Summary

• Add editable cursor-motion choreography with straight, arc, wave, loop, and overshoot presets, easing, cycle controls, and per-section speed.
• Turn the recorded cursor trace into independent motion sections at every recorded click and every detected cursor rest (300 ms or longer).
• Preserve rest sections as still holds by default instead of forcing one continuous animated path.
• Let editors auto-split an existing cursor-motion section at its recorded rests/clicks or manually split it at the playhead.
• Add 1x-4x motion-speed controls (0.1 steps and quick presets), with new sections defaulting to 2x while still landing on the recorded click at the original time.
• Add previous/next section navigation, visible speed labels on the timeline, and one-click application of the selected preset/speed/timing to every move section.
• Show distinct rest, click, and manual anchors together with the original recorded trajectory in the on-canvas edit mode.
• Integrate cursor motion with timeline selection, undo/redo, project persistence, MP4 export, and GIF export.

Why

The existing cursor renderer can smooth a recorded trace, but it cannot art-direct the movement between meaningful actions. A single continuous replacement path is also too coarse: pauses and clicks need to remain separate so each move can receive its own preset without making the cursor drift during an intended stop. Once split, those sections also need fast navigation and batch styling rather than repetitive per-item setup.

User impact

Editors place the playhead before recorded cursor activity and use the cursor-motion action. OpenScreen builds separate timeline items for moves and holds through the subsequent recorded clicks. Each item can be selected, styled, and sped up independently. Existing one-piece regions can be auto-split, and any selected item can be split manually at the playhead.

Increasing speed compresses motion into the end of the section, so the cursor waits longer at its source and still reaches the recorded click at exactly the original timestamp. Editors can then copy the chosen preset, speed, turns, and easing to all move sections without copying path-specific control handles.

The motion data uses normalized capture coordinates, so the editor representation is independent of Windows DPI and monitor layout. Preview and export share the same trajectory evaluator. Telemetry gaps (for example, when the cursor leaves the captured display) are not treated as false rests.

Validation

• Full test suite: 429/429 passing on the feature branch.
• Focused cursor-motion and persistence tests: 38/38 passing.
• npx tsc --noEmit.
• npm run build-vite.
• UTF-8 JSON parsing for every shipped locale's changed settings/timeline resources.
• Biome checks on all changed source files.

Notes

• Automatic choreography requires recorded cursor telemetry and at least one later real click.
• The first generated action and every detected move/hold are separate undoable timeline regions; generation itself remains one undo checkpoint.
• Repository-wide lint still reports pre-existing unrelated locale/CRLF drift. The new cursor-motion keys are present in every shipped locale.