.freebsd-${GOARCH}.tar.gz"
+            rm -rf "$go_root"
+            mkdir -p "$cache_root"
+            tar -C "$cache_root" -xzf /tmp/go.tar.gz
+          fi
+          export GOCACHE="$PWD/${cache_root}/gocache"
+          export GOMODCACHE="$PWD/${cache_root}/gomodcache"
+          export PATH="$PWD/${go_root}/bin:$PATH"
           go version
 
           archive_dir="dist/${TARGET}/archive"