fixfix(cmdatom): repeat Visual <Cmd>; CmdFrame + stage #41355

Problem:
- Dot-repeat of a Visual selection prepared by a `<Cmd>` mapping,
  results in E1255 and leaves Visual mode active.
- Visual-mode capture is implemented as a second, parallel "capture
  engine": it re-composes a CmdSpec from cmdarg_T per key and decides
  replayability from its own table of "void" key classes.

Solution:
- Model nested `normal_execute()` as a `CmdFrame` stack,
  instead of a single module-scoped `stage`.
  - Capture `<Cmd>` ":norm …" commands as subatoms from its nested frames.
- Produce every command exactly once; atom_push_raw() routes the atom to
  the Visual composite while a selection is open, like it already does
  for mapping composites.
  - `v/pat<CR>d` is now repeatable and cascades.

0 files changed, 0 insertions, 0 deletions