docs(i18n): add glossary entries for new plugin spine docs

docs/.i18n/glossary.zh-CN.json

@@ -222,5 +222,21 @@
   {
     "source": "env var",
     "target": "环境变量"
+  },
+  {
+    "source": "Plugin Execution Spine Contract",
+    "target": "插件执行骨架契约"
+  },
+  {
+    "source": "Plugin Health Schema",
+    "target": "插件健康状态模式"
+  },
+  {
+    "source": "Resumable Handoff Packet Schema (v1)",
+    "target": "可恢复交接包模式（v1）"
+  },
+  {
+    "source": "Retry + Dead-letter Policy",
+    "target": "重试与死信策略"
   }
 ]