Update dev dependencies and adapt to splat-transform 2.0 API

[slimbuck]

Summary

• Bump dev dependencies, including several majors: TypeScript 5.9 → 6.0,
  ESLint 9 → 10, @playcanvas/pcui 5 → 6, @playcanvas/splat-transform
  1.10 → 2.0, @rollup/plugin-terser 0 → 1, i18next 25 → 26.
• Migrate to splat-transform 2.0's new event-driven progress API: replace
  Logger/ProgressNode with Renderer/LogEvent in
  src/splat-serialize.ts, and explicitly unwindAll(true) on error so
  the progress dialog dismisses before any error popup.
• Implement the new required bytesWritten member on every Writer
  (BrowserFileWriter, BrowserDownloadWriter, GZipWriter,
  ProgressWriter, PublishWriter, and the WriterFileSystem wrapper).
• Minor adaptations for stricter library types: cast in picker.ts and
  splat-serialize.ts, widen polygon-selection handlers from
  PointerEvent to MouseEvent (since commitSelection is invoked from
  both pointerup and dblclick).
• Log splat-transform version in the startup banner.

Notes / follow-ups

• tsconfig.json temporarily disables strictNullChecks,
  strictPropertyInitialization, useUnknownInCatchVariables, and
  enables skipLibCheck to make the TypeScript 6 build pass without
  fixing the resulting errors in this PR. These should be re-enabled in
  a follow-up.

Test plan

• npm install resolves cleanly
• npm run build succeeds
• npm run lint passes under ESLint 10
• Export PLY, compressed PLY, SOG, HTML (bundled), and HTML package
  — verify the progress dialog opens, ticks, and closes
• Force an export error (e.g. cancel mid-stream) — verify the
  progress dialog dismisses before the error popup appears
• Polygon selection: lasso single-click commit and double-click
  both still work
• Publish flow uploads end-to-end
• Startup banner in DevTools shows SuperSplat / SplatTransform /
  Engine / PCUI versions

[Copilot]

Pull request overview

Updates development dependencies (including splat-transform 2.0) and adapts the app’s serialization/export plumbing to the new splat-transform APIs and type requirements.

Changes:

• Bump major dev dependencies (TypeScript 6, ESLint 10, pcui 6, splat-transform 2.0, etc.) and update lockfile.
• Migrate splat-transform progress reporting from Logger/ProgressNode to Renderer/LogEvent, and add explicit unwindAll(true) on export errors to dismiss progress UI.
• Implement required bytesWritten on all Writer implementations/wrappers; apply small typing tweaks in selection/picker code and log SplatTransform version at startup.

Reviewed changes

Copilot reviewed 8 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tsconfig.json	Adjust TS compiler options (incl. enabling skipLibCheck).
src/tools/polygon-selection.ts	Widen handler event types to MouseEvent for shared invocation paths.
src/splat-serialize.ts	Adapt to splat-transform 2.0 progress API; tag DataTable transform; unwind progress scopes on error.
src/publish.ts	Add bytesWritten support to WriterFileSystem wrapper and PublishWriter.
src/picker.ts	Tighten types with Splat[] casts for stricter library typings.
src/io/write/writer.ts	Add bytesWritten tracking to GZipWriter and ProgressWriter.
src/io/write/browser-file-system.ts	Add bytesWritten to browser writers for splat-transform Writer compliance.
src/index.ts	Include SplatTransform version info in the startup banner.
package.json	Bump devDependencies to newer major versions.
package-lock.json	Lockfile updates reflecting new dependency graph/engines/peers.
global.d.ts	Add types reference for File System Access API typings.

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[Copilot]

Pull request overview

Copilot reviewed 9 out of 12 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 9 out of 12 changed files in this pull request and generated 1 comment.

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[Copilot]

The repo-level Node engine constraint (>=20.19.0) is looser than the strictest dependency engines in the lockfile (e.g. ESLint declares ^20.19.0 || ^22.13.0 || >=24, which explicitly excludes Node 21 and 23, and requires Node 22.13+ for the 22.x line). To avoid giving contributors a false sense of support, consider aligning package.json.engines.node to the strictest effective range (or at least excluding unsupported majors like 21/23).

Suggested change

	"node": ">=20.19.0"
	"node": "^20.19.0 || ^22.13.0 || >=24"

[filipovicfilip1712-cmyk]

Pull request overview

Updates development dependencies (including splat-transform 2.0) and adapts the app’s serialization/export plumbing to the new splat-transform APIs and type requirements.

Changes:

• Bump major dev dependencies (TypeScript 6, ESLint 10, pcui 6, splat-transform 2.0, etc.) and update lockfile.
• Migrate splat-transform progress reporting from Logger/ProgressNode to Renderer/LogEvent, and add explicit unwindAll(true) on export errors to dismiss progress UI.
• Implement required bytesWritten on all Writer implementations/wrappers; apply small typing tweaks in selection/picker code and log SplatTransform version at startup.

Reviewed changes

Copilot reviewed 8 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tsconfig.json	Adjust TS compiler options (incl. enabling skipLibCheck).
src/tools/polygon-selection.ts	Widen handler event types to MouseEvent for shared invocation paths.
src/splat-serialize.ts	Adapt to splat-transform 2.0 progress API; tag DataTable transform; unwind progress scopes on error.
src/publish.ts	Add bytesWritten support to WriterFileSystem wrapper and PublishWriter.
src/picker.ts	Tighten types with Splat[] casts for stricter library typings.
src/io/write/writer.ts	Add bytesWritten tracking to GZipWriter and ProgressWriter.
src/io/write/browser-file-system.ts	Add bytesWritten to browser writers for splat-transform Writer compliance.
src/index.ts	Include SplatTransform version info in the startup banner.
package.json	Bump devDependencies to newer major versions.
package-lock.json	Lockfile updates reflecting new dependency graph/engines/peers.
global.d.ts	Add types reference for File System Access API typings.

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