Bring Back near-infinite current doc readback for the models that can handle it

My longer novel books pipeline has been quashed by the recent continuity upgrade... Essentially - I can't get beyond 40k in a doc on Excellent or Sonnet 3.7 anymore - and I was regularly getting 60k-100k in one pass without any hick-ups except for Claude issues on the backend - but, I'd just restart and they'd continue and finish... So. The problem is we now have a hard 20k limit on the current doc readback - even on Excellent and Sonnet 3.7 which could handle a higher limit fine.

How does this interrupt my process? Essentially - both quit working around around scene 6 reliably - then I can restart them and they go until ~40k. Then I can't restart them - they never get to the thinking or writing phase.

One work around is to split the file from 40k down to 20k in continuity and 20k in readback - and that is good for another 20k.

But, again, beyond that and it won't write. And, I could be summarizing each chapter and reducing it to fit - but I know it can work fine without this labour intensive step AND I don't think I get better prose this way.

My dream come true? Give me some way to get Sonnet 3.7 thinking with the unlimited by SW readback (and the continuity, but I could live without the continuity).

Pretty Please?

Yes, I could vibe code this myself - but I'd rather stay within the SW ecosystem.

I have a little bit of an update to this…

Essentially - I can get to 90k as long as the model holds out and doesn’t crash.
Getting restarted is the kicker.
I recently kicked off a 32 chapter (scenes) book in sonnet 3.7.
The model died at 30k.
I split it and put 20k into a first doc and 10k into the second doc that I then continued.
Second doc made it to the end of the book - 70k in the second doc - 90k in total.

You can see why this is frustrating.
As long as the model holds out, I end up with a pretty coherent draft.

If the model crashes and burns, I have to figure out how to restart with as much info as i can give it…
If I’m over 40k in, it will be harder to set it up for success.