feat: generate dynamic og image for status page (#370)

* feat: generate dynamic og image for status page

* fix: restore real data fetch and clean up og image

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: handle 0% uptime days as real data and remove dead degraded branch

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mezotv