feat: add chat search implementation

[tobiasbueschel]

This PR implements the ability to search chats, inspired by how it works in the ChatGPT user interface.

• Supports keyboard shortcuts CMD + K or CTRL + K to open search dialog depending on the operating system used
• Shows a preview of the search results by matching any message titles or content
• Allows users to quickly create a new chat from the search dialog

https://github.com/user-attachments/assets/cf4214e2-58ec-4038-9d1f-35131b9a4f14

Potential future improvements:

• support semantic search / fuzzy search or even something like LLM-powered search
• better support for searching through tool call results & generating a preview instead of saying "No preview available"
• removing markdown formatting in search preview so that we can use bold text to highlight the matched search query in the preview
• adding test cases (Shall I add test cases for e.g., the utils, the chat-search.tsx component to the tests/ folder?)
• if a search result is found opening it could auto-scroll to the message the user was searching for and highlight the matched search term in the message for a few seconds
• search filtering similar to how it works in GitHub e.g.,:
  • searching for particular artifact types => artifact:sheet or artifact:text
  • searching for public chats => visibility:public

@jeremyphilemon & @jaredpalmer: please let me know what else you'd like me to add / change in this PR 🙏

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Package	New capabilities	Transitives	Size	Publisher
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[solomonshalom]

This is pretty cool

+1

[tobiasbueschel]

Hi @jeremyphilemon 👋 happy Tuesday - I've fixed up any recent merge conflicts. Let me know if there's any other change you'd like me to make? Thanks!

[tobiasbueschel]

Hi @jeremyphilemon & @dancer what do you think about this PR? Wanted to follow up to see if this is something you'd like to bring in? :)

[nwp]

This seems like a nice feature that has been thoughtfully implemented.