chore(desktop): Tauri 命令 @reserved 全量标注 — 88个无前端调用命令已标注

- 新增 66 个 @reserved 标注 (已有 22 个)
- 覆盖: agent/butler/classroom/hand/mcp/pipeline/skill/trigger/viking/zclaw 等模块
- MCP 命令增加 @connected 注释说明前端接入路径
- @reserved 总数: 89 (含 identity_init)

desktop/src-tauri/src/intelligence/user_profiler.rs

@@ -9,7 +9,7 @@ use std::sync::Arc;
 
 use chrono::Utc;
 use tracing::{debug, warn};
-use zclaw_memory::fact::{Fact, FactCategory};
+use zclaw_memory::fact::Fact;
 use zclaw_memory::user_profile_store::{
     CommStyle, Level, UserProfile, UserProfileStore,
 };