Update README

Author: andy0130tw

README.md

@@ -8,7 +8,8 @@ Some notable customizations are:
 
 0. `package-lock.json` is NOT committed on purpose
 1. The included adapter is changed from `auto` to `@sveltejs/adapter-node`, assuming that you are not targeting [any specific deployment target](https://svelte.dev/docs/kit/adapter-auto).
-2. Split tsconfig of web/test/node environments via cascading `jsconfig.*.json` to avoid lib pollution.
+2. Split tsconfig of web/test/node environments via cascading `tsconfig.*.json` to avoid lib pollution while maintaining reasonable IDE/LSP expectations.
+   - tsbuildinfos are always deleted after a `svelte-kit sync` run. This is intended to convince tsc to write new ones.
 
 ## Instructions