feat: Minecraft theme overhaul, fix points bug, add history

frontend/GAMEPLAY.md

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+# CSP Adventure Guide
+
+Welcome to the CSP Adventure Server! This document explains the new gameplay mechanics and terminology used in the platform.
+
+## 🗺️ The World (Interface)
+
+The entire platform has been re-enchanted with a **Minecraft-themed** interface.
+- **Font**: Pixelated fonts (`Press Start 2P`, `VT323`) for that authentic retro feel.
+- **Blocks**: Buttons and panels are styled like in-game blocks (Wood, Stone, Obsidian).
+- **Day/Night**: Theme follows your system preference, but "Dark Mode" is the recommended "Cave" experience.
+
+## ⚔️ Quest Board (Problem List)
+
+The **Quest Board** is where you find your challenges.
+- **Wood Tier (Levels 1-2)**: 🪵 Beginner tasks. Chop wood, build a crafting table.
+- **Stone Tier (Levels 3-4)**: 🪨 Intermediate logic. Stone tools required.
+- **Iron Tier (Levels 5-6)**: ⚔️ Hard algorithms. Iron armor recommended.
+- **Diamond Tier (Levels 7-8)**: 💎 Expert challenges. Bring potions.
+- **Netherite Tier (Levels 9+)**: 🔥 Legendary problems. Only for the bravest adventurers.
+
+## 📜 Mission Scroll (Problem Detail)
+
+When you accept a quest, you receive a **Mission Scroll**.
+- **Objective**: Read the parchment to understand the task.
+- **Enchantment Table (Editor)**: Use the obsidian table to write your spells (code).
+- **Runes (Input/Output)**: Test your spells with input blocks.
+- **Casting (Run/Submit)**:
+    - **Test Run**: Cast a test spell to see if it fizzles.
+    - **Submit Quest**: Offer your solution to the server for judgment.
+
+## 🛡️ Character Sheet (Profile)
+
+Your **Profile** is your inventory and status screen.
+- **Avatar**: A unique pixel-art avatar generated from your soul signature (username).
+- **Level**: Your coding proficiency level, calculated from your total Rating (XP).
+- **Rank**:
+    - **Wood Rank**: < 1000 Rating
+    - **Stone Rank**: 1000 - 1199
+    - **Iron Rank**: 1200 - 1499
+    - **Diamond Rank**: 1500 - 1999
+    - **Netherite Rank**: 2000+
+- **Daily Quests**: Complete daily tasks (Sign-in, First Blood, Craftsman) to earn extra XP.
+
+## 💰 Trading Post (Redeem)
+
+Visit the **Villager Trading Post** to spend your hard-earned Rating (Emeralds).
+- Exchange Rating for tangible rewards or special server privileges.
+- Watch out for "Holiday Prices" vs "Workday Prices"!
+
+## 🏹 Raids (Contests)
+
+**Raids** are timed competitive events.
+- Join a Raid to compete against other adventurers.
+- Climb the **Leaderboard** to prove your strength.
+
+Happy Coding, Adventurer!