fix: configure TypeScript for non-module browser scripts

- Change module setting from 'ES2020' to 'none'
- Remove resolveJsonModule and moduleResolution options (incompatible with module: none)
- Prevents TypeScript from adding 'export {}' statements to compiled JS
- Scripts are loaded as regular JavaScript, not ES modules
- Fixes 'Unexpected token export' error in browser

This allows TypeScript type checking while generating plain JavaScript
that works with traditional script tags in HTML.

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "target": "ES2020",
-    "module": "ES2020",
+    "module": "none",
     "lib": ["ES2020", "DOM"],
     "outDir": "./web/static",
     "rootDir": "./web/src",
@@ -9,8 +9,6 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
-    "moduleResolution": "node",
-    "resolveJsonModule": true,
     "declaration": false,
     "sourceMap": false,
     "noUnusedLocals": true,