I Built a Coding Mentor That Remembered My Mistakes Better Than I Did

I used to think I was bad at recursion. Turns out, I wasn't bad at recursion — I just kept forgetting the same base case error every single time I opened a new tab on LeetCode. That realization hit me hard one Sunday afternoon when I failed the exact same Fibonacci problem I had failed three weeks earlier on a different platform. Same error. Same confusion. Same wasted hour. The platform had no idea. It just cheerfully served me another random problem like nothing had happened. That's when I decided to build something different. The Problem With Every Coding Platform You've Used LeetCode, HackerRank, Codecademy — I have used them all. They are brilliant for volume. But they all share one fatal flaw: they have the memory of a goldfish. Every session starts from zero. The platform has no idea you struggled with off-by-one errors in binary search last Tuesday. It doesn't know you have a habit of forgetting empty list handling in Python. It doesn't connect your past failures to your future