Steer a running turn, design systems rebuilt from your sources, and 3D product shots

Steer a running turn. While a turn runs, the composer offers Continue and Steer. Continue queues a follow-up as before; Steer checkpoints the running task and resumes it with your instruction — completed work is kept and the new instruction applies to what's left. Queued messages are editable in place (click one to edit, ⌘⏎/Ctrl↵ saves, Esc cancels), each keeps its own attachments, and *Steer now* on a queued message applies it immediately instead of waiting for the turn to end.

Sent attachments preview in place. A filename chip on a sent message is now clickable — images open in a dialog inside the studio, and any file offers *Open in default app*. Attachment chips on conversations saved before this release work the same way.

Design-system packages travel whole. *Save as design system* and *Import design system…* (renamed — Claude Design exports still import) now carry the complete design-system.json package: components, documentation, fonts, exports, reports and assets, not just tokens and rules. Applying a system installs all of it and records the package's version on the project.

Motion presets for 3D scenes. Select objects in the scene editor and open *Motion presets*: turntable, explode, float and breathe compile into ordinary editable tracks — previewed on the timeline first, committed only when you apply. Duration, delay, stagger and its order, axis, amount, hold, easing and seed are stored as a recipe on the document, so a preset regenerates after the scene changes — and regenerating refuses to overwrite tracks you've edited until you detach the recipe.

Product-shot staging in one action. *Frame and light selection* creates an authored camera plus a studio three-point, soft overcast, low-key or silhouette lighting rig at 16:9, 1:1 or 9:16. *Camera orbit* and *Camera push* add the move as an editable clip; framing protects a bounding sphere over the sampled motion so the subject stays in shot.

Product card compositions. With an authored camera active, *Product card* renders a finished card — the live scene plus a fitted title/subtitle, a callout pinned to an object, and optional PNG/JPEG/SVG artwork — to PNG, a PNG sequence or MP4 (using your local ffmpeg), under exports/composition-* with a manifest of hashes and findings. Reduced motion freezes entrances instead of playing them.

Beat markers and loop control on the timeline. *Mark playhead* stores a named beat on the clip and clicking one jumps the playhead to it; a Loop checkbox controls whether preview playback wraps.

Import native motion. A baked motion JSON — for instance the output of the kit's rigid-animation compiler — merges into the scene as a single undoable transaction with fresh object and track identities; the performance, seed and provenance ride along.

GLB exports carry a capability manifest. Next to scene-<rev>.glb, a .manifest.json records the document hash, backend and assets, runs the motion checks, and states which animated channels the export delivered — including the material, light and camera property tracks the format omitted.

Video exports say how repeatable they are. The manifest labels each export deterministic-seek or real-time-fallback, so what a re-export will do is visible before you trust the frames.