Crossword Genius

House decoration is done, retiring shattered (8,6)

Ross

I believe the answer is:

interior design

I'm a little stuck... Click here to teach me more about this clue!

'house decoration' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'is done retiring shattered' is the wordplay.
'shattered' is an anagram indicator.
'is'+'done'+'retiring'='isdoneretiring'
'isdoneretiring' is an anagram of 'INTERIOR DESIGN'.

Can you help me to learn more?

(Other definitions for interior design that I've seen before include "Decoration and furnishings for rooms" , "Planning for home" .)

I've seen this clue in The Telegraph.
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