I lost my ability to select up and down in the session selector because
of some hardcoded keybindings again... So, I am adding these
configurable keybindings so I can `ctrl+p` to select up :-)
### Changes
Adds 4 new keybinding actions for the session picker (/resume):
- `toggleSessionPath` (ctrl+p) - toggle path display
- `toggleSessionSort` (ctrl+r) - toggle sort mode
- `deleteSession` (ctrl+d) - delete selected session
- `deleteSessionNoninvasive` (ctrl+backspace) - delete when query empty
Refactors session-selector to use `kb.matches()` instead of hardcoded key checks.
The problem: I wanted to be able to select my session (either from
`/resume` or `--resume`) with different keybindings.
The issue: when running `pi --resume`, custom keybindings from
`~/.pi/agent/keybindings.json` were not being applied to the session
picker. This happened because `KeybindingsManager.create()` was only
called when `InteractiveMode` initialized, but the session picker runs
before that in `main.ts`.
The session picker uses `getEditorKeybindings()` for navigation
(selectUp/selectDown etc.), which returns the global default keybindings
if `setEditorKeybindings()` hasn't been called yet.
Fix: Call `KeybindingsManager.create()` inside the `--resume` block
before showing the session picker. This loads user keybindings and sets
them globally.
The current fix results in double-init of keybindings when entering
interactive mode which _should_ be harmless, since it's the same same
config loaded twice, but is minimal and only affects the `--resume`
path.
I considered passing keybindings from `main()` to `InteractiveMode` -
it's cleaner but requires API changes.
Also documented the `select*` keybindings in README.md.