fix(tree-view): nested folder children not stretching to full width

[braden-w]

The children container inside TreeViewFolder doesn't grow to fill available width, so any nested items (files or sub-folders) render at content width instead of stretching across the tree.

The folder's collapsible content uses a flex row with two children: a thin vertical guide line (w-px) and the children container (flex flex-col). Without flex-1, the children container only sizes to its content—meaning nested file items with w-full have no parent width to fill.

One-line change:

-<div class="flex flex-col">
+<div class="flex flex-1 flex-col">

Discovered while building a file explorer where nested files had noticeably shorter hover/selection highlights than their top-level siblings.

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Latest commit: 3981731

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Project	Deployment	Actions	Updated (UTC)
shadcn-svelte-extras	Ready	Preview, Comment	Mar 15, 2026 6:17pm

[ieedan]

Thank you!