add: absorb uno-online as regular subdirectory

UNO card game web app (Node.js/React) with Miku bot integration.
Previously an independent git repo (fork of mizanxali/uno-online).
Removed .git/ and absorbed into main repo for unified tracking.

Includes bot integration code: botActionExecutor, cardParser,
gameStateBuilder, and server-side bot action support.
37 files, node_modules excluded via local .gitignore.

uno-online/SETUP_NOTES.md

@@ -0,0 +1,152 @@
+# UNO Bot Integration - Setup Notes
+
+## Node.js Version Compatibility
+
+This project was originally developed with Node.js 14-16. 
+
+**IMPORTANT:** Due to PostCSS compatibility issues, this project requires Node.js 16 or 18.
+
+### Current System Issue
+- ❌ Node.js v25.3.0 - PostCSS subpath export errors
+- ✅ Node.js 18.x - Recommended
+- ✅ Node.js 16.x - Also works
+
+### Solution: Use nvm to switch Node version
+
+```bash
+# Install nvm if not already installed
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
+
+# Install Node 18
+nvm install 18
+
+# Use Node 18
+nvm use 18
+
+# Verify version
+node --version  # Should show v18.x.x
+```
+
+After switching to Node 18, proceed with the setup below.
+
+## Quick Start
+
+### 1. Install Dependencies
+
+**Server:**
+```bash
+cd /home/koko210Serve/docker/uno-online
+npm install
+```
+
+**Client:**
+```bash
+cd /home/koko210Serve/docker/uno-online/client
+npm install
+```
+
+### 2. Start Server (Terminal 1)
+```bash
+cd /home/koko210Serve/docker/uno-online
+npm start
+```
+Server runs on: `http://localhost:5000`
+
+### 3. Start Client (Terminal 2)
+```bash
+cd /home/koko210Serve/docker/uno-online/client
+npm start
+```
+Client opens at: `http://localhost:3000`
+
+### 4. Test Bot Integration
+
+**Create a game:**
+- Open `http://localhost:3000`
+- Click "CREATE GAME"
+- Note the room code (e.g., "ABCDEF")
+
+**Open browser console (F12)** to see game state logs
+
+**Test API:**
+```bash
+# Get game state (replace ABCDEF with your room code)
+curl http://localhost:5000/api/game/ABCDEF/state
+
+# Play a card (after joining as Player 2)
+curl -X POST http://localhost:5000/api/game/ABCDEF/action \
+  -H "Content-Type: application/json" \
+  -d '{"action":"draw_card"}'
+```
+
+## What to Look For
+
+### Browser Console Output
+When you play as Player 2, you'll see:
+
+```
+🎮 UNO GAME STATE (Simplified): { turn: "Player 2", currentCard: "5 red (5R)", ... }
+🤖 FULL GAME STATE (For Bot): { game: {...}, currentCard: {...}, ... }
+📋 JSON for Bot API:
+{
+  "game": { ... }
+  ...
+}
+```
+
+### Server Console Output
+```
+[Bot Game State] Room: ABCDEF
+{
+  "game": { ... }
+}
+```
+
+## Files Modified for Bot Integration
+
+### New Files
+- `/client/src/utils/cardParser.js` - Parse card codes to JSON
+- `/client/src/utils/gameStateBuilder.js` - Build comprehensive game state
+- `/BOT_INTEGRATION_GUIDE.md` - Full integration documentation
+- `/BOT_QUICK_REF.md` - Quick reference guide
+- `/SETUP_NOTES.md` - This file
+
+### Modified Files
+- `/client/src/components/Game.js` - Added state export and logging
+- `/server.js` - Added HTTP API endpoints and Socket.IO handlers
+
+## Common Issues
+
+### Port Already in Use
+If port 5000 or 3000 is busy:
+```bash
+# Kill process on port 5000
+lsof -ti:5000 | xargs kill -9
+
+# Kill process on port 3000
+lsof -ti:3000 | xargs kill -9
+```
+
+### npm Install Failures
+If you get peer dependency warnings, use:
+```bash
+npm install --legacy-peer-deps
+```
+
+### Module Not Found Errors
+Clear cache and reinstall:
+```bash
+rm -rf node_modules package-lock.json
+npm install
+```
+
+## Next Steps
+
+1. ✅ Game state exports to console
+2. ✅ HTTP API endpoints created
+3. ⏭️ Test manual API calls
+4. ⏭️ Integrate with Miku bot
+5. ⏭️ Create Discord command `/uno join [room_code]`
+6. ⏭️ Implement LLM decision-making
+
+See `BOT_INTEGRATION_GUIDE.md` for Miku bot integration details.