/work

Pick an issue and work it to completion

# Work Command

Work a single issue to completion.

## Usage



If no issue-id provided, pick from `tissue ready`.

## Phase 1: Select Issue

1. If issue-id provided, use it. Otherwise:
   - Run `tissue ready` to see unblocked issues
   - If **no issues available**: Report "No ready issues" and stop
   - Pick the highest priority (P1 > P2 > P3 > P4 > P5)
2. Run `tissue show <issue-id>` to read details
3. Run `tissue status <issue-id> in_progress` to claim it

## Phase 2: Implement

1. **Understand** requirements before coding
2. **Explore** existing patterns
3. **Implement** following proje...