This is the separate material follow-up described in #3. It depends on #3 and is not ready to merge before that dependency is resolved.
Scope: 14 new material/revision/population files and one additive review-index entry. Existing main-branch review records are preserved. No existing task files, scoring regressions, repository tools, published editions or tags are changed. The cumulative new revision preserves #3's rules and changes only three normalized-text verification records: live-041-python-programming-language region 2, live-063-navigation-menu region 5, and live-069-navigation-menu region 5. Source text, ranges and scoring thresholds are unchanged.
The same 530 tasks are selected. Five new source manifests/catalogs bind external executable material packages; raw third-party captures and full reference answers are not uploaded. Obtain a permitted external copy separately; this PR does not provide a public source download service.
Local validation used the proposed combination…
