Security Update
I had AI do a review of all of TAD Coin’s code to look for vulnerabilities. It found a few pretty high severity issues which I patched in the latest commit.

Fixes:

• There was no password strength requirements on signup. I fixed this by requiring 8 characters, uppercase character, number, and special character.
• Added blockchain sanitization to prevent malicious data from being injected.
• Replaced console.error calls with a custom logger utility to prevent errors from leaking system info.