fix(workspace-cleanup): keep filter footer visible

src/renderer/src/components/workspace-cleanup/workspace-cleanup-filter-bar.test.tsx

@@ -46,15 +46,14 @@ describe('WorkspaceCleanupFilterBar', () => {
     expect(screen.queryByRole('button', { name: 'Scan' })).toBeNull()
   })
 
-  it('caps the facet panel height on the scroll viewport so it stays scrollable', () => {
+  it('keeps the footer visible while the facet panel scrolls', () => {
     renderFilterBar(true)
 
-    // Why: on the ScrollArea Root the cap only clips — the h-full viewport
-    // collapses under an indefinite height and the last facet groups become
-    // unreachable behind the footer.
-    const viewport = document.querySelector('[data-slot="scroll-area-viewport"]')
+    const content = document.querySelector('[data-slot="popover-content"]')
     const root = document.querySelector('[data-slot="scroll-area"]')
-    expect(viewport?.className).toContain('max-h-[420px]')
-    expect(root?.className).not.toContain('max-h-')
+    expect(content?.className).toContain(
+      'h-[min(471px,var(--radix-popover-content-available-height))]'
+    )
+    expect(root?.className).toContain('min-h-0 flex-1')
   })
 })

src/renderer/src/components/workspace-cleanup/workspace-cleanup-filter-bar.tsx

@@ -67,12 +67,13 @@ export function WorkspaceCleanupFilterBar({
             ) : null}
           </Button>
         </PopoverTrigger>
-        <PopoverContent align="end" sideOffset={6} className="w-[320px] p-0">
-          {/* Why: the cap must sit on the scroll viewport. On the Root it only
-              clips — the viewport is h-full, which collapses to auto under an
-              indefinite height, so the panel grew past the cap unscrollably and
-              hid the last facet groups behind the footer. */}
-          <ScrollArea viewportClassName="max-h-[420px]">
+        <PopoverContent
+          align="end"
+          sideOffset={6}
+          className="flex h-[min(471px,var(--radix-popover-content-available-height))] w-[320px] flex-col p-0"
+        >
+          {/* 471px preserves the 420px facet viewport plus the fixed footer at full height. */}
+          <ScrollArea className="min-h-0 flex-1">
             <WorkspaceCleanupLifecycleFacets {...facetProps} />
             <WorkspaceCleanupGitReviewFacets {...facetProps} />
           </ScrollArea>