### 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?
- Adjust UI styles in **Dataset** pages.
- Adjust several shared components styles
- Modify files and directory structure in `src/layouts`
### Type of change
- [x] Refactoring
### What problem does this PR solve?
Refactor: UmiJs -> Vite+React
### Type of change
- [x] Refactoring
---------
Co-authored-by: Liu An <asiro@qq.com>
### What problem does this PR solve?
Fixes: Added session variable types and modified configuration
- Added more types of session variables
- Modified the embedding model switching logic in the knowledge base
configuration
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: Home and team page style adjustment, and some bug fixes#10703
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feature (web): Optimize dataset pages and segmented components #3221
-Add the activeClassName property to Segmented components to customize
the selected state style
-Update the icons and captions of the relevant components on the dataset
page
-Modify the parsing status column title of the dataset table
-Optimize the Segmented component style of the homepage application
section
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix (web): Update the style of segmented controls and add metallic
texture gradients #3221
-Modified the selected state style of Segmented components, adding
metallic texture gradient and lower border
-Added a metallic gradient background image in tailwind.diag.js
-Added the -- metallic variable in tailwind.css to define metallic
texture colors
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Replace color variables according to design draft #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
fix dataset-page's bugs,Input component supports icon, added Radio
component, and removed antd from chunk-result-bar page [#3221
](https://github.com/infiniflow/ragflow/issues/3221)
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Modify the segmented component style #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
