Adds three new org-agenda-custom-commands:
- "i" for Inbox tasks (INBOX state)
- "n" for Next tasks (NEXT state)
- "w" for Waiting tasks (WAIT state)
These were previously only available as part of the composite "M" view.
Now they're exposed as standalone views for the org-agenda-api.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>