Control Microsoft Office applications from AutoHotkey v2 using ComObject and ComObjActive

Steps

1. Create a new instance of an Office app with `app := ComObject("Word.Application")` (or `"Excel.Application"`), which starts the process if it isn't running
2. Set `app.Visible := true` if you want to see the automation happen instead of running it fully in the background
3. Attach to an already-running instance instead of launching a new one with `ComObjActive("Word.Application")`, wrapped in `try`/`catch` since it throws if no instance is registered
4. Drive the app through its COM object model exactly as in VBA, e.g. `app.ActiveDocument.FullName` or, for Excel, `xl.Workbooks.Add()` then `xl.Cells(1,1).Value := "Hello"`
5. Use `ComObjGet(Name)` when you need a reference to an object a COM component exposes by name/moniker rather than creating or attaching to the whole application
6. Remember `ComObject()`/`ComObjActive()` are the v2 function names — AutoHotkey v1 scripts used `ComObjCreate()` instead, so v1 COM snippets need renaming, not just syntax translation, to run under v2