docs(readme): revamp readme with improved formatting and introduction

README.md

@@ -1,19 +1,16 @@
-# LeetCode
+<p align="center">
+  <img alt="header" src="https://shieldcn.dev/header/gradient.svg?title=prdlk%2Fleetcode&amp;subtitle=Personal+Leetcode+solutions%2C+concepts%2C+and+patterns&amp;logo=leetcode&amp;mode=dark" />
+</p>
 
-## Introduction
+<p align="center">
+  <a href="https://x.com/basedprad"><img alt="follow" src="https://shieldcn.dev/x/follow/basedprad.svg" /></a>
+  <a href="https://lc.prad.nu"><img alt="badge" src="https://shieldcn.dev/badge/Read-Documentation.svg?logo=lu%3ABook" /></a>
+</p>
 
-Day 1: Frequency map + sort-with-tiebreak until automatic (LC 1365, 1636, 451)
+## Overview
-Day 2: Write Event Emitter and Throttle from blank file, twice each (LC 2694, 2676, 359)
-Day 3: Pattern-deduction reps — grab LC easy problems, look only at examples, guess the rule, then verify. 10–15 reps
 
-## Frequency Map + Sort-With-Tiebreaker
+Relevant problems for myself
 
-- [LC-1365](./lc-1365/README.md)
+- 🎨 Guides
-- [LC-1636](./lc-1636/README.md)
+- ⚡ Solutions
-- [LC-451](./lc-451/README.md)
+- ♿ Patterns
-
-## Event Emitter + Throttle
-
-- [LC-2694](./lc-2694/README.md)
-- [LC-2676](./lc-2676/README.md)
-- [LC-359](./lc-359/README.md)