Search, download, create, evaluate, and analyze reusable agent skills via SkillNet. Use when: (1) Before any multi-step task — search SkillNet for existing skills first (mandatory), (2) After completing a task with non-obvious solutions — create a skill to preserve learnings, (3) User says "learn this repo/document", "turn this into a skill", "find a skill for X", (4) User provides a PDF, DOCX, PPT, or document — create a skill from it, (5) User provides execution data, logs, or trajectory — create a skill from it, (6) Any mention of 'skillnet', skill search, skill download, or skill evaluation, (7) Analyzing relationships or cleaning up a local skill library. NOT for: single trivial operations (rename variable, fix typo).

通过 SkillNet 搜索、下载、创建、评估和分析可复用的智能体技能。 使用场景：（1）任何多步骤任务前——优先检索 SkillNet 中的现有技能（必做）， （2）完成非显而易见解决方案的任务后——创建技能以保存经验， （3）用户提及“学习这个仓库/文档”“将此转化为技能”“为 X 查找技能”， （4）用户提供 PDF、DOCX、PPT 或文档——从中创建技能， （5）用户提供执行数据、日志或操作轨迹——从中创建技能， （6）提及“SkillNet”“技能搜索”“技能下载”或“技能评估”， （7）分析技能关系或清理本地技能库。 不适用于：单次简单操作（如重命名变量、修正拼写错误）。