docs: add ja language

Author: gusye1234

docs/site/DOC.md

@@ -2145,7 +2145,7 @@ minimum_chats_token_size_for_event_summary: 256
 - `use_timezone`: string, default to `null`. Options include `"UTC"`, `"America/New_York"`, `"Europe/London"`, `"Asia/Tokyo"`, and `"Asia/Shanghai"`. If not set, the system's local timezone is used.
 
 ### LLM Configuration
-- `language`: string, default to `"en"`, available options `{"en", "zh"}`. The prompt language of Memobase.
+- `language`: string, default to `"en"`, available options `{"en", "zh", "ja"}`. The prompt language of Memobase.
 - `llm_style`: string, default to `"openai"`, available options `{"openai", "doubao_cache"}`. The LLM provider style.
 - `llm_base_url`: string, default to `null`. The base URL of any OpenAI-Compatible API.
 - `llm_api_key`: string, required. Your LLM API key.

docs/site/introduction.mdx

@@ -10,11 +10,15 @@ It's a fast, scalable, long-term **user memory backend** for your AI, helping yo
   <img src="/images/starter.png" />
 </Frame>
 
-We currently support the following user memory types from chat interactions:
-- [x] [Profile Memory](./features/profile/) - Understand who the user is.
-- [x] [Event Memory](./features/event/) - Track what has happened in the user's life.
-- [ ] Schedule Memory - Manage the user's calendar (Coming Soon).
-- [ ] Social Memory - Map the user's relationships (Coming Soon).
+
+## Multi-Lingual Support
+
+To optimize performance across different languages, Memobase comes with **built-in multi-lingual prompts**. Currently supported languages include:
+- **English (en)** - Default language
+- **Chinese (zh)** - Optimized for Chinese-speaking users
+- **Japanese (ja)** - Optimized for Japanese-speaking users
+
+This means you can configure Memobase to use native language prompts for better accuracy and performance when working with non-English content. Learn more in the [configuration reference](/references/local_config).
 
 Memobase is under active development, and we are looking for early adopters to become our design partners.
 

docs/site/references/local_config.mdx

@@ -62,7 +62,7 @@ minimum_chats_token_size_for_event_summary: 256
 - `use_timezone`: string, default to `null`. Options include `"UTC"`, `"America/New_York"`, `"Europe/London"`, `"Asia/Tokyo"`, and `"Asia/Shanghai"`. If not set, the system's local timezone is used.
 
 ### LLM Configuration
-- `language`: string, default to `"en"`, available options `{"en", "zh"}`. The prompt language of Memobase.
+- `language`: string, default to `"en"`, available options `{"en", "zh", "ja"}`. The prompt language of Memobase.
 - `llm_style`: string, default to `"openai"`, available options `{"openai", "doubao_cache"}`. The LLM provider style.
 - `llm_base_url`: string, default to `null`. The base URL of any OpenAI-Compatible API.
 - `llm_api_key`: string, required. Your LLM API key.