feat(search): added default support and test

[Sakthieswaran-tech]

• Show default value when input is empty.
• Pressing Tab fills the prompt with default or selected choice.
• Added test to verify default display, prefill behavior, and correct selection.

[codecov]

Codecov Report

❌ Patch coverage is 86.36364% with 3 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@6963b18). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
packages/search/src/index.ts	86.36%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1915   +/-   ##
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  Coverage        ?   94.72%           
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  Files           ?       37           
  Lines           ?     1554           
  Branches        ?      461           
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  Hits            ?     1472           
  Misses          ?       80           
  Partials        ?        2           

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[SBoudrias]

It's a little weird the default value does nothing here.

Also, is this really a default value? Or a starting search string? Like here if we press enter, there's no valid value selected.

[Sakthieswaran-tech]

I think I missed one part of the flow.
When there's no search term, the first item gets auto-selected, but this conflicts with how defaultValue is expected to work—Enter should pick the default.

Could you clarify what the intended behavior should be here? That will help me proceed correctly.

[SBoudrias]

Yeah, I think there's 2 things:

1. We should select the default value on load
2. We should validate that the default value is valid and exists

[Sakthieswaran-tech]

I’ve updated the prompt so the default value is now selected on load and properly validated. Please have a look and let me know if any further changes are needed.