change(tooling): typecheck in CI, update ts to 6

fix(ui-tui): fix ts 6 real type errors

change(tooling): use new node everywhere

ui-tui/package.json

@@ -7,7 +7,7 @@
     "dev": "npm run build --prefix packages/hermes-ink && tsx --watch src/entry.tsx",
     "start": "tsx src/entry.tsx",
     "build": "node scripts/build.mjs",
-    "type-check": "tsc --noEmit -p tsconfig.json",
+    "typecheck": "tsc --noEmit -p tsconfig.json",
     "lint": "eslint src/ packages/",
     "lint:fix": "eslint src/ packages/ --fix",
     "fmt": "prettier --write 'src/**/*.{ts,tsx}' 'packages/**/*.{ts,tsx}'",
@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9",
-    "@types/node": "^25.5.0",
+    "@types/node": "^24.12.0",
     "@types/react": "^19.2.14",
     "@typescript-eslint/eslint-plugin": "^8",
     "@typescript-eslint/parser": "^8",
@@ -40,7 +40,7 @@
     "globals": "^16",
     "prettier": "^3",
     "tsx": "^4.19.0",
-    "typescript": "^5.7.0",
+    "typescript": "^6.0.3",
     "vitest": "^4.1.3"
   }
 }