/promote

Promote staging to production (merge develop → main)

# Promote Command

Promote verified staging changes to production environment.

## Usage


## What This Does

1. **Verify staging is healthy**
   - Check Railway staging deployment status
   - Review recent staging logs

2. **Compare branches**
   - Show commits in develop not in main
   - List changed files

3. **Create promotion**
   - Option A: Create PR (develop → main)
   - Option B: Direct merge (if configured)

4. **Tag release** (if --tag provided)
   - Create annotated git tag
   - Push tag to origin

5. **Monitor production deployment**
   - Watch Railway logs
   - Verify health c...