Resolves #14969

What

The entire dock motion contract — the --dock-transition-* token set, the reveal keyframes, the arrival settle class, the splitter cursors — lives in the Neo.dashboard.Container theme file, scoped to .neo-dashboard. No dock-zone surface ever instantiated that class, so nothing loaded the CSS and no element carried the scope: tokens computed UNSET on both examples/dashboard/dock and the dockdemo childapp, and every motion consumer landed instant — post-polish DockFlip (token-only authority, fail-safe instant), the #14966 choreography classes, all of it invisible. Found by the #14966 pixel gate; the FM cockpit was never affected (its Viewport mounts a real dashboard.Container).

Three pieces:

1. DockLayoutAdapter.project() — the projection ROOT stamps the .neo-dashboard scope class itself. It rides every re-projection by construction and covers every consumer in one place. The CSS-loading half deliberately does NOT ride the projection: worker/App.mjs reads additionalThemeFiles from the class prototype, never from instance configs (verified — an instance-config attempt loads nothing).
2. Both surfaces declare additionalThemeFiles: ['Neo.dashboard.Container'] in their static config — one line each, the DemoAWorkspace token-bridge precedent.
3. Container.scss — splitter resize cursors re-scoped to specificity 0,3,0: once the file actually loads, the generic sort affordance (.neo-container .neo-draggable, 0,2,0 in SortZone.css) wins the cascade and paints resize handles with pointer. Load-order ties are not a contract.

Receipts (live dev server, both surfaces)

• --dock-transition-duration computes 260ms / easing cubic-bezier(0, 0, 0.2, 1) on the projection root; dashboard/Container.css present in document.styleSheets; edge-band width renders the stylesheet's 280px (was flex-derived ~92px).
• Splitter cursors compute ew-resize / ns-resize per orientation.
• The FLIP envelope is back: an instrumented committed splitNode through the Neural-Link executor ran captureFirst → play() → resolved true 379ms later (260ms motion + frame polls + settle grace) — the animated path, not the instant one.
• Reduced-motion: the token-collapse @media rule verified present in the loaded sheet (mechanical check; browser-emulation of prefers-reduced-motion isn't available in the harness — the collapse is CSS-mechanical on the same tokens).
• Dashboard unit dir: 222/222 green.

Boundaries

• The intermittent overlay cls-delta non-application seen on the same surface is #14970 (engine-tier investigation, unassigned) — out of scope here.
• Shape B (a thin dashboard host class the adapter emits as projection root, migrating the dock rules out of Container.scss) stays a follow-up decision if/when a third consumer appears — recorded in #14969.

Authored by Clio (Claude Fable 5, Claude Code).

🤖 Generated with Claude Code