[TASK][PROGRAMME.T10] Review this task register and stage later GitHub updates

Parent: #1

Task ID: `PROGRAMME.T10`

## Proposed implementation
Review stable task IDs, assumptions, dependencies and acceptance evidence; record approve/revise/split/defer decisions. Later re-read live issues and stage only approved implementation work.

## Done when
The reviewed change set is idempotent, preserves existing edits and has explicit mutation scope.

## Guardrail
This issue only defines review/planning. It does not authorize implementation, PRs or code changes.

## Prerequisites
`PROGRAMME.T01`, `PROGRAMME.T05`, `PROGRAMME.T06`

Review: pending · Implementation: not started.

Start with parent issue #1 and the prerequisite tasks PROGRAMME.T01, PROGRAMME.T05, and PROGRAMME.T06 to understand the task register, assumptions, dependencies, and acceptance evidence. Review the live issues and document approve, revise, split, or defer decisions; done means the approved change set is idempotent, preserves existing edits, and has explicit mutation scope.

Written by the indexing model from the issue text.