Switch from venv to conda for environment management

- start.bat and start.sh now create conda env (paperdash, Python 3.11)
- README updated with conda setup instructions
- Fixes pyhwinfo installation issues on Python 3.12+

server/start.bat

@@ -1,20 +1,20 @@
 @echo off
 REM PaperDash Server Startup Script
-REM Creates venv if needed, installs dependencies, and starts the server
+REM Creates conda env if needed, installs dependencies, and starts the server
 
 setlocal
 
 cd /d "%~dp0"
 
-REM Create venv if it doesn't exist
-if not exist "venv" (
-    echo Creating virtual environment...
-    python -m venv venv
+REM Check if conda env exists
+if not exist "conda_env" (
+    echo Creating conda environment...
+    conda create -y -n paperdash python=3.11
+    call conda activate paperdash
+) else (
+    call conda activate paperdash
 )
 
-REM Activate venv
-call venv\Scripts\activate.bat
-
 REM Install dependencies
 echo Installing dependencies...
 pip install --upgrade pip