chore: add one-click startup script

start-aivideo.bat

@@ -0,0 +1,86 @@
+@echo off
+setlocal
+
+set "ROOT=%~dp0"
+cd /d "%ROOT%"
+
+echo [1/6] Checking Docker...
+where docker >nul 2>nul
+if errorlevel 1 (
+  echo Docker Desktop was not found in PATH.
+  pause
+  exit /b 1
+)
+
+echo [2/6] Starting mysql, redis and minio...
+docker compose up -d mysql redis minio
+if errorlevel 1 (
+  echo Failed to start docker services.
+  pause
+  exit /b 1
+)
+
+if not exist "%ROOT%backend\.env" (
+  echo Missing backend\.env
+  pause
+  exit /b 1
+)
+
+set "PYTHON_CMD="
+where py >nul 2>nul
+if not errorlevel 1 set "PYTHON_CMD=py -3"
+
+if not defined PYTHON_CMD (
+  where python >nul 2>nul
+  if not errorlevel 1 set "PYTHON_CMD=python"
+)
+
+if not defined PYTHON_CMD (
+  echo Python was not found in PATH.
+  pause
+  exit /b 1
+)
+
+if not exist "%ROOT%backend\.venv\Scripts\python.exe" (
+  echo [3/6] Creating backend virtual environment...
+  call %PYTHON_CMD% -m venv "%ROOT%backend\.venv"
+  if errorlevel 1 (
+    echo Failed to create backend virtual environment.
+    pause
+    exit /b 1
+  )
+
+  echo [4/6] Installing backend dependencies...
+  call "%ROOT%backend\.venv\Scripts\python.exe" -m pip install --disable-pip-version-check -r "%ROOT%backend\requirements.txt"
+  if errorlevel 1 (
+    echo Failed to install backend dependencies.
+    pause
+    exit /b 1
+  )
+) else (
+  echo [3/6] Backend virtual environment already exists.
+)
+
+if not exist "%ROOT%node_modules" (
+  echo [5/6] Installing frontend dependencies...
+  call npm install
+  if errorlevel 1 (
+    echo Failed to install frontend dependencies.
+    pause
+    exit /b 1
+  )
+) else (
+  echo [5/6] Frontend dependencies already exist.
+)
+
+echo [6/6] Starting backend and unified frontend...
+start "AIVideo Backend" cmd /k "cd /d ""%ROOT%backend"" && ""%ROOT%backend\.venv\Scripts\python.exe"" -m uvicorn app.main:app --reload --host 0.0.0.0 --port 8000"
+start "AIVideo Frontend" cmd /k "cd /d ""%ROOT%"" && npm run dev"
+
+echo.
+echo User UI:   http://localhost:3000
+echo Admin UI:  http://localhost:3000/admin/login
+echo API:       http://localhost:8000
+echo.
+echo Two windows have been opened for backend and frontend.
+pause