feat(processor): 同步心跳数据到 room_status 表

- 在 HeartbeatProcessor 中新增异步同步逻辑，在历史表写入成功后尝试更新 room_status 表
- 实现 DatabaseManager.upsertRoomStatus 方法，支持批量更新和自动分区创建
- 添加批次内去重逻辑，避免 PostgreSQL ON CONFLICT 冲突
- 新增相关文档：同步方案、测试报告和提案说明

openspec/changes/2026-02-06-room-status-sync/proposal.md

@@ -0,0 +1,20 @@
+# Proposal: Synchronize Heartbeat Data to Room Status Table
+
+## Background
+The `room_status.room_status_moment` table is a shared table for real-time device status. The heartbeat service needs to synchronize relevant fields from Kafka messages to this table.
+
+## Changes
+1.  **Database Schema**:
+    *   Add `bright_g` (INT2) and `agreement_ver` (TEXT) columns to `room_status.room_status_moment`.
+    *   Add a UNIQUE INDEX on `(hotel_id, room_id, device_id)` to support efficient UPSERT operations.
+
+2.  **Application Logic**:
+    *   Implement `upsertRoomStatus` in `DatabaseManager`.
+    *   Call this method in `HeartbeatProcessor` after successful insertion into the history table.
+    *   Map `version` to `agreement_ver` and `bright_g` to `bright_g`.
+
+## Tasks
+- [ ] Update `docs/room_status_moment.sql` with new columns and index.
+- [ ] Update `docs/plan-room-status-sync.md` with new fields and finalized plan.
+- [ ] Implement `upsertRoomStatus` in `DatabaseManager`.
+- [ ] Integrate into `HeartbeatProcessor`.