Media Tools: A Few Refinements

A handful of small improvements across the media tools:

• Find Images has select-all and clear toggles per product row and across the whole review, with a live count of how many images are selected. Every candidate tile shows a keyboard focus outline as you tab through the grid.
• The Associated Products search inside the image editor now floats above the page, so the whole match list stays inside the viewport instead of being clipped by the sidebar.
• In the image editor, Save and Cancel stay pinned to the top of the panel as you scroll, and Archive sits below a divider at the end of the panel and says why it is disabled when it is.