docs: join kit on the landing

[DealAppSeo]

Summary

docs/JOIN_KIT.md and the landing box list the same five lines: install @hyperdag/trustshell@1.4.0, trustshell verify, trustshell status, trustshell repid, and trustshell proof --verify.

The box does not ask for a wallet and does not link to /start/tailor.

[strix-security]

Strix Security Review

No security issues found.

Review summary

Reviewed all four changed files. The PR adds a static "Join kit" documentation box to the landing page, a matching Markdown doc, and a test that verifies both list the same five CLI commands. The joining component renders a hardcoded string constant through React's auto-escaped text output, with no user-controlled input, no dangerous sinks (no dangerouslySetInnerHTML, eval, SQL/command execution, file or URL handling), no secrets, and no auth or authorization changes. No security-relevant issues were identified in the diff.

_{Updated for 3e0f548.}

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Reviewed by Strix
_{Re-run review · Configure security review settings}

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Project	Deployment	Actions	Updated
trustshell-landing	Ready	Preview	Sep 25, 2026 11:58pm UTC

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[strix-security]

Reviewed all four changed files. The PR adds a static "Join kit" documentation box to the landing page, a matching Markdown doc, and a test that verifies both list the same five CLI commands. The joining component renders a hardcoded string constant through React's auto-escaped text output, with no user-controlled input, no dangerous sinks (no dangerouslySetInnerHTML, eval, SQL/command execution, file or URL handling), no secrets, and no auth or authorization changes. No security-relevant issues were identified in the diff.

---

Reviewed by Strix
_{Configure security review settings}