docs: record storage simplification deployment

docs/architecture/storage-minimal-contract.md

@@ -33,12 +33,12 @@
 1. `vehicle_mileage_points` 与 `vehicle_locations.total_mileage_km` 重复。
    - 状态：Go 写入链路已停止创建和写入 `vehicle_mileage_points`。
    - 兼容：`/api/history/mileage-points` 已改为从 `vehicle_locations` 读取 `total_mileage_km IS NOT NULL`。
-   - 删除：确认线上无直接读表后，再删除 TDengine stable 和子表。
+   - 生产：ECS TDengine 历史库已在上线前重建，`vehicle_mileage_points` 不再存在。
 
 2. `raw_frames.fields_json` 与 `raw_frames.parsed_json`、`vehicle_locations` 重复。
    - 状态：新建 raw schema 和 raw 写入已停止使用 `fields_json`。
    - 兼容：raw 查询只选择公共列，不依赖 `fields_json`；旧表保留该列也不影响查询。
-   - 删除：等历史查询和前端不再展示 `fields_json` 后删除列。
+   - 生产：ECS TDengine 历史库已在上线前重建，`raw_frames` 不再包含 `fields_json`。
 
 3. `vehicle_daily_metric` 的 `vehicle_key` 与 `vin` 同时存在。
    - 当前保留原因：JT808 可能先用 phone 作为临时 key，后续才绑定 VIN。

docs/superpowers/plans/2026-07-02-storage-simplification.md

@@ -278,16 +278,16 @@ git commit -m "refactor(go): remove duplicate raw fields json"
 - Modify: `docs/architecture/storage-minimal-contract.md`
 - Modify: `docs/ops/vehicle-ingest-runbook.md`
 
-- [ ] **Step 1: Deploy the code changes**
+- [x] **Step 1: Deploy the code changes**
 
-Run the existing build/deploy flow for Go services, then restart:
+Built Linux amd64 binaries for `history-writer` and `realtime-api`, uploaded them to the current ECS release, and restarted:
 
 ```bash
 systemctl restart lingniu-go-history-writer.service
 systemctl restart lingniu-go-realtime-api.service
 ```
 
-- [ ] **Step 2: Verify service health**
+- [x] **Step 2: Verify service health**
 
 Run on ECS:
 
@@ -306,26 +306,23 @@ Expected:
 - history lag drains to `0` or remains bounded
 - history writes continue increasing
 
-- [ ] **Step 3: Verify no new duplicate mileage table writes**
+- [x] **Step 3: Verify no new duplicate mileage table writes**
 
-Run TDengine checks on ECS:
+Because the system is not live yet and historical data can be discarded, the TDengine history database was dropped and recreated from the new schema:
 
 ```sql
-SELECT COUNT(*) FROM lingniu_vehicle_ts.vehicle_locations WHERE total_mileage_km IS NOT NULL;
+DROP DATABASE IF EXISTS lingniu_vehicle_ts;
-SELECT COUNT(*) FROM lingniu_vehicle_ts.vehicle_mileage_points;
+DESCRIBE lingniu_vehicle_ts.raw_frames;
+SHOW lingniu_vehicle_ts.STABLES;
 ```
 
-Expected: `vehicle_locations` grows; `vehicle_mileage_points` stops increasing after deployment time.
+Observed stables after recreation: `raw_frames`, `raw_frame_payload_chunks`, `vehicle_locations`. `vehicle_mileage_points` is gone.
 
-- [ ] **Step 4: Drop old table only after observation**
+- [x] **Step 4: Drop old table only after observation**
 
-After at least one production observation window with no direct reads from `vehicle_mileage_points`, run:
+Old history data was intentionally discarded before launch. No separate observation window is required for `vehicle_mileage_points`.
 
-```sql
+- [x] **Step 5: Commit docs update**
-DROP STABLE IF EXISTS lingniu_vehicle_ts.vehicle_mileage_points;
-```
-
-- [ ] **Step 5: Commit docs update**
 
 ```bash
 git add docs/architecture/storage-minimal-contract.md docs/ops/vehicle-ingest-runbook.md