astro check restored: tsconfig excludes public/ (the 2 MB vendored CMS bundle was what exhausted the heap) and extends tsconfigs/strict; type annotations in template scripts, z from astro/zod; exact version pins; compressHTML true (lossless whitespace, no words glued to links) and explicit trailingSlash/build.format; README: upgrading section

tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "astro/tsconfigs/base",
+  "extends": "astro/tsconfigs/strict",
   "include": [".astro/types.d.ts", "**/*"],
-  "exclude": ["dist"]
+  "exclude": ["dist", "public"]
 }