chore(ts7): adopt the TypeScript 7 native compiler (tsgo)

Make the editor packages compatible with, and benefit from, the native Go
compiler (TypeScript 7 / tsgo) while keeping the npm publish path on stable tsc.

- Add @typescript/native-preview (pinned 7.0.0-dev.20260624.1). tsgo coexists
  with typescript@6, which Next typegen and the IDE plugin still need until the
  TS 7.1 programmatic API ships.
- Fix two react-three-fiber JSX augmentations the native checker rejects but
  tsc tolerated:
  - viewer: map only LineBasicNodeMaterial (the one webgpu node material used as
    a JSX tag) instead of the whole three/webgpu namespace (TS2320/TS2590).
  - plane-box-select-tool: drop the redundant `IntrinsicElements extends
    ThreeElements` block — it duplicated R3F's global augmentation and, by
    referencing @react-three/fiber's ThreeElements directly, hit a bun peer-dep
    variant-directory duplicate under tsgo (TS2320). r3f.d.ts already covers
    those JSX intrinsics. Types-only — no runtime change.
- check-types -> tsgo --noEmit (editor, @repo/ui, editor app, ifc-converter app)
- emit-package dev watch -> tsgo --build --watch
- build/publish stay tsc --build (prepublishOnly + release.yml unchanged;
  emitted .d.ts is byte-identical to tsc output)
- bump next 16.2.6 -> 16.2.9

tsc remains the source of truth and fallback. Published artifacts unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/core/package.json

@@ -58,7 +58,7 @@
   ],
   "scripts": {
     "build": "tsc --build",
-    "dev": "tsc --build --watch",
+    "dev": "tsgo --build --watch",
     "test": "bun test",
     "bench:registry": "bun run src/registry/__bench__/relations-resolver.bench.ts",
     "prepublishOnly": "npm run build"

packages/editor/package.json

@@ -8,7 +8,7 @@
     "./catalog": "./src/components/ui/item-catalog/catalog-items.tsx"
   },
   "scripts": {
-    "check-types": "tsc --noEmit"
+    "check-types": "tsgo --noEmit"
   },
   "peerDependencies": {
     "@pascal-app/core": "^0.9.1",

packages/editor/src/components/tools/select/plane-box-select-tool.tsx

@@ -10,7 +10,6 @@ import {
   type ZoneNode,
 } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
-import type { ThreeElements } from '@react-three/fiber'
 import { useThree } from '@react-three/fiber'
 import { useCallback, useEffect, useRef } from 'react'
 import {
@@ -34,12 +33,6 @@ import { CursorSphere } from '../shared/cursor-sphere'
 import { isBoxSelectPointerSuppressed, markBoxSelectHandled } from './box-select-state'
 import { collectSelectableCandidateIds } from './select-candidates'
 
-declare module 'react/jsx-runtime' {
-  namespace JSX {
-    interface IntrinsicElements extends ThreeElements {}
-  }
-}
-
 type Bounds = { minX: number; maxX: number; minZ: number; maxZ: number }
 
 const BOX_SELECT_ACCENT_COLOR = '#818cf8'

packages/ifc-converter/package.json

@@ -18,7 +18,7 @@
   ],
   "scripts": {
     "build": "tsc --build",
-    "dev": "tsc --build --watch",
+    "dev": "tsgo --build --watch",
     "prepublishOnly": "npm run build"
   },
   "dependencies": {

packages/mcp/package.json

@@ -48,7 +48,7 @@
   ],
   "scripts": {
     "build": "tsc --build",
-    "dev": "tsc --build --watch",
+    "dev": "tsgo --build --watch",
     "start": "bun dist/bin/pascal-mcp.js",
     "test": "bun test",
     "smoke": "bun run scripts/smoke.ts",

packages/nodes/package.json

@@ -18,7 +18,7 @@
   ],
   "scripts": {
     "build": "tsc --build",
-    "dev": "tsc --build --watch",
+    "dev": "tsgo --build --watch",
     "test": "bun test",
     "prepublishOnly": "bun run build && bun test"
   },

packages/ui/package.json

@@ -8,7 +8,7 @@
   "scripts": {
     "lint": "eslint . --max-warnings 0",
     "generate:component": "turbo gen react-component",
-    "check-types": "tsc --noEmit"
+    "check-types": "tsgo --noEmit"
   },
   "devDependencies": {
     "@repo/eslint-config": "*",

packages/viewer/package.json

@@ -18,7 +18,7 @@
   ],
   "scripts": {
     "build": "tsc --build",
-    "dev": "tsc --build --watch",
+    "dev": "tsgo --build --watch",
     "prepublishOnly": "npm run build"
   },
   "peerDependencies": {

packages/viewer/src/components/viewer/index.tsx

@@ -7,7 +7,7 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { Canvas, extend, type ThreeToJSXElements, useFrame, useThree } from '@react-three/fiber'
+import { Canvas, extend, type ThreeElement, useFrame, useThree } from '@react-three/fiber'
 import {
   forwardRef,
   useEffect,
@@ -38,7 +38,15 @@ import { SelectionManager } from './selection-manager'
 import { ViewerCamera } from './viewer-camera'
 
 declare module '@react-three/fiber' {
-  interface ThreeElements extends ThreeToJSXElements<typeof THREE> {}
+  // The TS 7 native compiler (tsgo) rejects mapping the entire `three/webgpu`
+  // namespace into JSX — `ThreeToJSXElements<typeof THREE>` triggers a TS2320
+  // heritage conflict with R3F's core-three base plus a TS2590 "union too
+  // complex". tsc 6 tolerates it; tsgo does not. R3F's base ThreeElements
+  // already covers core three, so we extract only the webgpu/TSL node materials
+  // we actually use as JSX (see r3f.docs.pmnd.rs/api/typescript).
+  interface ThreeElements {
+    lineBasicNodeMaterial: ThreeElement<typeof THREE.LineBasicNodeMaterial>
+  }
 }
 
 extend(THREE as any)