Phase 0 评审修复：init.sh 跨平台兼容 + production SECRET_KEY 强制校验 + 文档同步

init.ps1

@@ -8,9 +8,14 @@
 $ErrorActionPreference = "Stop"
 Set-Location -Path $PSScriptRoot
 
-$InstallCmd = ".venv/bin/pip install -r requirements.txt"
-$VerifyCmd  = ".venv/bin/python manage.py check"
-$StartCmd   = ".venv/bin/python manage.py runserver"
+$InstallCmd = ".venv/bin/pip3.12 install -r requirements.txt"
+$VerifyCmd  = ".venv/bin/python3.12 manage.py check"
+$StartCmd   = ".venv/bin/python3.12 manage.py runserver"
+
+if (-not (Test-Path ".venv/bin/python3.12") -and -not (Test-Path ".venv/bin/python3.12.exe")) {
+  Write-Error "venv 不存在或损坏，请先运行: python3.12 -m venv .venv"
+  exit 1
+}
 
 Write-Host "==> 当前目录: $($PWD.Path)"