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/memory/extractor.rs

@@ -473,6 +473,7 @@ If no significant memories found, return empty array: []"#,
 
 // === Tauri Commands ===
 
+// @reserved: memory extraction
 // @connected
 #[tauri::command]
 pub async fn extract_session_memories(
@@ -490,6 +491,7 @@ pub async fn extract_session_memories(
 
 /// Extract memories from session and store to SqliteStorage
 /// This combines extraction and storage in one command
+// @reserved: memory extraction and storage
 // @connected
 #[tauri::command]
 pub async fn extract_and_store_memories(