Add dual GPU support with web UI selector

Features:
- Built custom ROCm container for AMD RX 6800 GPU
- Added GPU selection toggle in web UI (NVIDIA/AMD)
- Unified model names across both GPUs for seamless switching
- Vision model always uses NVIDIA GPU (optimal performance)
- Text models (llama3.1, darkidol) can use either GPU
- Added /gpu-status and /gpu-select API endpoints
- Implemented GPU state persistence in memory/gpu_state.json

Technical details:
- Multi-stage Dockerfile.llamaswap-rocm with ROCm 6.2.4
- llama.cpp compiled with GGML_HIP=ON for gfx1030 (RX 6800)
- Proper GPU permissions without root (groups 187/989)
- AMD container on port 8091, NVIDIA on port 8090
- Updated bot/utils/llm.py with get_current_gpu_url() and get_vision_gpu_url()
- Modified bot/utils/image_handling.py to always use NVIDIA for vision
- Enhanced web UI with GPU selector button (blue=NVIDIA, red=AMD)

Files modified:
- docker-compose.yml (added llama-swap-amd service)
- bot/globals.py (added LLAMA_AMD_URL)
- bot/api.py (added GPU selection endpoints and helper function)
- bot/utils/llm.py (GPU routing for text models)
- bot/utils/image_handling.py (GPU routing for vision models)
- bot/static/index.html (GPU selector UI)
- llama-swap-rocm-config.yaml (unified model names)

New files:
- Dockerfile.llamaswap-rocm
- bot/memory/gpu_state.json
- bot/utils/gpu_router.py (load balancing utility)
- setup-dual-gpu.sh (setup verification script)
- DUAL_GPU_*.md (documentation files)

bot/Dockerfile

@@ -6,15 +6,14 @@ COPY requirements.txt .
 RUN pip install -r requirements.txt
 RUN playwright install
 
+# Install system dependencies
+# ffmpeg: video/audio processing for media handling
+# libgl1: OpenGL library required by opencv-contrib-python
+# libglib2.0-0: GLib library (common dependency)
 RUN apt-get update && apt-get install -y \
     ffmpeg \
-    libsm6 \
-    libxext6 \
-    libxcomposite1 \
-    libxdamage1 \
-    libgtk-3-0 \
-    libgdk3.0-cil \
-    libatk1.0-0 \
+    libgl1 \
+    libglib2.0-0 \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*