feat(react-ui): ambient loading state for AgentInterface + export DotMatrixLoader - #835
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…MatrixLoader Adds AmbientLoader, an AgentInterface-internal loading state: two blurred glow blobs drift and breathe behind the dot-matrix loader with a required contextual label (no surface can render a bare "Loading…"). Neutral themes render the glow as soft luminance depth; branded themes tint it through the accent token automatically. Freezes under prefers-reduced-motion. Wired into the one full-screen gap: opening a thread previously blanked the whole panel (visibility: hidden with nothing shown) while messages loaded — that state now shows the loader with "Loading conversation…". All existing DotMatrixLoader sites are untouched. DotMatrixLoader itself joins the package index so artifact renderers (composed by consumers) can build matching loading states instead of carrying ports of it. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XECS4NLhz6BNd1TUYbWjfu
ankit-thesys
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Jul 24, 2026
abhithesys
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Jul 24, 2026
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Part of the "loaders are just Loading…" cleanup across AgentInterface surfaces (the artifact-renderer side ships separately in the SDK repo).
What
AmbientLoader— an AgentInterface-internal loading state: two blurred glow blobs (blur(64px)) drift and breathe on opposing 7s/9.5s cycles behind the shared dot-matrix loader, with a required contextual label so no call site can render a bare "Loading…" again.prefers-reduced-motionfreezes the drift; the label is the singlerole="status"announcement (the inner matrix is aria-hidden).Wired into the one full-screen gap: opening a thread previously hid the entire panel (
visibility: hidden) with nothing shown while messages loaded. That state now renders the loader with "Loading conversation…" — sameisLoadingMessagesflag as the old hiding, so behavior parity is exact. The overlay covers only the thread panel; the sidebar stays interactive.DotMatrixLoaderjoins the package index — artifact renderers are composed by consumers, and their loading states should reuse this loader instead of carrying ports of it.Untouched: every existing DotMatrixLoader site (artifact view page, artifact browser, message loading) — they already do the right thing.
Test Plan
pnpm build+pnpm test(27/27) green; both new classes present indist/components/index.css;DotMatrixLoaderverified importable from the built index🤖 Generated with Claude Code
https://claude.ai/code/session_01XECS4NLhz6BNd1TUYbWjfu