docs: fix agent-team uninstall label list and drop stale version ref

[github-actions]

What

Two small documentation errors found during a post-commit docs audit:

1. Wrong label in README.md uninstall instructions

The uninstall section listed state:in-progress as one of the seven agent-team labels to delete. That label is never created by the install skill — it doesn't exist. The label that is created (and was missing from the uninstall list) is agent-team:reviewed, which the reviewer applies to approved PRs.

Before:

...plus `gh label delete state:<name>` for each of `plan-needed`, `impl-needed`, `review-needed`, `done`, `blocked`, and `in-progress`.
```

After (matches the seven labels in `skills/install-agent-team/SKILL.md` and `catalog/agent-team/README.md`):
```
`gh label delete agent-team:reviewed`, plus `gh label delete state:<name>` for each of `plan-needed`, `impl-needed`, `review-needed`, `done`, and `blocked`.

2. Stale version qualifier in SKILL.md

skills/install-agent-team/SKILL.md had an ## Out of scope for v0.1 heading. The repo is at v0.2.1; the qualifier is no longer meaningful. Changed to ## Out of scope.

Why now

The latest commit (d688265) hardened the agent-team dispatch pipeline. A docs sweep of the agent-team surface area turned up both errors.

Test plan

• Verify the seven labels in README.md uninstall section match those in skills/install-agent-team/SKILL.md (the gh label create commands) and catalog/agent-team/README.md (the prerequisites list)
• Confirm state:in-progress does not appear anywhere in the codebase as a created label (grep -r "label create.*in-progress" .)
• Confirm agent-team:reviewed appears in reviewer-agent.md safe-outputs and SKILL.md label create commands

🤖 Generated with [Claude Code]((claude.ai/redacted)

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