* feat(base): add base block shortcuts
* fix(base): use block scopes for base block shortcuts
* fix(base): split base block shortcut scopes
* docs(base): consolidate base block help
* docs(base): simplify block help wording
* test(base): cover base block shortcut execution
* feat(base): filter base block list by type
* docs(base): clarify base block ids
* docs(base): simplify docx block help
* docs(base): refine base block agent help