R7.1: bundled installers, one dmg and one setup.exe for all six apps

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

packaging/windows/bundle.nsi

@@ -0,0 +1,53 @@
+; Installs the ticked apps, each by its own setup.
+Unicode true
+!include "MUI2.nsh"
+
+!ifndef VERSION
+  !error "pass -DVERSION"
+!endif
+!ifndef APPS
+  !error "pass -DAPPS, from packaging/windows/bundle.sh"
+!endif
+!ifndef OUTFILE
+  !error "pass -DOUTFILE"
+!endif
+
+Name "Ely Office ${VERSION}"
+OutFile "${OUTFILE}"
+RequestExecutionLevel user
+; The setups inside are compressed already.
+SetCompress off
+
+!insertmacro MUI_PAGE_COMPONENTS
+!insertmacro MUI_PAGE_INSTFILES
+!insertmacro MUI_LANGUAGE "SimpChinese"
+!insertmacro MUI_LANGUAGE "English"
+
+LangString Failed ${LANG_SIMPCHINESE} "$R0 未装上，其安装程序退出码为 $R1（2 表示文件被占用或安装位置被占）。之前装上的应用照旧可用。"
+LangString Failed ${LANG_ENGLISH} "$R0 was not installed; its setup exited with $R1 (2: a file is in use or in the way). Apps installed before it work."
+
+Function .onInit
+  InitPluginsDir
+FunctionEnd
+
+; One section per app; its setup runs silent.
+!macro ElyApp NAME SETUP
+Section "${NAME}"
+  SetOutPath "$PLUGINSDIR"
+  File "/oname=${NAME}-setup.exe" "${SETUP}"
+  DetailPrint "${NAME}"
+  StrCpy $R0 "${NAME}"
+  ClearErrors
+  ExecWait '"$PLUGINSDIR\${NAME}-setup.exe" /S' $R1
+  IfErrors 0 +2
+    StrCpy $R1 "-"
+  Delete "$PLUGINSDIR\${NAME}-setup.exe"
+  StrCmp $R1 0 ely_done_${NAME}
+  MessageBox MB_ICONSTOP "$(Failed)" /SD IDOK
+  SetErrorLevel 2
+  Abort
+  ely_done_${NAME}:
+SectionEnd
+!macroend
+
+!include "${APPS}"