chore(deps): move packages to TypeScript 6.0.3

Raises the typescript devDependency across the workspace, bumps package
versions, re-adds ignoreDeprecations, and repoints the @wrnexus registry.

These were pre-existing working-tree changes, committed as-is rather than
authored here. The .npmrc change redirects @wrnexus publishes from
registry.npmjs.org to registry.workroot.in — confirm that is intended
before publishing from this branch.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

packages/typecheck/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wrnexus/typecheck",
-  "version": "0.8.9",
+  "version": "0.8.10",
   "type": "module",
   "main": "src/index.ts",
   "exports": {
@@ -10,6 +10,6 @@
   },
   "dependencies": {
     "@wrnexus/syntax": "workspace:*",
-    "typescript": "^5.5.0"
+    "typescript": "^6.0.3"
   }
 }