* 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
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