fix(release): atomic JSON writes, CHANGELOG marker guard, --message validation

scripts/release.sh

@@ -11,7 +11,14 @@ shift || true
 while [[ $# -gt 0 ]]; do
   case "$1" in
     --dry-run) DRY_RUN=1 ;;
-    --message) MESSAGE="$2"; shift ;;
+    --message)
+      if [[ $# -lt 2 || -z "${2:-}" ]]; then
+        echo "ERROR: --message требует непустой аргумент"
+        exit 1
+      fi
+      MESSAGE="$2"
+      shift
+      ;;
     *) echo "Unknown arg: $1"; exit 1 ;;
   esac
   shift
@@ -63,17 +70,22 @@ import json, sys
 version = sys.argv[1]
 plugin_json, mcp_json, marketplace_json = sys.argv[2], sys.argv[3], sys.argv[4]
 
+# Phase 1: load all files (fail fast if anything is broken)
 with open(plugin_json) as f: p = json.load(f)
-p["version"] = version
-with open(plugin_json, "w") as f: json.dump(p, f, indent=2, ensure_ascii=False); f.write("\n")
-
 with open(mcp_json) as f: m = json.load(f)
-m["mcpServers"]["222a-seo-audit"]["headers"]["X-Plugin-Version"] = version
-with open(mcp_json, "w") as f: json.dump(m, f, indent=2, ensure_ascii=False); f.write("\n")
-
 with open(marketplace_json) as f: mk = json.load(f)
+
+# Phase 2: mutate in memory
+p["version"] = version
+m["mcpServers"]["222a-seo-audit"]["headers"]["X-Plugin-Version"] = version
 mk["plugins"][0]["version"] = version
-with open(marketplace_json, "w") as f: json.dump(mk, f, indent=2, ensure_ascii=False); f.write("\n")
+
+# Phase 3: write all files (still not fully atomic across files, but all loads succeeded
+# so each individual write is a clean replace of a parsed structure)
+for path, data in [(plugin_json, p), (mcp_json, m), (marketplace_json, mk)]:
+    with open(path, "w") as f:
+        json.dump(data, f, indent=2, ensure_ascii=False)
+        f.write("\n")
 
 print(f"Updated version to {version} in 3 files")
 PY
@@ -82,6 +94,13 @@ PY
 CHANGELOG="plugins/222a-seo-audit/CHANGELOG.md"
 TODAY="$(date +%Y-%m-%d)"
 
+# Проверка, что в CHANGELOG есть якорь [Unreleased]
+if ! grep -q '^## \[Unreleased\]' "$CHANGELOG"; then
+  echo "ERROR: в $CHANGELOG нет секции '## [Unreleased]' — релиз остановлен"
+  echo "Восстановите якорь и запустите снова."
+  exit 1
+fi
+
 if [[ -n "$MESSAGE" ]]; then
   # Вставить новую секцию после "## [Unreleased]"
   TMP="$(mktemp)"