docs: 同步 persona_remove 到架构文档

docs/en/architecture.md

@@ -238,6 +238,7 @@ def main():
 - `context_rewrite` - Compress single-turn tool call context
 
 ### Persona Tools (2)
+| `persona_remove` | Delete single persona attribute | Keep other attributes unchanged |
 - `persona_update` - Update persona
 - `persona_clear` - Clear persona
 

docs/zh/architecture.md

@@ -244,6 +244,7 @@ def main():
 - `context_rewrite` - 压缩单轮工具调用上下文
 
 ### 人设工具 (2个)
+| `persona_remove` | 删除单条人设属性 | 保留其他人设不变 |
 - `persona_update` - 更新人设
 - `persona_clear` - 清除人设