feat: rebrand portal from <GET A JOB> to <hype>

[ivorycrayon]

What

Renames the guild portal brand from <GET A JOB> to <hype> across every surface:

• Page titles, meta/OG/Twitter tags, in-page copy, home-links, privacy policy, and rules
• Hub and TBC guide regenerated from their source generators (CI --check passes)
• Backend delivery strings: Discord post author, raid-application email subject and footer, API title, unit description

URLs, repo path, service names, and asset filenames are unchanged.

Why

The name change is the first phase of the rebrand. Art and asset renames follow separately so this PR has no deploy dependency beyond a normal deploy pull for the static surfaces.

[ivorycrayon]

Reviewed: pure brand-string rename across static + generated + backend surfaces, no logic change. Leak grep clean (no homelab specifics in diff or messages). CI green — hub and TBC --check both pass. Self-authored, so this is a review note rather than a formal approval. Squash-merging.

Note for deploy: the static surfaces update on the next deploy pull; the server/ strings (Discord/email) need a manual backend redeploy to take effect.