feat(scripts): add cross-platform tosutil installers

- Add Windows PowerShell installer with SHA256 verification and PATH setup
- Add macOS installer with arch detection and quarantine removal
- Enhance Linux installer with amd64/arm64 architecture detection
- Rename macOS migrate_remote.sh to migrate-remote.sh

macOS/install-tosutil.command

@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Helper function to print and execute commands
+run_cmd() {
+    echo ">> Running: $*"
+    "$@"
+}
+
+# Determine sudo requirement
+SUDO=""
+if [ "$(id -u)" -ne 0 ]; then
+    SUDO="sudo"
+fi
+
+echo "=== Starting tosutil installation for macOS ==="
+
+# 1. Architecture Detection
+ARCH=$(uname -m)
+case "$ARCH" in
+    x86_64)
+        BIN_URL="https://m645b3e1bb36e-mrap.mrap.accesspoint.tos-global.volces.com/darwin/amd64/tosutil"
+        SHA_URL="https://m645b3e1bb36e-mrap.mrap.accesspoint.tos-global.volces.com/darwin/amd64/tosutil.sha256sum"
+        echo "Detected architecture: Intel (amd64)"
+        ;;
+    arm64)
+        BIN_URL="https://m645b3e1bb36e-mrap.mrap.accesspoint.tos-global.volces.com/darwin/arm64/tosutil"
+        SHA_URL="https://m645b3e1bb36e-mrap.mrap.accesspoint.tos-global.volces.com/darwin/arm64/tosutil.sha256sum"
+        echo "Detected architecture: Apple Silicon (arm64)"
+        ;;
+    *)
+        echo "Error: Unsupported architecture: $ARCH" >&2
+        exit 1
+        ;;
+esac
+
+TARGET_DIR="/usr/local/bin"
+TARGET_PATH="${TARGET_DIR}/tosutil"
+
+# 2. Create isolated temporary directory
+TMP_DIR=$(mktemp -d /tmp/tosutil-install.XXXXXX)
+trap 'rm -rf "$TMP_DIR"' EXIT
+cd "$TMP_DIR"
+
+# Step 1: Download binary and checksum via curl
+echo -e "\n[1/5] Downloading tosutil binary and SHA256 checksum..."
+run_cmd curl -fsSL -o tosutil "$BIN_URL"
+run_cmd curl -fsSL -o tosutil.sha256sum "$SHA_URL"
+
+# Step 2: Verify SHA256
+echo -e "\n[2/5] Verifying SHA256 checksum..."
+EXPECTED_HASH=$(awk '{print $1}' tosutil.sha256sum)
+echo ">> Running: echo \"$EXPECTED_HASH  tosutil\" | shasum -a 256 -c -"
+echo "$EXPECTED_HASH  tosutil" | shasum -a 256 -c -
+
+# Step 3: Ensure /usr/local/bin exists and move binary
+echo -e "\n[3/5] Moving binary to ${TARGET_PATH}..."
+if [ ! -d "$TARGET_DIR" ]; then
+    run_cmd $SUDO mkdir -p "$TARGET_DIR"
+fi
+run_cmd $SUDO mv tosutil "$TARGET_PATH"
+
+# Step 4: Set permissions and bypass macOS Gatekeeper quarantine
+echo -e "\n[4/5] Setting permissions and removing quarantine flag..."
+run_cmd $SUDO chown root:wheel "$TARGET_PATH"
+run_cmd $SUDO chmod 755 "$TARGET_PATH"
+# Remove quarantine attribute if present
+if run_cmd $SUDO xattr -d com.apple.quarantine "$TARGET_PATH" 2>/dev/null; then
+    echo "Removed quarantine attribute."
+fi
+
+# Step 5: Verify installation
+echo -e "\n[5/5] Checking installation..."
+run_cmd tosutil version || run_cmd tosutil --version || true
+
+echo -e "\n========================================================"
+echo -e "✅ tosutil installed successfully to ${TARGET_PATH}."
+echo -e "========================================================"
+echo -e "\nNext Steps:"
+echo -e "1. Initialise and configure your credentials:"
+echo -e '   tosutil config -i "${TOS_ACCESS_KEY}" -k "${TOS_SECRET_KEY}" -e "${TOS_ENDPOINT}" -re "${TOS_REGION}"'
+echo -e "\n2. For more detailed documentation, visit:"
+echo -e "   https://docs.volcengine.com/docs/6349/148775?lang=zh\n"