refactor: remove sidebar in favor of simple approach

[maxy-shpfy]

Description

Removed the sidebar provider and refactored the flow sidebar to use a simpler, more direct approach. The new implementation:

• Eliminates the complex sidebar context and provider system
• Replaces the multi-level sidebar components with a cleaner, more focused implementation
• Improves the sidebar UI with consistent styling and better component organization
• Extracts action buttons into separate components for better maintainability
• Maintains all existing functionality while reducing code complexity

Before	After

Type of Change

• Improvement
• Cleanup/Refactor

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Test Instructions

Screen Recording 2026-02-11 at 11.00.23 AM.mov (uploaded via Graphite)

1. Open the pipeline editor
2. Verify the sidebar displays correctly with all sections (Pipeline Actions, Runs & Submissions, Components)
3. Test all sidebar actions (save, save as, import, export)
4. Verify component search and drag-and-drop functionality works as expected
5. Check that the resize handle works properly

Note

I removed "collapse" feature for the left side bar, since I'm not yet convinced it is useful, but I plan to re-introduce it in a follow up PR to keep it focused.

[maxy-shpfy]

• feat: show tooltip only for truncated titles on componentitem #1789
• feat: tooltip on hover for componentitem #1788
• refactor: remove sidebar in favor of simple approach #1787 👈 (View in Graphite)
• feat: resizable left side bar #1786
• master

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[camielvs]

Nice. Great simplification and refactoring.

Only comment is that the new sidebar appears to be horizontally scrollable within its container (seemingly only when the component library is fully collapsed)

[maxy-shpfy]

@camielvs ^ fixed!

[maxy-shpfy]

Merge activity

• Feb 19, 6:45 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 19, 6:45 PM UTC: @maxy-shpfy merged this pull request with Graphite.