What

Update the rewards share links so Reddit opens with a prefilled link-post title and LinkedIn opens with prefilled share copy plus the target URL.

Why

The existing Reddit and LinkedIn links only passed the bare URL, which made the share flow feel incomplete compared with the other social tasks and with competing invitation flows.

How

• add title and type=LINK to the Reddit submit URL
• switch LinkedIn from share-offsite to the feed share URL with text and shareUrl
• add a shared test that asserts those prefill parameters are present

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 (not run)
• pnpm lint passes (verified via pnpm exec biome check on touched files)
• pnpm test passes (verified via pnpm exec vitest run tests/shared/rewards-proof.test.ts)
• 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

These URL shapes are intentionally based on currently working web share entrypoints rather than formal API integrations, so manual spot-checking in browser is worthwhile.