run_argv, run_argv_batch, fetch, fetch_local, and the vcs tools now return
their output whole, so the request-prep cap trims it on the wire and names
its document. A fetched page or a long log reads on from the tool message,
with no re-fetch and no re-run.
The run_argv_batch run budget stays as an execution guard: it stops a
runaway batch from spawning further huge-output steps.
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
Pins the parameter arithmetic on a few shapes (shift, alt, ctrl, shift+ctrl,
ctrl+alt), the Alt-without-a-CSI-form case, Ctrl+Space as NUL, and the three
combinations that stay errors (`<s-a>`, `<c-tab>`, `<c-s-tab>`).
Pins the markers that used to be unreachable (s-tab, home, bs, pgup, f5, a
repeat, a literal `<`), the two shapes of a wrong marker (unknown name, bad
repeat) coming back as an error from the tool instead of being typed, and the
pretty line naming the keys it sent.
Prompt the human (optional no-echo secret) and write only to the PTY.
Tool results never include the answer so secrets stay off external APIs.
Empty/Ctrl-C cancel without writing; submit defaults to trailing newline.
NCBM