### What problem does this PR solve?
This PR follows up on
[#15863](https://github.com/infiniflow/ragflow/pull/15863) (Korean i18n)
with translation refinements and i18n coverage for hardcoded strings
found in the UI.
- Refine awkward Korean phrasing (e.g. 'Chunk 만들기' → 'Chunk 생성', '유형' →
'타입', etc.)
- Apply i18n to hardcoded strings in `message-item`,
`next-message-item`, `multi-select`, `chat-prompt-engine`, and various
filter hooks
- Rename `use-selelct-filters.ts` → `use-select-filters.ts` (typo fix)
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
GraphRAG feature - Part 1 - add spacy to extract entity and relation
<img width="1621" height="1288" alt="image"
src="https://github.com/user-attachments/assets/aadeddad-94da-46c6-adad-9c3784181f61"
/>
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: enable sync deleted files for connector
1. first comes with github
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added "sync deleted files" feature for data sources, enabling
automatic removal of files deleted from the source system.
* Added multilingual support for the new sync deleted files setting
across multiple languages.
* **UI Improvements**
* Improved checkbox form field rendering and layout.
* Enhanced full-width display for authentication token input fields.
### What problem does this PR solve?
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
- [x] Refactoring
---------
Co-authored-by: Zhichang Yu <yuzhichang@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
### What problem does this PR solve?
RAGFlow had no Turkish language support. This PR adds Turkish (tr)
locale translations to the UI.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Co-authored-by: Mustafa YILDIZ <mustafa.yildiz@cilek.com>
### What problem does this PR solve?
- Unify top level pages structure
- Standardize locale language codes (BCP 47) and time zones (IANA tz)
> **Note:**
> Newly created user info brings non-standard default values `timezone:
"UTC+8\tAsia/Shanghai"` and `language: "English"`.
### Type of change
- [x] Refactoring
### What problem does this PR solve?
This PR implements comprehensive Arabic language support for the RAGFlow
application. The changes include:
- Complete Arabic translation of all UI text elements in the web
interface
- RTL (right-to-left) layout support for Arabic content
- Localization updates for all supported languages (ar, bg, de, en, es,
fr, id, it, ja, pt-br, ru, vi, zh-traditional, zh)
- UI component adjustments to properly display Arabic text and support
RTL layout
The implementation ensures that Arabic-speaking users can fully interact
with the application in their native language with proper text rendering
and layout direction.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
<img width="2866" height="1617" alt="image"
src="https://github.com/user-attachments/assets/f2751b34-1b65-4867-b81d-a1068c17b9b7"
/>
---------
Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>
### What problem does this PR solve?
This PR adds end-to-end Arabic support in production. It also adds a
full Arabic README
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
- [x] Documentation Update
