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feat(timezone): make all user/LLM-facing timestamps timezone-configurable (#129)

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Add top-level `timezone` config option (default: "system") supporting
IANA names and UTC offset strings (ECMA-402 2024).

- Introduce unified `src/utils/time.ts` module with formatForLLM,
  formatLocalDate, formatLocalDateTime, startOfLocalDay, nowInstantISO
- Converge 4 scattered time helpers into the single module
- L1 extraction / auto-recall / scene-extraction / persona-generation
  prompts now emit ISO 8601 with explicit UTC offset
- Add timezone declaration to LLM system prompts
- Local-day shard boundaries and cleaner cutoff follow configured tz
- Storage instants (SQLite/TCVDB) remain UTC — no data migration needed
- 38 unit tests covering IANA, offset, DST, half-hour zones, fallback
This commit is contained in:
Ruida Xu
2026-06-04 11:44:01 +08:00
committed by GitHub
parent c6ed755835
commit 32ba4d303d
15 changed files with 702 additions and 48 deletions
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README_CN.md
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@@ -299,6 +299,7 @@ export MEMORY_TENCENTDB_GATEWAY_API_KEY="<与 Gateway 同一份密钥>"
| 字段 | 默认 | 说明 |
| :--- | :--- | :--- |
| `timezone` | `"system"` | 时区：`"system"`（跟随系统）/ IANA 名（`Asia/Shanghai`）/ offset 串（`+08:00`） |
| `storeBackend` | `"sqlite"` | 存储后端：`sqlite` |
| `recall.strategy` | `"hybrid"` | 召回策略：`keyword` / `embedding` / `hybrid`（RRF 融合，推荐） |
| `recall.maxResults` | `5` | 每次召回条数 |