<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Chores**
* Updated React Router packages to v7.17.0 for improved routing
stability.
* Adjusted workspace dependency governance and overrides for more
consistent installs.
* Removed an obsolete PostCSS re-export.
* **New Features**
* Integrated Tailwind into the build pipeline to enable utility-first
styling.
* **Style**
* Added global base styles to standardize border color across UI
elements.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
This PR migrates all tailwind configs in the apps to be CSS configs.
They import a shared CSS Tailwind config from the `config` package
(which in turns imports the old JS config).
The shared JS config will be migrated to CSS in a followup PR.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Chores**
* Centralized Tailwind into a config-driven entrypoint and updated the
app build flow to use the new build step; many apps now import unified
global styles.
* **Style**
* Migrated global styles to a Tailwind v4-style setup, added
project-wide content scanning, consolidated theme imports, standardized
theme tokens (including new --container-site max-width), and added a
small prose utility to remove paragraph margins.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Ivan Vasilov