install.bat: fix Win11 detection, stale errorlevel in blocks, remove pause

- Echo with (no ABSOLUTE flag) had unescaped ) closing the if block early,
  causing BOTH Win11 and Win10 branches to run and wrong requirements used.
  Fix: escape the parens with ^( and ^).
- %errorlevel% inside ( ) blocks is expanded at parse time, not after the
  command that sets it. Affects winget install result check, tesseract winget
  check, pytesseract check, and dependency verify loop.
  Fix: use !errorlevel! (delayed expansion) in those four spots.
- Remove final pause so the CMD window closes automatically on success.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install.bat

@@ -18,7 +18,7 @@ if not defined WIN_BUILD (
 echo Detected Windows build: %WIN_BUILD%
 set /a "WIN_BUILD_NUM=%WIN_BUILD%" 2>nul || set "WIN_BUILD_NUM=0"
 if %WIN_BUILD_NUM% GEQ 22000 (
-    echo Detected Windows 11 — using relative mouse mode (no ABSOLUTE flag)
+    echo Detected Windows 11 -- using relative mouse mode ^(no ABSOLUTE flag^)
     set "WIN11=1"
     set "REQ_FILE=requirements-win11.txt"
     set "ENV_FILE=environment-win11.yml"
@@ -64,7 +64,7 @@ if %errorlevel% equ 0 (
     echo Installing via winget...
     winget install --id CondaForge.Miniforge3 --exact --silent ^
         --accept-package-agreements --accept-source-agreements
-    if %errorlevel% equ 0 goto :rescan_conda
+    if !errorlevel! equ 0 goto :rescan_conda
     echo winget install failed — falling back to direct download.
     echo.
 )
@@ -283,7 +283,7 @@ if exist "dependencies\tesserocr.cp310-win_amd64.pyd" (
 if not exist "C:\Program Files\Tesseract-OCR\tesseract.exe" (
     echo   Installing Tesseract OCR via winget...
     winget install --id tesseract-ocr.tesseract --silent --accept-package-agreements --accept-source-agreements 2>nul
-    if %errorlevel% neq 0 (
+    if !errorlevel! neq 0 (
         echo   winget failed -- on Windows 10 you may need to install manually:
         echo   https://github.com/tesseract-ocr/tesseract/releases
         echo   Download the win64 installer, run it, keep the default install path.
@@ -306,7 +306,7 @@ if %errorlevel% == 0 (
 
 if exist "C:\Program Files\Tesseract-OCR\tesseract.exe" (
     "%CONDA_EXE%" run -n botty python -c "import pytesseract; pytesseract.pytesseract.tesseract_cmd=r'C:\Program Files\Tesseract-OCR\tesseract.exe'; pytesseract.get_tesseract_version()" >nul 2>&1
-    if %errorlevel% == 0 (
+    if !errorlevel! == 0 (
         echo   pytesseract: OK ^(reliable fallback^)
         set "OCR_READY=1"
     ) else (
@@ -330,7 +330,7 @@ set "ALL_OK=1"
 for %%M in (cv2 mss numpy discord transitions rapidfuzz) do (
     set "PATH=%TESS_PATH%;%PATH%"
     "%CONDA_EXE%" run -n botty python -c "import %%M" >nul 2>&1
-    if %errorlevel% neq 0 (
+    if !errorlevel! neq 0 (
         echo FAILED: %%M
         set "ALL_OK=0"
     ) else (
@@ -358,4 +358,3 @@ echo  Installation complete!
 echo  Run botty with:  run_botty.bat
 echo ============================================
 echo.
-pause