v9.4.0-alpha.2

• fix: add npm metadata to all modules (#10358)
• feat(jupyter-widget, pydeck): register @deck.gl/extensions for JSON @@type resolution (#10447)
• feat(core): add explicit WebGPU buffer groups (#10151)
• feat(core): add trackpad gesture support to controllers (#10459)
• examples: update OpenSky Network URLs (#10465)
• fix: update Zurich Summit 2026 event page map to HIL building (#10445)
• feat(website): persist selected device tab (#10467)
• feat(layers): add simple WebGPU layer ports (#10466)
• fix(react): remove redundant initial render redraw (#10428)
• feat(pydeck): register GlobeView canonical alias in jupyter-widget (#10451)
• feat(aggregation-layers): port HexagonLayer to WebGPU (#10471)
• feat(aggregation-layers): port ScreenGridLayer to WebGPU (#10472)
• feat(layers): port BitmapLayer to WebGPU (#10470)
• feat(pydeck): add lighting and post-processing effects (#10455)
• refactor(core): make WebGPU shader props unconditional (#10479)
• feat(website): pass device to example apps (#10480)
• feat(layers): port PathLayer to WebGPU (#10113)
• refactor(core): honor canvas contexts throughout render passes (#10474)
• fix(core): position widgets relative to their canvas (#10491)
• feat(aggregation-layers): port HeatmapLayer to WebGPU (#10483)
• feat(layers): port SolidPolygonLayer to WebGPU (#10142)
• chore: update luma.gl to 9.4.0-alpha.1 (#10478)
• chore(test): enable render tests for WebGPU (#10493)
• feat(website): enable WebGPU polygon-dependent examples (#10494)
• fix(core): preserve WebGPU polygon side buffers (#10505)