build(web): migrate to TypeScript 7 (retire tsgo bridge)

.pre-commit-config.yaml

@@ -123,7 +123,7 @@ repos:
     hooks:
       - id: studio-typecheck
         name: Run UI typecheck
-        entry: bash -c '[ -n "$CI" ] && exit 0; command -v pnpm >/dev/null 2>&1 || { echo "pnpm not installed, skipping typecheck (see web/README.md for setup)"; exit 0; }; cd web && pnpm --filter="...[origin/main]" run --parallel --if-present typecheck:go'
+        entry: bash -c '[ -n "$CI" ] && exit 0; command -v pnpm >/dev/null 2>&1 || { echo "pnpm not installed, skipping typecheck (see web/README.md for setup)"; exit 0; }; cd web && pnpm --filter="...[origin/main]" run --parallel --if-present typecheck'
         language: system
         files: ^web/
         pass_filenames: false

web/.agents/skills/test-coverage-improvement/SKILL.md

@@ -25,7 +25,7 @@ disable-model-invocation: true
 
 1. If the user named a package, use it (e.g. `studio`, `common`, `sdk`).
 2. Otherwise infer from open files or cwd under `web/packages/`.
-3. Read **`package.json`**: **`name`**, **`test`**, **`test:ci`**, **`typecheck`**, **`typecheck:go`** (if present), **`lint`** / **`lint:fix`** (if present).
+3. Read **`package.json`**: **`name`**, **`test`**, **`test:ci`**, **`typecheck`**, **`lint`** / **`lint:fix`** (if present).
 4. Read Vitest config (**`vite.config.ts`** / **`vitest.config.ts`**) → **`test.coverage`**: **`reportsDirectory`**, **`include` / `exclude`**.
 
 If there is **no** coverage tooling, add **`--coverage`** + reporters on the CLI for baseline, or build the shortlist without JSON (search + file importance only).
@@ -78,7 +78,7 @@ If the file is **untestable without refactor**, add a **short skip note** in the
 ### 3d. Verify before next file
 
 1. `pnpm vitest --run path/to/File.test.ts` (and any related specs) until **exit 0**.
-2. **`pnpm typecheck`**; **`pnpm typecheck:go`** if defined. Fix TypeScript issues (TanStack context, SDK types, etc.).
+2. **`pnpm typecheck`**. Fix TypeScript issues (TanStack context, SDK types, etc.).
 3. Optionally re-run coverage for the package and note improvement for that file.
 
 Keep a **running list** of every file path you **create or edit** during §3 (new **`*.test.*`**, and any production files you touch). You will pass that list to eslint in §4.

web/DEVELOPMENT.md

@@ -26,8 +26,8 @@ Runs type checking across all packages before pushing to remote.
 
 **What it does:**
 
-- Executes `pnpm run --recursive --parallel typecheck:go`
-- Uses the [TypeScript native port](https://devblogs.microsoft.com/typescript/typescript-native-port/) for improved performance
+- From `web/`, executes `pnpm --filter="...[origin/main]" run --parallel --if-present typecheck`
+- Runs the native TypeScript 7 compiler (`tsc`), matching CI
 - Prevents pushing code with type errors
 
 **Bypass if needed:**

web/package.json

@@ -50,6 +50,7 @@
     "lint-staged": "^16.4.0",
     "prettier": "^3.6.2",
     "tsx": "catalog:",
+    "typescript": "npm:@typescript/typescript6@6.0.2",
     "typescript-eslint": "^8.59.0"
   },
   "engines": {

web/packages/common/package.json

@@ -16,8 +16,7 @@
     "test:ci": "vitest run --coverage",
     "test:watch": "vitest watch",
     "test:once": "vitest --run",
-    "typecheck": "tsc --noEmit",
-    "typecheck:go": "tsgo --noEmit"
+    "typecheck": "tsc --noEmit"
   },
   "peerDependencies": {
     "@nemo/sdk": "workspace:*",
@@ -50,7 +49,6 @@
     "@types/papaparse": "^5.3.16",
     "@types/react": "catalog:",
     "@types/react-dom": "catalog:",
-    "@typescript/native-preview": "catalog:",
     "@vitejs/plugin-react": "catalog:",
     "@vitest/coverage-v8": "catalog:",
     "happy-dom": "catalog:",

web/packages/scripts/package.json

@@ -10,13 +10,11 @@
     "lint": "eslint . --max-warnings 0",
     "lint:fix": "eslint . --fix",
     "typecheck": "tsc --noEmit --noErrorTruncation",
-    "typecheck:go": "tsgo --noEmit --noErrorTruncation",
     "sortEnv": "tsx ./src/sortEnv.ts "
   },
   "devDependencies": {
     "@types/node": "catalog:",
     "@types/yargs": "^17.0.33",
-    "@typescript/native-preview": "catalog:",
     "knip": "^6.6.2",
     "prettier": "^3.2.5",
     "typescript": "catalog:",

web/packages/studio/package.json

@@ -32,7 +32,6 @@
     "test:e2e:record": "RECORD=1 playwright test --grep @record",
     "test:ci": "NODE_OPTIONS=--max-old-space-size=10240 CI=true vitest --run --coverage --reporter=junit --reporter=default",
     "typecheck": "tsc --noEmit --noErrorTruncation",
-    "typecheck:go": "tsgo --noEmit --noErrorTruncation",
     "bundle-visualize": "pnpm exec vite-bundle-visualizer -c vite.config.ts",
     "update-warning-count": "pnpm tsx ../common/scripts/update-max-warnings.ts",
     "screenshots": "tsx screenshots/capture.ts",
@@ -111,7 +110,6 @@
     "@types/react": "catalog:",
     "@types/react-dom": "catalog:",
     "@types/seedrandom": "^3.0.8",
-    "@typescript/native-preview": "catalog:",
     "@vitest/coverage-v8": "catalog:",
     "@vitest/ui": "catalog:",
     "blob-polyfill": "^9.0.20240710",

web/packages/testing/package.json

@@ -4,8 +4,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "typecheck": "tsc --noEmit",
-    "typecheck:go": "tsgo --noEmit"
+    "typecheck": "tsc --noEmit"
   },
   "exports": {
     "./*": "./src/*.ts"
@@ -15,7 +14,6 @@
     "@testing-library/jest-dom": "catalog:",
     "@testing-library/react": "catalog:",
     "@types/react-dom": "catalog:",
-    "@typescript/native-preview": "catalog:",
     "happy-dom": "catalog:",
     "typescript": "catalog:",
     "vitest": "catalog:",