Release chartgpu-react 0.3.0 (ChartGPU 0.3.6 + TypeScript 7)

[hunterg325]

Summary

Pre-release of chartgpu-react 0.3.0, aligned with @chartgpu/chartgpu ^0.3.6.

• Peer bump to ChartGPU ^0.3.6 and package version 0.3.0; package name restored to chartgpu-react for npmjs.org
• Expand 0.3.x API surface: appendData + { maxPoints }, setZoomRange source, type re-exports (heatmap, band, 3D, etc.)
• TypeScript 7.0 (typescript ^7.0.2), Vite 7, Vitest 4, React 19 types in dev; Node ≥20
• Build: Vite ESM bundle + tsc declaration emit — vite-plugin-dts removed (incompatible with TypeScript 7’s slim package API)
• useGPUContext StrictMode fix: shared initPromiseRef so remount reuses one GPU init
• Examples redesigned (Hallmark / ChartGPU dev-site DNA) with modern demos including 3D
• GitHub Actions CI: typecheck + test + build on PR/push to main
• Mock-based unit coverage for handle forwarding, useConnectCharts, useGPUContext, events, and package exports

TypeScript 7 upgrade

Item	Detail
Version	typescript ^7.0.2 (was ^5.3.3)
Declarations	tsc -p tsconfig.build.json after Vite build
Removed	vite-plugin-dts (does not work with TS 7’s slim package API)
Related	Vite 7, Vitest 4, @types/react 19, engines node >= 20

Test plan

• npm ci && npm run typecheck && npm test && npm run build green locally and in CI
• Smoke examples (npm run dev) — line, candlestick, multi-chart, 3D demos load on WebGPU Chrome
• Confirm peer resolution against @chartgpu/chartgpu@0.3.6
• Review CHANGELOG 0.3.0 for release notes accuracy before npm publish