docs: add shadow v3 field operations package

scripts/shadow-v3-uninstall.cmd

@@ -0,0 +1,35 @@
+@echo off
+setlocal EnableExtensions DisableDelayedExpansion
+
+if "%~1"=="" goto :usage
+if "%~2"=="" goto :usage
+if "%~3"=="" goto :usage
+if not "%~3"=="CONFIRM_UNINSTALL" goto :refuse
+
+set "SQL_SERVER=%~1"
+set "DATABASE=%~2"
+set "SQL_FILE=%~dp0..\fortucky-algorithm\src\main\resources\db\sqlserver\uninstall-shadow.sql"
+
+if not exist "%SQL_FILE%" (call :fail "uninstall SQL file is missing" & exit /b 1)
+where sqlcmd >nul 2>nul
+if errorlevel 1 (call :fail "sqlcmd is not available on PATH" & exit /b 1)
+
+echo WARNING: export all alg.* evidence before uninstalling.
+echo The shadow application must be stopped and the stable service restored first.
+sqlcmd -S "%SQL_SERVER%" -d "%DATABASE%" -E -b -r1 -i "%SQL_FILE%"
+if errorlevel 1 exit /b 1
+
+echo UNINSTALL_OK
+exit /b 0
+
+:usage
+echo Usage: %~nx0 SQL_SERVER DATABASE CONFIRM_UNINSTALL 1>&2
+exit /b 2
+
+:refuse
+echo UNINSTALL_REFUSED third argument must be CONFIRM_UNINSTALL 1>&2
+exit /b 3
+
+:fail
+echo UNINSTALL_FAILED %~1 1>&2
+exit /b 1