feat: add dev script to update snapshots (#2397)

### Changes are visible to end-users: no

### Test plan
N/A

Author: Mivr

e2e/pnpm_lockfiles/update-snapshots.sh

@@ -0,0 +1,136 @@
+#!/usr/bin/env bash
+# Update all snapshots and generated sources across the repository
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$REPO_ROOT"
+
+# Color output
+GREEN='\033[0;32m'
+BLUE='\033[0;34m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+print_section() {
+    echo -e "${BLUE}==> $1${NC}"
+}
+
+print_success() {
+    echo -e "${GREEN}✓ $1${NC}"
+}
+
+print_category() {
+    echo ""
+    echo -e "${YELLOW}========================================${NC}"
+    echo -e "${YELLOW}$1${NC}"
+    echo -e "${YELLOW}========================================${NC}"
+}
+
+# Track failures
+FAILED_TARGETS=()
+
+run_target() {
+    local dir="$1"
+    local target="$2"
+    local description="$3"
+    local extra_flags="${4:-}"
+
+    echo ""
+    print_section "$description"
+    if (cd "$dir" && bazel run $extra_flags "$target"); then
+        print_success "$description"
+    else
+        echo "✗ Failed: $description"
+        FAILED_TARGETS+=("$dir -> $target")
+    fi
+}
+
+echo "========================================"
+echo "Updating all snapshots and sources..."
+echo "========================================"
+
+##############################################################################
+# E2E TEST SNAPSHOTS
+##############################################################################
+
+print_category "E2E TEST SNAPSHOTS"
+
+# pnpm_lockfiles - Multiple versions (bzlmod only, no workspace mode in this repo)
+for version in v54 v60 v61 v90 v101; do
+    run_target "$REPO_ROOT/e2e/pnpm_lockfiles" "//$version:repos" "pnpm_lockfiles/$version" "--enable_bzlmod=true"
+done
+
+# npm_translate_lock
+run_target "$REPO_ROOT/e2e/npm_translate_lock" "//:write_npm_translate_lock_wksp" "npm_translate_lock" "--enable_bzlmod=false"
+
+# npm_translate_lock_empty
+run_target "$REPO_ROOT/e2e/npm_translate_lock_empty" "//:write_npm_translate_lock_wksp" "npm_translate_lock_empty" "--enable_bzlmod=false"
+
+# npm_translate_lock_replace_packages
+run_target "$REPO_ROOT/e2e/npm_translate_lock_replace_packages" "//:write_npm_translate_lock_wksp" "npm_translate_lock_replace_packages (wksp)" "--enable_bzlmod=false"
+run_target "$REPO_ROOT/e2e/npm_translate_lock_replace_packages" "//:write_npm_translate_lock_bzlmod" "npm_translate_lock_replace_packages (bzlmod)" "--enable_bzlmod=true"
+
+# npm_translate_lock_disable_hooks
+run_target "$REPO_ROOT/e2e/npm_translate_lock_disable_hooks" "//:write_npm_translate_lock_wksp" "npm_translate_lock_disable_hooks (wksp)" "--enable_bzlmod=false"
+run_target "$REPO_ROOT/e2e/npm_translate_lock_disable_hooks" "//:write_npm_translate_lock_defs" "npm_translate_lock_disable_hooks (defs)" "--enable_bzlmod=true"
+
+# gyp_no_install_script
+run_target "$REPO_ROOT/e2e/gyp_no_install_script" "//:write_npm_translate_lock_wksp" "gyp_no_install_script (wksp)" "--enable_bzlmod=false"
+run_target "$REPO_ROOT/e2e/gyp_no_install_script" "//:write_npm_translate_lock_bzlmod" "gyp_no_install_script (bzlmod)" "--enable_bzlmod=true"
+
+# pnpm_workspace
+run_target "$REPO_ROOT/e2e/pnpm_workspace" "//:repos" "pnpm_workspace" "--enable_bzlmod=true"
+
+# pnpm_workspace_rerooted
+run_target "$REPO_ROOT/e2e/pnpm_workspace_rerooted" "//:repos" "pnpm_workspace_rerooted" "--enable_bzlmod=true"
+
+##############################################################################
+# ROOT TEST SNAPSHOTS
+##############################################################################
+
+print_category "ROOT TEST SNAPSHOTS"
+
+# npm/private/test - npm translation test snapshots
+run_target "$REPO_ROOT" "//npm/private/test:write_npm_translate_lock" "npm/private/test" "--enable_bzlmod=true"
+
+# js/private/test - js_binary launcher snapshot
+run_target "$REPO_ROOT" "//js/private/test:write_launcher" "js/private/test" "--enable_bzlmod=true"
+
+##############################################################################
+# GENERATED SOURCES
+##############################################################################
+
+print_category "GENERATED SOURCES"
+
+# Watch protocol
+run_target "$REPO_ROOT" "//js/private/watch:watch_checked" "Watch protocol" "--enable_bzlmod=true"
+
+# Devserver bundle
+run_target "$REPO_ROOT" "//js/private/devserver:watch_checked" "Devserver bundle" "--enable_bzlmod=true"
+
+# Worker bundle
+run_target "$REPO_ROOT" "//js/private/worker:worker_checked" "Worker bundle" "--enable_bzlmod=true"
+
+# Node patches
+run_target "$REPO_ROOT" "//js/private/node-patches:checked_in_compile" "Node patches" "--enable_bzlmod=true"
+
+# Coverage bundle
+run_target "$REPO_ROOT" "//js/private/coverage:coverage_checked" "Coverage bundle" "--enable_bzlmod=true"
+
+##############################################################################
+# SUMMARY
+##############################################################################
+
+echo ""
+echo "========================================"
+if [ ${#FAILED_TARGETS[@]} -eq 0 ]; then
+    print_success "All updates completed successfully!"
+else
+    echo "✗ Some targets failed:"
+    for failed in "${FAILED_TARGETS[@]}"; do
+        echo "  - $failed"
+    done
+    exit 1
+fi
+echo "========================================"