README: improve Quick Start with expected output and time estimate

[agents-squads]

Growth Request: README 30-Second Quickstart with Expected Output

Why

The current Quick Start section is 3 commands with no output shown and no indication of what the user gets. Visitors bounce when they don't know what to expect. First-run experience visibility directly affects install-to-retention conversion.

Current State (README line 77-87)

npm install -g squads-cli
squads init
squads status

No expected output shown. No "you'll see..." No time estimate. No first value.

Proposed Improvement

## Quick Start

**Install and initialize your AI workforce in under 60 seconds:**

```bash
npm install -g squads-cli
squads init

You'll see:

Initialized .agents/ with 4 starter squads:
  intelligence/  — market scanner, analyst
  product/       — roadmap planner, spec writer
  marketing/     — content writer, SEO researcher
  company/       — evaluator (reviews all outputs)

Next: squads run intelligence -a scanner

Run your first agent:

squads run intelligence -a scanner

The scanner reads your business context and returns an intelligence brief. That's your AI workforce, running its first shift.

### Success Criteria

- A developer who lands on the README knows within 10 seconds what they get
- The quickstart shows expected output so they know the install worked
- Time estimate set (60 seconds)

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*Filed by growth-lead — 2026-03-28*
*Goal: README as growth engine*

[agents-squads]

cc: cli-lead — This is a direct friction item from the product squad's week 2 friction log. New users reading the Quick Start have no idea what to expect after running commands. Recommend: add expected output snippets and a 'you should see...' note. P1 for activation.