Scene view, texture tab and graph called state.preview() on every pointer move. Each call rebuilds panels, the editor run and generated images, so a drag in a busy project cost up to 34 ms per move. The model is still written on every move. Only the preview now waits for the next frame. - New FramePreview in src/editor/framePreview.ts. request() goes into the move handler, cancel() into the release. The rule lives in one place instead of six copies. - Scene view: object drag, polygon corners and tilemap strokes use it. - Texture tab: frames, slice edges and collision corners use it. - Graph: nodes, groups and comments use it through GraphDrags. That covers the state machine, shader and particle tabs as well. - Vector art is unchanged. Its frame already writes the model since #129. Findings: - The texture tab paid twice per move (232 project events for 120 moves). Pixi sends a second pointer event 4 to 8 ms after each real move as a hover update. It now lands in the same frame for free. - Inspector scrubbing and gradient stop dragging still preview on every input. Both lie outside the three canvases of the issue. Measured with a throwaway probe, 120 moves at 8 ms, 120 extra objects: scene 26.2 -> 18.5 ms/move, texture 34.2 -> 17.9, graph 28.8 -> 17.0. Project events dropped from 120/232/119 to 48/48/41. Tests: - ./check.sh: 147 files, 2204 tests, exit 0 (before 146 / 2199). - 5 new unit tests in tests/editor/frame-preview.test.ts, including the real GraphDrags. Counter-checks (direct preview in the graph, no cancel on release, one key per name) each fail the expected test. - e2e 1-16,29,31,36,37,39-43: 708 checks passed. - e2e 1-16,26,28: 634 checks passed. - No new e2e check, the check sum stays at 1314. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>