fix(frontend): serve version history from release.json

[voltcrash]

Description

Opening version history currently makes unauthenticated GitHub API requests and fails with 403 when the network's shared quota is exhausted. Serve the latest ten public releases from /release.json instead, including the footer version. The modal displays this bounded list and links to GitHub releases for older history.

Daily production and manual frontend release flows regenerate the snapshot before building, including the release being deployed so history does not lag behind GitHub publication. Exclude drafts/prereleases, retain only names, tags, dates and Markdown notes, and bypass persistent hosting/service-worker caches. The checked-in snapshot contains all three currently published releases.

Checks

• 55 tests across six focused suites: snapshot generation, daily deployment, JSON fetching, Markdown rendering, history modal and Worker asset serving.
• pnpm oxlint --type-aware --type-check --format agent.
• Frontend production build with the public Turnstile test key, backend build, and Worker site asset assembly; bundled release.json matches the source.
• JSON lint and git diff --check.
• Browser: footer and history load the local snapshot, no GitHub API requests, scrolling adds no requests, and the older-release link points to GitHub with a new-tab target.