feat: add comprehensive Windows/WSL support and documentation

Major improvements for Windows users:
- Add detailed Windows Setup Guide with native and WSL options
- Create platform-specific example configurations (Windows/WSL/macOS)
- Add troubleshooting section addressing common Windows/WSL errors
- Create test_wsl_setup.bat diagnostic script for Windows users

Script improvements:
- Enhance run_gemini.bat with error handling and helpful messages
- Update both run scripts to use server.py as main entry point
- Keep gemini_server.py as backward compatibility wrapper

Documentation:
- Add clear instructions for both native Windows and WSL setups
- Explain the wsl.exe bridge approach for WSL users
- Include performance recommendations for WSL file access
- Add specific troubleshooting for spawn ENOENT errors

All tests passing, code properly formatted and linted.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

test_wsl_setup.bat

@@ -0,0 +1,81 @@
+@echo off
+REM Test script for Windows users to verify WSL setup
+
+echo Testing WSL setup for Gemini MCP Server...
+echo.
+
+REM Check if WSL is available
+wsl --status >nul 2>&1
+if errorlevel 1 (
+    echo ERROR: WSL is not installed or not available.
+    echo Please install WSL2 from: https://docs.microsoft.com/en-us/windows/wsl/install
+    exit /b 1
+)
+
+echo [OK] WSL is installed
+echo.
+
+REM Get default WSL distribution
+for /f "tokens=1" %%i in ('wsl -l -q') do (
+    set WSL_DISTRO=%%i
+    goto :found_distro
+)
+
+:found_distro
+echo Default WSL distribution: %WSL_DISTRO%
+echo.
+
+REM Test Python in WSL
+echo Testing Python in WSL...
+wsl python3 --version
+if errorlevel 1 (
+    echo ERROR: Python3 not found in WSL
+    echo Please install Python in your WSL distribution:
+    echo   wsl sudo apt update
+    echo   wsl sudo apt install python3 python3-pip python3-venv
+    exit /b 1
+)
+
+echo [OK] Python is available in WSL
+echo.
+
+REM Provide example configurations
+echo Example Claude Desktop configurations:
+echo.
+echo For WSL (if your code is in Windows filesystem):
+echo {
+echo   "mcpServers": {
+echo     "gemini": {
+echo       "command": "wsl.exe",
+echo       "args": ["/mnt/c/path/to/gemini-mcp-server/run_gemini.sh"],
+echo       "env": {
+echo         "GEMINI_API_KEY": "your-key-here"
+echo       }
+echo     }
+echo   }
+echo }
+echo.
+echo For WSL (if your code is in WSL home directory - recommended):
+echo {
+echo   "mcpServers": {
+echo     "gemini": {
+echo       "command": "wsl.exe",
+echo       "args": ["~/gemini-mcp-server/run_gemini.sh"],
+echo       "env": {
+echo         "GEMINI_API_KEY": "your-key-here"
+echo       }
+echo     }
+echo   }
+echo }
+echo.
+echo For Native Windows:
+echo {
+echo   "mcpServers": {
+echo     "gemini": {
+echo       "command": "C:\\path\\to\\gemini-mcp-server\\run_gemini.bat",
+echo       "env": {
+echo         "GEMINI_API_KEY": "your-key-here"
+echo       }
+echo     }
+echo   }
+echo }