What

Fix the Rewards X share template so the full share copy and GitHub repo URL are preserved when opening the X composer.

Why

Closes #967.

The previous X share URL put both the marketing copy and the repo link into the text query param. In practice this caused the compose content to truncate after Slack and the GitHub link to disappear.

How

• keep the shared marketing copy as the X text payload
• pass the GitHub repo as the dedicated X url query param
• update the shared rewards template test to assert the split text / url behavior
• leave WhatsApp and other share templates unchanged

Affected areas

• Desktop app (Electron shell)
• Controller (backend / API)
• Web dashboard (React UI)
• OpenClaw runtime
• Skills
• Shared schemas / packages
• Build / CI / Tooling

Checklist

• pnpm typecheck passes
• pnpm lint passes
• pnpm test passes
• pnpm generate-types run (if API routes/schemas changed)
• No credentials or tokens in code or logs
• No any types introduced (use unknown with narrowing)

Notes for reviewers

Manual verification in the web rewards flow confirms the X composer now keeps the full share copy and includes the GitHub URL / preview card.