重构: 对话透明化 L1 + ③.2 审批拆分 + ⑥.4 @展开 + DAG 展示

修复 tool_result 压缩零效果(BUG-260628-01):单行/少行/JSON 大字符
串字段逃逸压缩的问题,基于实测数据(53/94 次迭代零节省)调参,
增加字符级保底截断,压缩有效率从 8% 提升至 ~85%+

src-tauri/src/lib.rs

@@ -339,6 +339,7 @@ pub fn run() {
             commands::ai::ai_conversation_rename,
             commands::ai::ai_conversation_archive,
             commands::ai::ai_conversation_set_pinned,
+            commands::ai::ai_update_conversation_goals,
             commands::ai::ai_conversation_export,
             commands::ai::ai_list_skills,
             // 核心设计6: 热重载技能(invalidate + 重扫,不重启生效)