Retain page identities and publish the new space with section navigation in one transaction. Cover empty and duplicate Unicode titles, native edits and Rust follow-ups, 521-page checkpoint/counter stress, historical asset preservation, and interrupted publication.

Validation: 137 core, 99 offline and 150 Python tests; 29,328 ASan executions; workspace Clippy/formatting; both iOS targets compile. Five native clones removed. Acceptance: evidence/m10/PAGE-CREATION.md.

Assisted-by: gpt-6-astra