fix: inline all Parcel-generated JS files including code-split chunks

CRITICAL FIX:
Previous error: "Cannot find module 'aBo8e' at http://localhost:51990/:669:576"

ROOT CAUSE:
Parcel was creating code-split chunks (ccip.062d8422.js) as separate files.
GameBridgeServer only serves index.html, so external JS modules fail to load.

SOLUTION:
Updated transform-bigint.js to:
1. Find ALL .js files in dist/unity/ directory
2. Inline every JS file into index.html (not just index.js)
3. This includes code-split chunks like ccip.*.js

VERIFICATION:
- Now inlining 2 JS files: ccip.062d8422.js (5.8 KB) + ccip.c62e73be.js (5.7 KB)
- Module 'aBo8e' is now defined inline
- GameBridgeServer can serve single self-contained HTML file

This should resolve the module loading errors.

Author: rodrigo-fournier-immutable