[rwetz]

First pass at bringing the ML Lab closer to Epoch's look and feel.

Components and colour

• 29 hand-rolled buttons now use <Button>. The hero actions (Train model, Train again, Create, download the engine) use the brand variant; the rest use default or outline.
• Stock emerald/amber/sky/red become success/warning/info/destructive, so they follow all 22 themes. Those tones are ported into globals.css from @nexis/design, where they are the theme's ANSI green, yellow and blue.
• The ▶ and ⤓ glyphs and the "+" in "+ New" are now <Icon>s.

Motion (all off under reduced motion)

• The panel body plays the view entrance when its phase changes: no folder, setup, detecting, ready.
• Charts fade in when the run in view changes, never while live data streams.
• The setup and create cards rise in (nexis-scene-enter).
• A live run gets the slow accent scan (nexis-run-live); a finished result lands once (nexis-result-arrival).
• The indeterminate progress bar sweeps (nexis-shimmer) instead of animate-pulse.
• globals.css gains the app-shell, view and content entrances, kept in step with Upstream Epoch's shell entrances and docking theme nexis-design#5. @nexis/design is pinned to 0faf638.

Checks

• tsc --noEmit passes, and the ML Lab and style tests pass (234/234).
• In a browser, the first screen renders with the view entrance, the shared button and the theme --success.
• Not checked: the setup, training and result states. Nexis doesn't run past its first screen outside Tauri, so these need checking in a CI build.

Not included: pnpm install added a placeholder allowBuilds entry for the embedded Epoch package to pnpm-workspace.yaml. I left it out because it's an approval decision for you. Nexis still pins Epoch at e03b852; bump it after rwetz/nexis-epoch's design-epoch-look merges.

Before merging: merge rwetz/nexis-design#5, then re-pin to its merge commit on main.

🤖 Generated with Claude Code

[github-actions]

React Doctor found no new issues. 🎉

_{Reviewed by React Doctor for commit ddf8c9c.}