Updates to openclaw, openclaw-container, Molten Bot, molten.bot.

Bumped the OpenClaw repository version marker to 2026.4.9 for the coordinated runtime release cadence.

Aligned container-pinned OpenClaw version metadata to 2026.4.9 so container/runtime bundles stay in sync.

Fixed rotated-token copy interactions and related API/test coverage so key-copy actions stay clickable and deterministic.

Launched a richer /code page with product screenshots, runtime walkthrough content, and copy-friendly container command examples.

Polished the 404 experience and removed transient prompt-image artifacts to keep website assets cleaner.