[FEATURE] Allow binding keys in "Resume Session" context

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

On the /resume screen, there are various hotkeys: Ctrl+A to show all projects, Ctrl+W to show all worktrees, etc. I don't believe there's a way to rebind these via /keybindings (the schema doesn't seem to list a "Resume" context, those key commands don't appear anywhere in keybindings.json, etc). I use many of those hotkeys for other things (i.e. Ctrl+W to close the terminal tab), making them unusable. Please allow these to be changed via /keybindings.

Proposed Solution

Described above

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_