新增 skills、README，指定 opencode 的启动行为

.opencode/skills/business/project-workspace/snapshots/SKILL.md

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+---
+name: tjwater-action-business-project-workspace-snapshots
+description: business/project-workspace 下 snapshots 操作技能。
+version: 3.0.0
+---
+
+# snapshots Action Skill
+
+## 简介
+负责 `business/project-workspace` 场景下 `snapshots` 的具体接口调用。
+
+## 子模块索引 (渐进式引导)
+- 当前为叶子节点，直接使用下方接口目录。
+
+## 接口目录
+| Method | Path | Summary | Required Params | Optional Params |
+|---|---|---|---|---|
+| POST | `/api/v1/batch/` | 执行批量命令 | network (query) | - |
+| POST | `/api/v1/compressedbatch/` | 执行压缩批量命令 | network (query) | - |
+| GET | `/api/v1/getcurrentoperationid/` | 获取当前操作ID | network (query) | - |
+| GET | `/api/v1/getrestoreoperation/` | 获取恢复操作ID | network (query) | - |
+| GET | `/api/v1/getsnapshots/` | 获取快照列表 | network (query) | - |
+| GET | `/api/v1/havesnapshot/` | 检查快照是否存在 | network (query), tag (query) | - |
+| GET | `/api/v1/havesnapshotforcurrentoperation/` | 检查当前操作快照是否存在 | network (query) | - |
+| GET | `/api/v1/havesnapshotforoperation/` | 检查操作快照是否存在 | network (query), operation (query) | - |
+| POST | `/api/v1/pickoperation/` | 选择操作 | network (query), operation (query) | discard (query) |
+| POST | `/api/v1/picksnapshot/` | 选择快照 | network (query), tag (query) | discard (query) |
+| POST | `/api/v1/redo/` | 重做操作 | network (query) | - |
+| POST | `/api/v1/setrestoreoperation/` | 设置恢复操作ID | network (query), operation (query) | - |
+| GET | `/api/v1/syncwithserver/` | 与服务器同步 | network (query), operation (query) | - |
+| POST | `/api/v1/takenapshotforcurrentoperation` | 为当前操作创建快照（兼容模式） | network (query), tag (query) | - |
+| POST | `/api/v1/takesnapshot/` | 创建快照 | network (query), tag (query) | - |
+| POST | `/api/v1/takesnapshotforcurrentoperation` | 为当前操作创建快照 | network (query), tag (query) | - |
+| POST | `/api/v1/takesnapshotforoperation/` | 为操作创建快照 | network (query), operation (query), tag (query) | - |
+| POST | `/api/v1/undo/` | 撤销操作 | network (query) | - |
+
+- 覆盖方法：`GET, POST`