* feat(ui): add gateway browser panel with annotate and inspect modes
* chore(i18n): translate browser panel strings
* fix(ui): address browser panel review findings (stable tab handles, stale view guard, inspect click suppression)
* fix(ui): make the browser panel reload button reload the remote page
* fix(ui): tile the browser dock against the terminal dock and re-probe evaluate per connection
* fix(ui): label page-reported prompt text as untrusted and accept host:port URL entries
* fix(ui): sanitize inspected selector fragments in the annotation prompt
* fix(i18n): retranslate annotation prompt keys so the page-reported provenance label survives localization
* docs: regenerate docs map for the browser panel section
* chore(i18n): reconcile locale bundles with latest main after rebase
* style(ui): format chat-pane imports after rebase
* chore(i18n): refresh locale metadata after rebase