Rich workspaces: move formatting bar in front of breadcrumbs

Is your feature request related to a problem? Please describe.
The rich workspaces feature adds a lot of unnecessary whitespace in the Files app as it reserves a vertical bar for formatting options – even if editing isn’t active or even if there is no readme at all.

If you enter the rich text area the whitespace is used to show the formatting bar. Which is again faded out if you exit text editing.

Describe the solution you'd like
As the formatting bar is only displayed if you actively click into the rich text area, I propose to move the formatting bar in front of folder breadcrumbs. Additionally a close button could be shown where the view switch is located.

If you exit the editing mode by clicking anywhere or using the close button, breadcrumbs are back there to navigate folders.

Describe alternatives you've considered
You can completely turn off rich workspaces but that strips the feature entirely not only the whitespace.

Quick mockups
Current:


Proposal:

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No files or tests are named; start by locating the rich workspaces formatting-bar and Files breadcrumbs entry points. Implement and verify the proposed UI flow: the formatting bar appears only while editing, the close control exits editing, and breadcrumbs return without reserving unnecessary whitespace.