* refactor: SearchBar and Nav components to streamline search functionality and improve state management
* refactor: remove refresh conversations
* chore: update useNewConvo calls to remove hardcoded default index
* refactor: null check for submission in useSSE hook
* refactor: remove useConversation hook and update useSearch to utilize useNewConvo
* refactor: remove conversation and banner store files; consolidate state management into misc; improve typing of families and add messagesSiblingIdxFamily
* refactor: more effectively clear all user/convo state without side effects on logout/delete user
* refactor: replace useParams with useLocation in SearchBar to correctly load conversation
* refactor: update SearchButtons to use button element and improve conversation ID handling
* refactor: use named function for `newConversation` for better call stack tracing
* refactor: enhance TermsAndConditionsModal to support array content and improve type definitions for terms of service
* refactor: add SetConvoProvider and message invalidation when navigating from search results to prevent initial route rendering edge cases
* refactor: rename getLocalStorageItems to localStorage and update imports for consistency
* refactor: move clearLocalStorage function to utils and simplify localStorage clearing logic
* refactor: migrate authentication mutations to a dedicated Auth data provider and update related tests
* refactor(Nav): delegate Search-specific variables/hooks to SearchContext
* fix: safely determine firstTodayConvoId if convo is undefined
* chore: remove empty line
* feat: initial render of search messages
* feat: SearchButtons
* update Ko.ts
* update localizations with new key phrases
* chore: localization comparisons
* fix: clear conversation state on searchQuery navigation
* style: search messages view styling
* refactor(Convo): consolidate logic to navigateWithLastTools from useNavigateToConvo
* fix(SearchButtons): styling and correct navigation logic
* fix(SearchBar): invalidate all message queries and invoke `clearText` if onChange value is empty
* refactor(NewChat): consolidate new chat button logic to NewChatButtonIcon
* chore: localizations for Nav date groups
* chore: update comparisons
* fix: early return from sendRequest to avoid quick searchQuery reset
* style: Link Icon
* chore: bump tiktoken, use o200k_base for gpt-4o
