+++
title = "nbd init command"
priority = 7
status = "done"
ticket_type = "feature"
dependencies = []
+++
Add an explicit `nbd init` subcommand that creates `.nbd/tickets/` in the current working directory, analogous to `git init`.

## Motivation

Currently users must run `mkdir -p .nbd/tickets` manually before first use. This is a friction point — especially for first-time users and agent workflows bootstrapping a new project.

## Approach

1. Add `Init` variant to the `Commands` enum in `main.rs`.
2. Implement `cmd_init(json: bool) -> store::Result<()>`:
   - Get cwd via `std::env::current_dir()`.
   - Call `store::ensure_tickets_dir(&cwd)` (already exists, idempotent).
   - Print confirmation: `initialised .nbd/tickets/ in <path>` (or JSON: `{"root": "<path>"}`).
3. No changes to `store.rs` needed — `ensure_tickets_dir` already uses `create_dir_all` (idempotent).
4. The command should NOT require `.nbd/` to already exist (i.e. do NOT call `find_nbd_root` here — use cwd directly).

## Tests

- Integration test: run `nbd init` in a fresh tempdir, verify `.nbd/tickets/` is created.
- Integration test: run `nbd init` twice in the same dir — succeeds both times (idempotent).
- Integration test: `nbd init --json` outputs valid JSON with a `root` field.

## Files touched
- `src/main.rs` — new `Init` variant and `cmd_init` handler
- `tests/integration.rs` — new integration tests
- `README.md` — update Initialise section