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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.md
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@@ -295,6 +295,7 @@ If `MEMORY_TENCENTDB_GATEWAY_API_KEY` is unset, the plugin also looks at `TDAI_G
| Field | Default | Description |
| :--- | :--- | :--- |
| `timezone` | `"system"` | Timezone for user/LLM-facing timestamps: `"system"` (follow process tz) / IANA name (`Asia/Shanghai`) / offset string (`+08:00`) |
| `storeBackend` | `"sqlite"` | Storage backend: `sqlite` |
| `recall.strategy` | `"hybrid"` | Recall strategy: `keyword` / `embedding` / `hybrid` (RRF fusion, recommended) |
| `recall.maxResults` | `5` | Number of items returned per recall |