feat: add Hermes landing page

[Skeyelab]

Summary

• Adds /hermes landing page for Hermes agent webhook relay workflows
• Adds a low-key /hermes entry point from the main landing copy
• Covers the route, copy, CTAs, setup snippet, and delivery path with landing tests

Test plan

• yarn lint
• yarn test:run
• DATABASE_URL=postgresql://user:pass@localhost:5432/clawproxy ENCRYPTION_KEY=0000000000000000000000000000000000000000000000000000000000000000 yarn build

[strix-security]

Strix Security Review

Warning

This pull request has 5 commits after the last Strix review (658e598). Strix has not reviewed these changes.
Automatic review on push is off for this repository. To review the latest changes, tag @strix-security in a comment, or turn on re-review on push.

No security issues found.

Review summary

Reviewed the Hermes landing page addition. The change introduces a static app/hermes/page.tsx landing page, a static Link on the home page, and two landing-copy test files. All added content is hardcoded and presentational: no user-controlled input reaches any sink, no authentication or authorization logic is added or altered, no secrets are committed (the cpn_your_node_token value is a placeholder in a setup example, not a real credential), and no redirect, injection, XSS, or SSRF surface exists. No security issues were found in the changed code.

_{Updated for 658e598.}

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Reviewed by Strix
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