Vorker handles the work around your manuals: chapter structures, terminology lists, quotes, delivery emails, invoices and revision offers. You approve everything.

No. Every quote, delivery email, invoice and revision offer is drafted and then waits for you. You can read it, edit it, reject it, or approve it. Even the offer that drafts itself from a changelog sits until you press send.
The structure and the admin, yes. The writing judgement, what an operator needs to read and in what order it lands, stays yours, unless you explicitly hand it a chapter to work on. It never drafts your client work uninvited.
Yes. Every naming decision you make is filed against the project, so when you ask what the feed hopper was called in the last manual, the answer is there. It flags the open calls in the document plan instead of deciding them for you.
Your source material stays in your own accounts and storage, and nothing leaves without your approval. Vorker works inside the tools you already trust with client documents rather than becoming a new copy of them.
Solo technical writers get the most out of it, because there is no documentation manager to hand the structure and the quoting to. Vorker is built for practices of one to five people, not for departments with a tools team.
No. You type or say it, the way you would brief a documentation manager, and it works inside your email, files and accounting. Quotes and invoices arrive as ordinary PDFs on your paper.