The Leanpub story, the title, and the determinism boundary

Answers three things at once and adds a concept. The Leanpub story the agent asked for turns out sharper than expected: the earlier workflow was already good — markdown, GitHub, reuse of his own blogs — and what failed was not the writing but everything after it, because “you almost start to be locked by the first version of the content, because making changes becomes quite painful”. The title is decided: Creating a Book Using Agentic Workflows. Restructure before publishing. And the concept the founder says he has not explained well — source materials versus projections of them, two-way doors against one-way ones, prose being a one-way door because a model wrote it, and the rule that follows: keep the sources in the deterministic layer so the outputs can be destroyed and rebuilt without losing the core.