Decision: Freeze production cutover scope to preservation-first

[alexeygrigorev]

Normative decision: Open decision 18

Decision needed

Confirm production cutover preserves URLs/content behavior first and excludes URL redesign or broad SEO enhancements; improvements follow measured parity in later releases.

Non-goals

Do not hide migration regressions inside simultaneous design, content, or metadata changes.

Acceptance criteria

• Owner accepts preservation-first scope and exception-approval mechanism.
• Change freeze distinguishes required compatibility fixes from enhancements.
• Rollback and monitoring thresholds are quantitative.
• Post-cutover improvement backlog can be evaluated independently.

Validation scenarios

Review the release diff/report and verify each changed URL, canonical, page meaning, analytics item, and metadata enhancement is either parity work or an explicit approved exception.

Dependencies

Blocks final cutover approval under #10.