What does “lived citizenship” mean?

Let's take the phrase apart.

“Lived”

Lived means:

as actually experienced in people's lives, rather than merely as formally defined by law.

For example:

The law may say:

“You have the right to vote.”

That is a legal entitlement.

But lived citizenship asks:

Can you actually exercise that right?

Are you able to participate politically?

Are you treated as a legitimate political participant?

So lived does not mean “imaginary” or “subjective.”

It means:

the actual experience and practical condition of being a citizen.

“Citizenship”

Citizenship means membership in a political community together with the rights, duties, status, and participation associated with that membership.

“How citizenship actually exists”

This simply means:

what citizenship amounts to in people's actual social, political, and economic circumstances.

For example:

Two people might both legally be citizens.

But if one is socially treated as an inferior person, has little political influence, and lacks meaningful economic opportunities, their lived citizenship may differ substantially from that of the other citizen.

Social life

How people are treated and recognized in society.

Political life

Their ability to participate in political institutions and exercise political rights.

Economic life

Their ability to obtain work, property, resources, and economic independence.

So:

Lived citizenship is the practical social, political, and economic experience of citizenship.