List: Clear all + Customize buttons should live on the filter row, always last (and Clear all hides when no filter is active)

[MartinCastroAlvarez]

Problem

On the changelist, Clear all and Customize currently render on the row below the filter chips, leaving the filter row visually unbalanced and the two utility buttons disconnected from the controls they act on.

Expected

Clear all and Customize should sit on the same line as the filters, as the last two buttons of that row (in this order: …filter chips… | Clear all | Customize).

Additionally:

• Clear all hides when no filter is currently selected (nothing to clear → no button).
• Customize stays visible at all times — it's the column-customizer affordance, independent of the filter state.

Why

Keeps the filter row self-contained (one visual unit), avoids a second toolbar row, and removes the dangling Clear all button when there's nothing to clear (no-redundant-chrome).

Acceptance

• With ≥1 active filter: filter chips on one row, ending with Clear all then Customize as the last two buttons.
• With no active filter: same row, ending with just Customize.
• No regression in mobile / narrow-viewport wrap behaviour.

[MartinCastroAlvarez]

Re-opening — laminr pilot is still seeing this on react 1.0.0. Tracking as pending work the agent can pick up.

[MartinCastroAlvarez]

Verified still broken in django-admin-react 1.0.0 on the laminr /admin2/ pilot. The Customize button still renders on its own line below the filter row, not at the end of it. Clear all correctly hides when no filter is active. Needs the layout fix to actually land in a 1.0.x release.

[MartinCastroAlvarez]

Further clarification (laminr /admin2/ pilot):

Customize is currently rendered on the same row as the filters BUT visually separated from them (pushed to the right edge with ml-auto / justify-content: space-between). That's still wrong.

Spec: Customize must be part of the same button group as the filter chips — same toolbar / button bar — sitting immediately after the last filter chip with the same spacing as between filter chips. No ml-auto, no right-aligned floating, no separator. The order on a row with one active filter:

[ filter1 ] [ filter2 ] … [ Clear all ] [ Customize ]

…all glued together as one button group, left-aligned (or wrapping naturally), Customize always the last element, Clear all the second-to-last when present (hidden otherwise).

[MartinCastroAlvarez]

Already shipped — merged in PR #558 (commit b592c1f): Customize now lives on the filter row right after Clear all, and Clear all hides when no filter is active. Verified in v1.0.0 (live on PyPI).