* docs: add language support tags to pages
- replace img.shield tags
- add language support tags where missing
* update Agents page with general tags
* update language and version tagging
- response to review comments
- rename css styles to avoid style name conflicts
* add tags to api-server page
* fix: update gemini 2.0 flash to latest model id for Live API
* fix: use -flash for most pages instead of the live api model
* fix: wording andformatting
* fix: resolve merge conflict