fix(cli): add quotes around executable and source paths in launcher script

The launcher script was not properly handling file paths or executable names containing spaces, which could cause runtime errors during execution or credential management. Adding quotes ensures compatibility with paths that include spaces.

launcher.bat

@@ -175,7 +175,7 @@ goto :ConfigMenu
 :: --- Phase 4: Execution ---
 :RunProxy
 cls
-set "ARGS=--host %HOST% --port %PORT%"
+set "ARGS=--host "%HOST%" --port %PORT%"
 if "%LOGGING%"=="true" (
     set "ARGS=%ARGS% --enable-request-logging"
 )
@@ -183,10 +183,10 @@ echo Starting Proxy...
 echo Arguments: %ARGS%
 echo.
 if "%EXECUTION_MODE%"=="exe" (
-    start "LLM API Proxy" %EXE_NAME% %ARGS%
+    start "LLM API Proxy" "%EXE_NAME%" %ARGS%
 ) else (
     set "PYTHONPATH=%~dp0src;%PYTHONPATH%"
-    start "LLM API Proxy" python %SOURCE_PATH% %ARGS%
+    start "LLM API Proxy" python "%SOURCE_PATH%" %ARGS%
 )
 exit /b 0
 
@@ -195,10 +195,10 @@ cls
 echo Launching Credential Tool...
 echo.
 if "%EXECUTION_MODE%"=="exe" (
-    %EXE_NAME% --add-credential
+    "%EXE_NAME%" --add-credential
 ) else (
     set "PYTHONPATH=%~dp0src;%PYTHONPATH%"
-    python %SOURCE_PATH% --add-credential
+    python "%SOURCE_PATH%" --add-credential
 )
 pause
 goto :MainMenu
@@ -210,7 +210,7 @@ echo      Building Executable
 echo ==================================================
 echo.
 echo The build process will start in a new window.
-start "Build Process" cmd /c "pip install -r requirements.txt && pip install pyinstaller && python src/proxy_app/build.py && echo Build finished. && pause"
+start "Build Process" cmd /c "pip install -r requirements.txt && pip install pyinstaller && python "src/proxy_app/build.py" && echo Build finished. && pause"
 exit /b
 
 :: --- Helper Functions ---
@@ -224,8 +224,8 @@ echo.
 echo   Both executable and source code found.
 echo   Please choose which to use:
 echo.
-echo   1. Executable (%EXE_NAME%)
-echo   2. Source Code (%SOURCE_PATH%)
+echo   1. Executable ("%EXE_NAME%")
+echo   2. Source Code ("%SOURCE_PATH%")
 echo.
 set /p "CHOICE=Enter your choice: "
 
@@ -280,8 +280,8 @@ echo ==================================================
 echo      Error
 echo ==================================================
 echo.
-echo   Could not find the executable (%EXE_NAME%)
-echo   or the source code (%SOURCE_PATH%).
+echo   Could not find the executable ("%EXE_NAME%")
+echo   or the source code ("%SOURCE_PATH%").
 echo.
 echo   Please ensure the launcher is in the correct
 echo   directory or that the project has been built.