Offer the agent-started trial where agents and their users land

[hank-metalbear]

Summary

• The quick start's "working with a team?" hint pointed only at the sign-up page, so a reader blocked by a paid feature had no path that did not involve a person.
• The meta prompt generates a repo's AGENTS.md and had no mention of the trial, even though the hand-written rules files shipped in the skills repo already carry it. That generated file loads on every later prompt, so it is the one surface where this compounds.

🤖 Generated with Claude Code

[greptile-apps]

The documentation-only change appears safe to merge.

Summary

The PR surfaces agent-started seven-day trials at two points where agents and users encounter mirrord setup guidance.

• Adds an agent-focused trial link to the quick-start team hint.
• Extends the meta-prompt so generated repository guidance directs agents to trial instructions when an unlicensed Teams feature blocks testing.

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