Pipeline search

[Mbeaulne]

Add search support to Pipelines page

Summary

Added a filter bar to the Pipelines page with:

• Search (matches name, description, author, notes)
• Date range filtering (last edited)
• Sort by name or date (asc/desc)
• Advanced filter: search by component name/URL within a pipeline

What's out of scope

The current search filters the local list of pipelines already loaded in memory.

• Persist search query in the URL as a query parameter (e.g., ?q=my-pipeline) so state is shareable and survives navigation
• Debounce the search input to avoid excessive re-renders on large lists
• Add search result highlighting to matched text in the table rows
• Add keyboard shortcut (e.g., / or Cmd+K) to focus the search input
• Consider server-side / indexed search when the pipeline list grows large

Context

The filter bar lives in PipelineFiltersBar.tsx and the filtering logic is in the usePipelineFilters hook. Search currently runs client-side against pipeline name, description, author, and notes fields.