feat(tabs): implement synchronized tabs switching (#700)

* Sync tabs across groups

* feat(tabs): add optional synchronization

* Move tabs sync setting under page params

* fix: spacing between title and site title (#704)

* docs: document configure opengraph image (#706)

* [Docs] document using og:image

* Make example title page match others

* clarify wording

* chore: update tailwind css to latest version 4.1.8 (#703)

* fix: wrong SRI hash for katex.css (#702)

* Correct URL given in 'dev.toml'

* stylesheet 'katex.css': fix SRI hash

* fix(build): run npm update to fix postcss complaint

* feat(tags): improve usability of tags (#698)

* feat(tags): improve usability of tags

* Tags can be shown also at docs
* Documented tag-related config flags
* Added example tags to the site
* Made rendered tags active

* Move tags listing to ToC

* Hide tags section on no tags

* feat(math): add optional MathJax support (#707)

* feat: add MathJax option

* docs: move math engine note

* refactor: update LaTeX documentation and improve MathJax integration

- Adjusted LaTeX documentation for clarity and formatting.
- Enhanced MathJax configuration in the templates to support both KaTeX and MathJax rendering.
- Removed deprecated comments and streamlined the script loading process for MathJax.
- Updated the passthrough extension settings in the Hugo configuration for better compatibility with LaTeX math expressions.

* docs: simplify LaTeX documentation and clarify configuration steps

- Updated LaTeX documentation to reflect that KaTeX is enabled by default, removing the need for manual activation.
- Added examples for using LaTeX math expressions and clarified the configuration for the passthrough extension in Hugo.
- Enhanced MathJax section to emphasize its use as an alternative rendering engine.

* fix(tabs): add null check for panels container and update example items

* fix(tabs): improve tab group key handling and add validation for items parameter

* refactor(tabs): comment out sync option in configuration and adjust tab formatting in documentation

---------

Co-authored-by: hobobandy <30026704+hobobandy@users.noreply.github.com>
Co-authored-by: Matt Dodson <47385188+MattDodsonEnglish@users.noreply.github.com>
Co-authored-by: Andreas Deininger <adeininger@urbanonline.de>
Co-authored-by: yuri <1969yuri1969@gmail.com>

exampleSite/content/docs/guide/shortcodes/tabs.md

@@ -5,11 +5,11 @@ next: /docs/guide/deploy-site
 
 ## Example
 
-{{< tabs items="JSON,YAML,TOML" >}}
+{{< tabs items="macOS,Linux,Windows" >}}
 
-{{< tab >}}**JSON**: JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax.{{< /tab >}}
-{{< tab >}}**YAML**: YAML is a human-readable data serialization language.{{< /tab >}}
-{{< tab >}}**TOML**: TOML aims to be a minimal configuration file format that's easy to read due to obvious semantics.{{< /tab >}}
+  {{< tab >}}**macOS**: A desktop operating system by Apple.{{< /tab >}}
+  {{< tab >}}**Linux**: An open-source operating system.{{< /tab >}}
+  {{< tab >}}**Windows**: A desktop operating system by Microsoft.{{< /tab >}}
 
 {{< /tabs >}}
 
@@ -91,3 +91,35 @@ Markdown syntax including code block is also supported:
   {{< /tab >}}
 
 {{< /tabs >}}
+
+
+### Sync Tabs
+
+Tabs with the same list of `items` can be synchronized. When enabled, selecting a tab updates all other tabs with the same `items` and remembers the selection across pages.
+
+Enable globally in your `hugo.yaml` under the `page` section:
+
+```yaml {filename="hugo.yaml"}
+params:
+  page:
+    tabs:
+      sync: true
+```
+
+With this enabled the following two tab blocks will always display the same selected item:
+
+```markdown
+{{</* tabs items="A,B" */>}}
+
+  {{</* tab */>}}A content{{</* /tab */>}}
+  {{</* tab */>}}B content{{</* /tab */>}}
+
+{{</* /tabs */>}}
+
+{{</* tabs items="A,B" */>}}
+
+  {{</* tab */>}}Second A content{{</* /tab */>}}
+  {{</* tab */>}}Second B content{{</* /tab */>}}
+
+{{</* /tabs */>}}
+```