Follow-up polish to #1, verified against the running dev server (DOM + injected CSS + Playwright screenshots).
- CSS fix: crosswind doesn't scan class names that live only in inline
<script>string literals, so the dynamically-applied utilities (provider toggles, connection summary, accounts status pills, and the pre-existing active-post highlight border) produced no CSS rules. Added small hidden safelist elements so the scanner emits them. Confirmed the previously-missing classes now appear in the injected<style>. - New thread posts now inherit the active character limit.
- The empty crosspost-target state links to Accounts.
- Accounts intro copy now mentions Instagram.