[xlorne]

同步 17.x 的 issue #214 修复，按 JDK 8 做代际适配：

• 新增 GroovyScriptCacheEvent（ISyncEvent）：脚本保存/删除后经 EventPusher 进程内分发，业务可通过 IHandler 监听脚本变更
• 新增 GroovyScriptCacheSync SPI（默认 LocalGroovyScriptCacheSync）：多实例部署时可接入 Redis pub/sub 等实现跨实例广播，远端实例 receive 后失效本地缓存并回源仓储
• 新增 GroovyScriptCache 缓存容器接口与 DefaultGroovyScriptCache：LRU 容器抽象为可替换策略，支持 Redis 等共享缓存实现
• GroovyScript.save()/remove() 写路径发布缓存变更事件；GroovyScriptCacheContext.remove 改为纯本地失效
• 能力文档补充多实例部署章节与 Redis 实现方案示例

Ref #214

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Special notes for reviews

[codecov]

Codecov Report

❌ Patch coverage is 94.36620% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.20%. Comparing base (85f3849) to head (679874a).
⚠️ Report is 2 commits behind head on 8.2.x.

Files with missing lines	Patch %	Lines
...oot/script/cache/GroovyScriptCacheSyncContext.java	88.23%	1 Missing and 1 partial ⚠️
...ingboot/script/cache/GroovyScriptCacheContext.java	92.85%	0 Missing and 1 partial ⚠️
...pringboot/script/cache/GroovyScriptCacheEvent.java	93.75%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##              8.2.x     #221      +/-   ##
============================================
+ Coverage     87.17%   87.20%   +0.03%     
- Complexity     2329     2357      +28     
============================================
  Files           213      217       +4     
  Lines          6120     6176      +56     
  Branches        411      411              
============================================
+ Hits           5335     5386      +51     
- Misses          641      643       +2     
- Partials        144      147       +3     

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