🎨 Palette: Enhanced search experience in list views

[Woschj]

This enhancement focuses on improving the search experience across all list views (Tools, Consumables, Workers).

Key changes:

1. Modernized UI: Updated the search input to use the join class, providing a more cohesive look with the search icon.
2. Clear Search: Added an absolute-positioned 'X' button inside the search field that appears when text is entered, allowing for instant clearing and refocusing of the input.
3. Visual Feedback: Introduced a dedicated noResultsRow that appears when a search query yields no matches, replacing the confusing blank state with helpful guidance.
4. Accessibility: Added aria-label and title to the new clear button and ensured focus management.
5. Reliability: Switched from Tailwind's .hidden class to inline display: none for JavaScript-driven visibility toggles to ensure consistent behavior across all environments.

These changes make the interface more intuitive and responsive to user input.

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PR created automatically by Jules for task 7077879794225002487 started by @Woschj

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