Responsive surface matrix — 2026-07-17

The final hidden-renderer smoke gate inventories every registered repository page, preferences page, repository-settings page, clone tab, notification tab, File History tab, and safely orchestrated dialog surface.

• 79 catalog rows accounted for: 76 passed and 3 conditional integrations were not applicable.
• Zero failed, blocked, or missing rows. Every passing row contains all eight scenario receipts and a short-height screenshot.
• Eight scenarios per applicable surface: 1000×687, 640×480, 480×640, 960×420, and 1600×900 at 100%; 1000×687 at 125% and 150%; and 640×480 at 200% (320×240 CSS pixels).
• The gate checks document/body width containment, every user-owned vertical scroll region reaching its exact bottom, reachable final actions, dialog form/footer containment, unnamed buttons, and decorative overlay isolation.
• The three explicit N/A rows are Copilot models, Copilot providers, and repository fork settings, which the deterministic local fixture does not expose.

The complete machine-readable ledger is responsive-surface-matrix-2026-07-17.json, SHA-256 108c4c444feda61bb890d341cc83fb5bc27c008695fe9f384114d6499ed9532b.