The verification gate found that Task 04's core deliverable was never
implemented: Player and Search pages are not routed through <YaziPaneRow>,
so Player renders a single full-width column and Search's three columns
sit at equal thirds (31/32/31) instead of the target 1:3:3 ratio
(~14/43/43).
- Mark task 07 status BLOCKED with a pointer to the blocker evidence
- Add 07-blocker-task-04-player-search.md documenting the missing
implementation, evidence (player/search harness frames), failing exit
criteria, and a fix plan for the task 04 do-over
