docs(robot): accept guided hotspot binding v1

.project-docs/10-decisions/decision-index.md

@@ -5,6 +5,7 @@
 | ID | Decision | Status | Date | Applies To | Detail |
 |---|---|---|---|---|---|
 | ADR-001 | AI 绘画采用 Workspace / Conversation / Task 分层状态与服务端持久 Conversation Session | Accepted | 2026-08-11 | AI 绘画客户端、Main 适配器、Works Square API | `adr-001-ai-design-conversation-ownership.md` |
+| ADR-002 | Robot V1 采用 Main 门控的引导式热点配网并衔接现有六位 Binding | Accepted / planned, default off | 2026-08-16 | Robot Renderer、Host API、Electron Main、现有固件热点入口 | `adr-002-robot-guided-hotspot-binding-v1.md` |
 
 ## Superseded Decisions