Version bumps, icon refresh, and reliability fixes.

Bumped `OPENCLAW_VERSION` twice to track the latest OpenClaw runtime revision.

Updated `src/OPENCLAW_VERSION` so container builds stay aligned with the latest OpenClaw runtime.

Preserved changed-repo context in harness failure results and removed the deprecated PR format-reference line from normalized PR bodies.

Migrated UI iconography to Lucide-backed provider/channel icons and updated dependent component tests.

Optimized CI/deploy workflow behavior for faster feedback and refreshed Docker/README assets for Cloudflare Pages deploys.

Published the 2026-04-21 UTC release rollup in `src/data/releases.json`.

Added optional release/knowledge-base meta descriptions and wired release detail pages to prefer explicit `metaDescription` values.