[Bug]: Alt+D keystroke intercepted - does nothing instead of delete-word-forward

[dsemke]

What happened?

The Auggie TUI intercepts the Alt+D keystroke. Outside of Auggie, Alt+D deletes the word forward (standard terminal behavior in zsh/bash). Inside the Auggie TUI, pressing Alt+D does nothing — the keystroke is captured but no action is performed.

What did you expect to happen?

Alt+D should delete the word forward, consistent with standard readline/terminal behavior.

Steps to reproduce

1. Start Auggie in a terminal: auggie
2. Type some text in the input area, e.g., hello world test
3. Position cursor after "hello" (before "world")
4. Press Alt+D
5. Observe: nothing happens (expected: "world" should be deleted)

Auggie version

0.12.0 (commit caae5f40)

Request ID

54bc7f55-68ae-45e7-bc9b-06225e3adf5a

Environment details

• OS: macOS Darwin 25.1.0 (arm64)
• Shell: /bin/zsh
• Node.js: v25.2.1
• npm: 11.6.2

Anything else we need to know?

Other Alt/Ctrl key combinations tested work correctly:

• Alt+B (word back) ✅ works
• Alt+F (word forward) ✅ works
• Ctrl+D (delete char / EOF) ✅ works

Alt+D (delete word forward) does not work — it may be bound to an unimplemented or empty handler in the TUI. Other keystroke combinations have not been tested.