fix: add typescript as dependency to resolve knip peer dep (#17)

knip requires typescript >=5.0.4 as a peer dependency for its Astro
plugin. When react-doctor is executed via npx or pnpm dlx, the isolated
environment does not have access to the host project's node_modules,
causing ERR_MODULE_NOT_FOUND for typescript.

Adding typescript explicitly as a dependency ensures it is always
available when react-doctor is installed.

Fixes: ERR_MODULE_NOT_FOUND: Cannot find package 'typescript' imported
from knip/dist/plugins/astro/resolveFromAST.js

Author: olivermontes

packages/react-doctor/package.json

@@ -54,7 +54,8 @@
     "ora": "^9.3.0",
     "oxlint": "^1.47.0",
     "picocolors": "^1.1.1",
-    "prompts": "^2.4.2"
+    "prompts": "^2.4.2",
+    "typescript": ">=5.0.4 <7"
   },
   "devDependencies": {
     "@types/prompts": "^2.4.9",