/demo

Execute demo of the most recently completed phase using cata-tester agent

# Execute Phase Demo

Run the demonstration for the most recently completed phase of: **$ARGUMENTS**

This command launches the `cata-tester` agent to execute the demo with strict no-fix testing philosophy.

## Process

### Step 1: Locate Task File

Find the tasks.md file:
- If given a path, use that directly
- If given a feature name, search `docs/design/*/tasks.md`
- Use the most recent task file for that feature

### Step 2: Identify Last Completed Phase

Analyze the tasks.md to find:
- The highest numbered phase with ALL tasks marked as `[x]`
- The phase checkpoint must also be fully ma...