**Issue**
Strikethrough on a link doesn't render. The toolbar button highlights
but no line
appears (#15106).
**Solution**
affine-link hardcoded text-decoration: none in the override it passes to
affineTextStyles, which clobbered the decoration computed from
strike/underline.
Removing it fixes the render; plain links still show no underline
because
affineTextStyles returns none by default.
**Result**
Strikethrough and underline render on links again. Added an e2e test: a
plain link
stays undecorated, a struck link renders line-through, red before the
fix and green
after.
fix#15106
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed link text-decoration styling to properly support strikethrough
and other text formatting when applied to links.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Close
[BS-3251](https://linear.app/affine-design/issue/BS-3251/正文的inline链接，chrome中，中键开新窗口的行为丢失了)
#### PR Dependency Tree
* **PR #12902** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Middle-clicking on links and references now opens them in a new
browser tab.
- Linux platform detection has been added for improved
environment-specific behavior.
- **Bug Fixes**
- Middle-click paste prevention is now limited to Linux environments
when the relevant setting is disabled and excludes clicks on links and
references.
- **Tests**
- Added end-to-end tests to verify that middle-clicking links opens them
in a new tab for external links, internal links, and reference
documents.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3291](https://linear.app/affine-design/issue/BS-3291/工具栏展开时报错，链接无法点击打开)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- URLs entered without a protocol (e.g., "github.com/...") are now automatically normalized to use "https://", ensuring links are secure and consistently formatted.
- **Bug Fixes**
- Improved handling and validation of links to prevent issues with missing or invalid protocols in bookmarks and inline links.
- Simplified URL validation logic by leveraging native URL parsing, removing complex regex and email-specific checks.
- Streamlined toolbar link actions to operate only on valid normalized URLs.
- Refined URL detection in markdown preprocessing to exclude lines containing spaces from being treated as URLs.
- **Tests**
- Added tests to verify that links without a protocol are correctly normalized and displayed across different views.
- Updated URL validation tests to better reflect valid and invalid URL formats, including IP addresses and domain variants.
- **Style**
- Updated snapshots to reflect the use of "https://" in links.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Juan Abimael Santos Castillo