typing `-` (hyphen) while holding option (⌥) key ≈ escape key semantics, irreversibly throws away whatever you've typed without warning

**Bug Description**

`⌥` + `-` (option+hyphen, the human em-dash) has the same semantics as the escape key: it backs out of any active questionnaire, irreversibly destroying your responses to Claude's clarifying questions.

The amount of times I've irreversibly lost **paragraphs** of context to this behavior is deeply troubling. I suspect the number of people using option-hyphen as the escape key are zero. : )

**Environment Info**
- Platform: darwin
- Terminal: Apple_Terminal
- Version: 2.1.220
- Feedback ID: 583b4765-f9eb-483a-a06f-7e7a54ab462f

Start by locating the terminal questionnaire input handling and the key mapping for Option-hyphen and Escape. Reproduce the behavior on macOS using Apple Terminal, then verify that typing Option-hyphen no longer discards active questionnaire responses while Escape retains its existing behavior.

Written by the indexing model from the issue text.