### What problem does this PR solve?
Previously, we added support for previewing PPT and PPTX files in the
backend. Now, we are adding it to the frontend, so when the slides in
the chat interface are referenced, they will no longer be blank.
### Type of change
- Bug Fix (non-breaking change which fixes an issue)
Otherwise, slide files cannot be opened in Chat module
### What problem does this PR solve?
Backend Reason (API): In the api/utils/web_utils.py file of the backend,
the CONTENT_TYPE_MAP dictionary is missing ppt and pptx.
MIME type mapping. This means that when the frontend requests a PPTX
file, the backend cannot correctly inform the browser that it is a PPTX
file, resulting in the file being displayed incorrectly.
Type identification error.
### Type of change
- Bug Fix (non-breaking change which fixes an issue)
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
### What problem does this PR solve?
Feat: add forgot password reset, solve #8547
### Type of change
- [X] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Add SMTP support for user invitation emails
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Add MCP dashboard functionalities list_tools and test_tool.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Add MCP server dashboard operations.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix potential SSRF attack vulnerability
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>
### What problem does this PR solve?
Knowledge base management supports crawling information from web pages
and generating PDF documents
### Type of change
- [x] New Feature (Support document from web pages)
