docs(openspec): archive realtime-booking-chat,同步主 specs

- archive openspec/changes/realtime-booking-chat → archive/2026-05-29-realtime-booking-chat
- 新增 openspec/specs/booking-chat/spec.md(即時訊息完整規格)
- 新增 openspec/specs/user-presence/spec.md(Presence Channel 規格)
- 更新 openspec/specs/booking-lifecycle/spec.md(補訊息頻道語義與封存 Scenario)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-05-29 01:14:52 +08:00
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@@ -31,10 +31,19 @@ Member SHALL 能選擇一個開放時段送出預約,系統記錄價格快照
- `confirmed``member_cancelled`Member 取消)
- `confirmed``provider_cancelled`Provider 取消)
各狀態對應訊息頻道語義:
- `confirmed``presence-booking.{id}` 頻道開放,可讀寫訊息
- `completed`:頻道關閉,訊息歷史封存唯讀
- 其餘狀態(`pending``rejected``expired``member_cancelled``provider_cancelled`):無訊息頻道
#### Scenario: 非法狀態轉換被拒絕
- **WHEN** 任何角色嘗試執行上述以外的狀態轉換
- **THEN** 系統回傳 422,說明當前狀態不允許此操作
#### Scenario: confirmed 轉 completed 時封存訊息頻道
- **WHEN** Scheduler 將 `confirmed` 預約轉為 `completed`
- **THEN** 對應 `presence-booking.{id}` 頻道不再授權新連線;現有訊息歷史保留,後續 POST 訊息回傳 403
### Requirement: Provider 確認或拒絕預約
Provider SHALL 能對自己課程的 `pending` 預約執行確認或拒絕。確認時才真正佔用時段名額。