feat(ci): enhance caching strategy and update workflows for pnpm and Go

- Updated CI workflows to export cache paths for pnpm and Go, improving cache efficiency and reducing package download times.
- Replaced corepack enable step with cache path exports in multiple workflows.
- Adjusted cache paths to utilize environment variables for better flexibility and clarity.
- Enhanced README documentation to reflect changes in caching mechanisms and runner configurations.

scripts/ci/golangci-lint.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env sh
+# Бинарь golangci-lint в GOBIN (кэш actions/cache), без goinstall и без hashFiles.
+set -eu
+VER="${GOLANGCI_LINT_VERSION:-v1.64.8}"
+: "${GOBIN:?GOBIN required — run scripts/ci/export-cache-env.sh after setup-go}"
+
+mkdir -p "$GOBIN"
+export PATH="${GOBIN}:${PATH}"
+if [ -n "${GOLANGCI_LINT_CACHE:-}" ]; then
+  mkdir -p "$GOLANGCI_LINT_CACHE"
+  export GOLANGCI_LINT_CACHE
+fi
+
+if [ ! -x "${GOBIN}/golangci-lint" ]; then
+  echo "install golangci-lint ${VER} -> ${GOBIN}"
+  curl -sSfL "https://raw.githubusercontent.com/golangci/golangci-lint/${VER}/install.sh" \
+    | sh -s -- -b "$GOBIN" "$VER"
+fi
+golangci-lint version
+golangci-lint run