apps/web/src/components/AppSidebarLayout.tsx                |  10 +-
 apps/web/src/components/SidebarStageBackdrop.test.tsx       |  33 ++++++
 apps/web/src/components/SidebarStageBackdrop.tsx            | 127 ++++++++++++++++-------
 apps/web/src/components/chat/ComposerPrimaryActions.test.ts |  59 ++++++++++-
 apps/web/src/components/chat/ComposerPrimaryActions.tsx     |  17 +++-
 apps/web/src/components/settings/ThemeEditorPanel.tsx       |  42 +-------
 apps/web/src/components/sidebar/SidebarChrome.tsx           |   4 +-
 apps/web/src/hooks/useSettings.ts                           |   8 +-
 apps/web/src/index.css                                      | 173 ++++++++++++++++++++++++++++++--
 apps/web/src/themePalette.test.ts                           |  31 +++---
 apps/web/src/themePalette.ts                                |  30 ++++--
 docs/user/thread-sidebar.md                                 |   7 ++
 12 files changed, 416 insertions(+), 125 deletions(-)