Replace the legacy folder + welcome routes with a unified /workspace route
that hosts all folders, conversations, tabs, and terminals in one window.
- Persist opened tabs to the database (opened_tabs entity + migration)
so tab layout survives restarts and deep-link bootstrap restores state
- Replace FolderContext shim with AppWorkspaceProvider, ActiveFolderProvider,
and TabProvider; expose both opened (folders) and full DB (allFolders)
listings via list_all_folder_details
- Return conversations across all non-deleted folders from list_all when
no folder filter is given, so the sidebar can show every folder's history
- Add ConversationContextBar above the chat input with folder picker
(auto-opens unopened folders on select), branch picker, and commit /
push / merge / stash entries to restore BranchDropdown functionality
- Rework sidebar with stats header, search, flat / folder-grouped view
modes (localStorage-persisted), reveal-in-sidebar event subscriber,
and per-folder context menu (focus, close tabs, remove from workspace);
indent conversations under folder headers in grouped mode
- Gate terminal creation on active folder and show folder context
- Remove deprecated BranchDropdown, FolderNameDropdown, welcome route,
and per-folder window commands
- Localize all new strings across 10 locales
