docs(coder): point runbook §0 at the PTY harness

docs(coder): point runbook §0 at the PTY harness

§0 forbids closing an interactive-TUI issue on headless evidence but did not
say what satisfies it. Name the harness, and state that the completion gate
reaches neither it nor `cargo fmt` for this crate (#124), so it is run by
hand.

Refs #116
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K7q2vA5LJroLTR6ZFbRq6j

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K7q2vA5LJroLTR6ZFbRq6j

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Changed files

modified docs/coder/runbook.md

Diff

1 file changed, +7 -0

the completion gate is `pnpm run check`; docs-only changes push with
`--no-verify` after the docs checks.

A change to the coder-lite TUI has one more step, because `pnpm run check`
does not reach it. `cargo test -p coder-lite --test interactive_pty` drives
the real binary on a pseudo-terminal and asserts on the rendered cells; it is
what "headless evidence does not close a TUI issue" now points at. The
completion gate runs neither it nor `cargo fmt` for this crate (#124), so run
it by hand and say in the issue that you did.

## 1. Prerequisites

- **Docker with amd64 emulation that works.** Terminal-Bench images are

32	32		the completion gate is `pnpm run check`; docs-only changes push with
33	33		`--no-verify` after the docs checks.
34	34
	35	+	A change to the coder-lite TUI has one more step, because `pnpm run check`
	36	+	does not reach it. `cargo test -p coder-lite --test interactive_pty` drives
	37	+	`the real binary on a pseudo-terminal and asserts on the rendered cells; it is`
	38	+	`what "headless evidence does not close a TUI issue" now points at. The`
	39	+	completion gate runs neither it nor `cargo fmt` for this crate (#124), so run
	40	+	`it by hand and say in the issue that you did.`
	41	+
35	42		`## 1. Prerequisites`
36	43
37	44		`- Docker with amd64 emulation that works. Terminal-Bench images are`