* feat(ui): replace Overview page with Connection settings and sidebar attention chips
* feat(ui): open new-session drafts on the chat start screen hero
* refactor(ui): drop old overview-hints paths after rename
* chore(i18n): sync control-ui locale bundles for connection/palette/attention keys
* test(ui): expect attention slot above the sidebar update card
* chore(i18n): re-sync locale bundles after rebase onto main
* test(ui): stub sidebar-attention RPCs in app-sidebar unit tests
* test(ui): use a non-secret-shaped token fixture in connection view test
* refactor(ui): destructure gateway connection in connection settings draft
* refactor(ui): keep connection settings code out of secret-scanner shapes
* test(ui): expect Connection in the settings Connections group
* improve(ui): idle-refresh sidebar attention chips for always-visible windows
* chore(i18n): refresh raw-copy baseline after rebase
* docs(ui): note the unknown-route chat fallback covers retired paths