mcsee

Read @Dashboard.tsx and @api.ts. Do not write code yet.

Analyze the stack dump.

When you find the problem, explain it to me.

Then, write a Markdown plan to fix it, restricted to the REST API..

[Activate Code Mode]

mcsee

Fix the probabilistic predictor in the Kessler Syndrome Monitor component using this stack dump.

mcsee

Refactor this code and make it cleaner

mcsee

Mejorá este código y hacelo más limpio

mcsee

git status              # Check for uncommitted changes

git add .               # Stage all changes

git commit -m "msg"     # Commit with message

git diff                # See AI's changes

git reset --hard HEAD   # Revert AI changes

mcsee

# You analyze git history first:
# git log --format=format: --name-only | 
# grep -E '\.py$' | sort | uniq -c | sort -rn

# Results show PaymentProcessor changed 47 times this month
# And it doesn't have good enough coverage
# LegacyAuthenticator: 0 changes in 3 years

# Focus on the actual hotspot:
class PaymentProcessor:

mcsee

# This authentication module hasn't changed in 3 years
# It's deprecated and will be removed next quarter
# But you spend a week "improving" it

class LegacyAuthenticator:
    def authenticate(self, user, pwd):
        # Original messy code from 2019
        if user != None:
            if pwd != None:
                if len(pwd) > 5:

mcsee

import unicodedata

def normalize_email(email):
    # Convert to NFKC normalized form
    normalized = unicodedata.normalize('NFKC', email)
    
    # Ensure only ASCII characters
    try:
        normalized.encode('ascii')
    except UnicodeEncodeError:

mcsee

def reset_password(email_from_ui):
    # email_from_ui = "victim@gmàil.com" 
    # (attacker's Unicode address from UI)
    
    # Database with utf8mb4_unicode_ci collation
    # treats 'à' = 'a', so this query finds:
    # victim@gmail.com stored in the database
    cursor.execute(
        "SELECT * FROM users WHERE email = %s",
        (email_from_ui,)

mcsee

<?php

final class UserRepository {
    private Database $database;

    public function __construct(Database $database) {
        $this->database = $database;
    }

    public function find(UserId $id): User {